Panel 11 FD Agenda Page 1 - NFPA · A Public Input No. 4358‐NFPA 70‐2014 430.109(F) 11 none...

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471

Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

AGENDA

NEC Code-Making Panel 11

First Draft Meeting

January 15-17, 2015

Hilton Head, SC

Item No. Subject

15-1 -1 Call to Order

15-1-2 Introduction of Members and Guests

15-1-3 Approval of A2013 ROC Meeting Minutes

15-1-4 Review of Meeting Procedures and Revision Schedule

15-1-5 Comments/Questions from Committee Members

15-1-6 Task Group Reports

15-1-7 Processing of Public Inputs

15-1-8 Fire Protection Research Foundation Requests

15-1-9 Old Business

15-1-10 New Business

15-1-11 Adjournment

Panel 11 FD Agenda

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

NEC Code-Making Panel 11 ROC Meeting Minutes 1. List date(s) and location of meeting:

12/6-8, 2012, Crowne Plaza Resort, Redondo Beach, CA

2. List names of guests in attendance: See Attachment.

3. List names of guests addressing the Panel, the subject of their address, and the length of time they spoke:

Mr. Michael Weitzel, Bechtel, IEC Comments 11-12 and 11-17 5 minutes

4. Number of Proposals or Comments acted upon: 41 5. Number of Panel Generated Proposals or Comments:

2 6. Appointments of any Task Groups that will be working on any Panel subject, subsequent to the Panel Meeting, along with the names of members of the Task Group(s):

None 7. List any request contained in a Panel Statement that requires Technical Correlating Committee attention:

None

9. List any Proposals or Comments that should be referred to the Toxicity Advisory Committee: N/A 10. List any Proposals or Comments that should be referred to the Environmental Advisory Committee: N/A 11. List all Proposals or Comments related to combustibles in plenums or other air handling spaces: N/A 12. List any general Panel requests for information or assistance from the Technical Correlating Committee: N/A 13. List any additional information that you feel would be helpful to the Technical Correlating Committee, staff, or to the process in general: The proposals to include voltages of 1000V may require the TCC to ensure consistency within the Code. There is some confusion over this issue. However, overall CMP 11 members understand and support this increase. The Comments are: 11-6 11-11 11-19 11-23 11-35 11-36 11-37

Panel 11 FD Agenda

Panel 11 ‐ 109 PI's

Inclu

de

Title Section

Panel

A Public Input No.334 Global Input 11A Public Input No.333 Global Input 11

none Public Input No. 1377 Physical Damage allnone Public Input No. 1975 Actual volts allnone Public Input No. 3478 various global editorial allnone Public Input No. 3681 60 V DC allnone Public Input No.4329 All Definitions allA Public Input No. 1902 Nominal all

none Public Input No. 3703 100, Rated‐Load Current. 11

none Public Input No.2364 409.1 11none Public Input No.1584 409.3 11none Public Input No.2611 409.6 11none Public Input No.2255 409.11 11none Public Input No.1581 409.11 11none Public Input No. 4293‐NFPA 70‐2014 409.11 11none Public Input No.630 409.22 11none Public Input No.1152 Section after 409.22 11none Public Input No. 4733‐NFPA 70‐2014 Section after 409.22 11none Public Input No. 4421‐NFPA 70‐2014 Section after 409.22 11none Public Input No.3944 Section after 409.30 11none Public Input No.2612 409.108 11none Public Input No. 1583 409.111‐New 11

none Public Input No.3048 410.1 11

none Public Input No.3436 430.1 11A Public Input No.1818 430.1 11

Panel 11 FD Agenda Page 5


none Public Input No.487 430.4 11none Public Input No.488 430.6(A)(1) 11none Public Input No.2906 430.6(A)(1) 11none Public Input No.2057 430.8 11none Public Input No. 4291‐NFPA 70‐2014 430.10(B) 11A Public Input No. 4292‐NFPA 70‐2014 430.12 11

none Public Input No.2639 430.12(A) 11none Public Input No.2640 430.12(E) 11none Public Input No.489 430.22(F) 11none Public Input No.1357 430.22(G) 11A Public Input No. 4295‐NFPA 70‐2014 430.22(G) 11

none Public Input No.710 430.26 11none Public Input No.2261 430.26 11none Public Input No. 4296‐NFPA 70‐2014 430.28 11none Public Input No.1354 430.53(D) 11none Public Input No.1355 Section after 430.53(D) 11none Public Input No. 4299‐NFPA 70‐2014 430.72(B)(2) 11none Public Input No.1585 430.72(C)(4) 11none Public Input No.2927 430.81(A) 11none Public Input No.2058 430.83(C) 11none Public Input No.3430 430.87 11none Public Input No.1189 430.92 11none Public Input No. 4714‐NFPA 70‐2014 Section after 430.92 11none Public Input No.2643 430.95, 430.96 11none Public Input No. 4302‐NFPA 70‐2014 430.97(D), 430.97(E) 11none Public Input No.155 Section after 430.98 11none Public Input No. 4437‐NFPA 70‐2014 Section after 430.98 11none Public Input No. 4712‐NFPA 70‐2014 430.98(A) 11none Public Input No.4440 430.100 11none Public Input No.1734 430.102(B)(2) 11none Public Input No.2254 Section after 430.102(B)(2) 11none Public Input No.2759 430.103 11none Public Input No.2795 430.109(B) 11none Public Input No.2051 430.109(C) 11



CI Public Input No. 4675‐NFPA 70‐2014 430.109(F) 11CI Public Input No. 4654‐NFPA 70‐2014 430.109(F) 11CI Public Input No. 4630‐NFPA 70‐2014 430.109(F) 11A Public Input No. 4449‐NFPA 70‐2014 430.109(F) 11A Public Input No. 4402‐NFPA 70‐2014 430.109(F) 11A Public Input No. 4358‐NFPA 70‐2014 430.109(F) 11

none Public Input No.2052 430.113 11none Public Input No. 4325‐NFPA 70‐2014 430.128, 430.130 11none Public Input No.1356 Section after 430.130(A) 11none Public Input No.1210 430.231 11none Public Input No.2053 430.232 11none Public Input No.2054 430.233 11none Public Input No. 2644 430, Part XIII. 11none Public Input No.2646 430.241, 430.242, 430.243, 430.244 11none Public Input No.2055 430.242 11none Public Input No.2056 430.243 11none Public Input No.2675 430.245 11none Public Input No. 2059 Table 430.247 11none Public Input No. 3328 Table 430.247 11A Public Input No. 3328 Table 430.247 11NR Public Input No.666 Table 430.247 11none Public Input No.545 Table 430.247 11

none Public Input No. 4728‐NFPA 70‐2014 440.4(B) 11none Public Input No. 4446‐NFPA 70‐2014 440.4(B) 11none Public Input No.836 Section after 440.8 11none Public Input No.1800 Section after 440.8 11none Public Input No.1325 Section after 440.8 11none Public Input No. 4729‐NFPA 70‐2014 Section after 440.8 11none Public Input No. 4312‐NFPA 70‐2014 Section after 440.8 11none Public Input No. 4432‐NFPA 70‐2014 Section after 440.11 11none Public Input No.3351 440.12(A)(1) 11none Public Input No.4109 440.14 11

Public Input No.20‐NFPA 70‐2013 440.14 11



A Public Input No.2667 Section after 440.14 11none Public Input No.2724 440.22(A) 11none Public Input No.2725 440.22(B) 11none Public Input No.1873 440.32 11none Public Input No.1012 440.33 11none Public Input No. 4697‐NFPA 70‐2014 Section after 440.41 11none Public Input No.2676 440.61 11none Public Input No.1195 440.65 11

none Public Input No. 3172 460, Part I. 11none Public Input No. 3174 460, Part II. 11none Public Input No.2679 460.1 11none Public Input No. 4307‐NFPA 70‐2014 440.6 11none Public Input No.2680 460.27 11none Public Input No.2063 460.28(A) 11

none Public Input No. 3178 470, Part l. 11none Public Input No. 3179 470, Part II. 11none Public Input No.2681 470.19 11


Public Input No. 334-NFPA 70-2014 [ Global Input ]

NOTE: The following Public Input appeared as Rejected but held (Hold) in PublicComment No. 11-20 (Log #601) of the A2013 Second Draft Report (ROC) for NFPA70 and per the Regs. at 4.4.8.3.1.

Additional Proposed Changes

File Name Description Approved

11-20.pdf 11-20 ✓

11-20.pdf P11-20 ✓

Statement of Problem and Substantiation for Public Input

See the Uploaded File for Recommendation text.

Substantiation: This is the only instance in the NEC that the term expert is used.

Submitter Information Verification

Submitter Full Name: NEC on CMP11

Organization: NEC on CMP11

Street Address:

City:

State:

Zip:

Submittal Date: Wed Feb 26 13:29:44 EST 2014

Copyright Assignment

I, NEC on CMP11, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights incopyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). Iunderstand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which thisPublic Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that Ihave full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am NEC on CMP11, and I agree to be legally bound by the above Copyright Assignmentand the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronicsignature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/C...

1 of 1 11/24/2014 10:54 AM


Report on Comments – June 2013 NFPA 70_______________________________________________________________________________________________11-20 Log #601 NEC-P11 Final Action: Hold(430.111(B)(3))_______________________________________________________________________________________________Submitter: James F. Williams, Fairmont, WVComment on Proposal No: 11-20Recommendation: Revise text to read as follows: 430.111 Switch or Circuit Breaker as Both Controller and Disconnecting Means(B) Type.(3) Oil Switch. An oil switch used on a circuit whose rating does not exceed 1000 volts or 100 amperes, or by specialpermission on a circuit exceeding this capacity where under expert engineering supervision. The oil switch shall bepermitted to be both power and manually operable.-or-430.111 Switch or Circuit Breaker as Both Controller and Disconnecting Means(B) Type.(3) Oil Switch. An oil switch used on a circuit whose rating does not exceed 1000 volts or 100 amperes, or by specialpermission on a circuit exceeding this capacity where under expert supervision. in industrial installations whereconditions of maintenance and supervision ensure that only qualified persons service the equipment. The oil switch shallbe permitted to be both power and manually operable.Substantiation: This is the only instance in the NEC that the term expert is used.

Panel Meeting Action: HoldPanel Statement: The comment and proposed change is not related to the original proposal. It is new material.Number Eligible to Vote: 14Ballot Results: Affirmative: 14

063600L084136Y0520120

1 Printed on 2/26/2014


Report on Proposals – June 2013 NFPA 70_______________________________________________________________________________________________11-20 Log #1033 NEC-P11 Final Action: Accept in Principle in Part(430, Parts I through X)_______________________________________________________________________________________________Submitter: James T. Dollard, Jr., IBEW Local Union 98Recommendation: Replace 600V with 1000V.Substantiation: This proposal is the work of the “High Voltage Task Group” appointed by the Technical CorrelatingCommittee. The task group consisted of the following members: Alan Peterson, Paul Barnhart, Lanny Floyd, AlanManche, Donny Cook, Vince Saporita, Roger McDaniel, Stan Folz, Eddie Guidry, Tom Adams, Jim Rogers and JimDollard. The Task Group identified the demand for increasing voltage levels used in wind generation and photovoltaic systemsas an area for consideration to enhance existing NEC requirements to address these new common voltage levels. Thetask group recognized that general requirements in Chapters 1 through 4 need to be modified before identifying andgenerating proposals to articles such as 690 specific for PV systems. These systems have moved above 600V and arereaching 1000V due to standard configurations and increases in efficiency and performance. The committee reviewedChapters 1 through 8 and identified areas where the task group agreed that the increase in voltage was of minimal or noimpact to the system installation. Additionally, there were requirements that would have had a serious impact and thetask group chose not to submit a proposal for changing the voltage. See table (supporting material) that summarizes allsections considered by the TG. Note: Supporting material is available for review at NFPA Headquarters.Panel Meeting Action: Accept in Principle in Part.Panel Statement: The panel concludes that Article 430 needs to be reviewed and modified and is requesting inputregarding proper spacing at the comment phase. The panel accepts changing 600v to 1000v everywhere in Article 430 except in the tables in 430.97 where the panel concludes that additional changes need to be investigated. The panel has appointed a task group to review this issueand report back at the ROC and to submit any necessary comments.Number Eligible to Vote: 14Ballot Results: Affirmative: 14

052996A0122787052011T




NOTE: The following Public Input appeared as Rejected but held (Hold) in PublicComment No. 11-13 (Log #1327) of the A2013 Second Draft Report (ROC) forNFPA 70 and per the Regs. at 4.4.8.3.1.



11-13.pdf 11-13 ✓

11-20.pdf P11-20 ✓


See the Uploaded File for the Recommendation text.

Substantiation: Voltage gap in table.


Submitter Full Name: NEC on CMP11

Organization: NEC on CMP11

Street Address:

City:

State:

Zip:

Submittal Date: Wed Feb 26 13:28:30 EST 2014


I, NEC on CMP11, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights incopyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). Iunderstand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which thisPublic Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that Ihave full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am NEC on CMP11, and I agree to be legally bound by the above Copyright Assignmentand the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronicsignature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/C...

1 of 1 11/24/2014 10:59 AM


Report on Comments – June 2013 NFPA 70_______________________________________________________________________________________________11-13 Log #1327 NEC-P11 Final Action: Hold (Table 430.12(C)(1))_______________________________________________________________________________________________Submitter: James F. Williams, Fairmont, WVComment on Proposal No: 11-20Recommendation: Revise text to read as follows: Change “240 or less” to “250 or less”Substantiation: Voltage gap in table.Panel Meeting Action: HoldPanel Statement: Proposal 11-20 does not address the issue raised by the submitter. It is new material.Number Eligible to Vote: 14 Ballot Results: Affirmative: 14

064344M13122041720129




Change "physical damage" to "mechanical damage"


The term "physical damage" is often a source of confusion. One of the points of confusion is what is included in "physical damage"; for example, is exposure to corrosive gas included? I believe other language in the code covers that type of situation, and "mechanical damage" more clearly reflects the intent of the requirements in the NEC that currently refer to "physical damage".


Submitter Full Name: Christel HunterOrganization: General CableStreet Address:City:State:Zip: Submittal Date: Mon Sep 22 20:02:13 EDT 2014


I, Christel Hunter, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am Christel Hunter, and I agree to be legally bound by the above Copyright Assignment and the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature

Page 1 of 1National Fire Protection Association Report

11/20/2014http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/70-2014....



Search for Replace with50 volts 50 actual volts50 Volts 50 Actual Volts50-volts 50-actual-volts50-Volts 50-Actual-Volts

Search for Replace with150 volts 150 actual volts150 Volts 150 Actual Volts150-volts 150-actual-volts150-Volts 150-Actual-Volts

Search for Replace with300 volts 300 actual volts300 Volts 300 Actual Volts300-volts 300-actual-volts300-Volts 300-Actual Volts

Search for Replace with2000 volts 2000 actual volts2000 Volts 2000 Actual Volts



Search for Replace with35,000 volts 35,000 actual volts35,000 Volts 35,000 Actual Volts35,000 V 35,000 Actual VThese search and replace operations will pick up all references to the listed voltages, alll of which are actual rather than nominal values.


This section uses voltages that are "actual" hard limits.Refer to the substantiation for 1902 for more information.

Related Public Inputs for This Document




Related Input RelationshipPublic Input No. 1902-NFPA 70-2014 [Global Input]

This submission depends on 1902


Submitter Full Name: JAMES WILLIAMSOrganization: noneAffilliation: Retired Master ElectricianStreet Address: City: State:Zip: Submittal Date: Wed Oct 15 19:51:34 EDT 2014


I, JAMES WILLIAMS, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am JAMES WILLIAMS, and I agree to be legally bound by the above Copyright Assignment and the terms and conditions contained therein. I understand and intend that, by checking thisbox, I am creating an electronic signature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature





for "provided that the" read "if the"for "provided that it" read "if it"for "provided that all" read "if all"for "provided that such" read "if the"


NEC_StyleManual_2011.pdf: 3.3.4 Word Clarity. Words and terms used in the NEC shall be specific and clear in meaning, and shall avoid jargon, trade terminology, industry-specific terms, or colloquial language that is difficult to understand. NEC language shall be brief, clear, and emphatic. The following are examples of old-fashioned expressions and word uses that shall not be permitted: "provided that"


Submitter Full Name: JAMES WILLIAMSOrganization: noneAffilliation: Retired Master ElectricianStreet Address: City: State:Zip: Submittal Date: Tue Nov 04 10:33:19 EST 2014








Change the use of the phrase "60 V DC" to "Nominal 50V DC" throughout the NFPA 70 Standard.


The NEC is conflicted in its use of the terminology which defines the DC voltage level on when certain code rules apply. It would appear that half of the NEC code sections refer to 60V dc as the voltage limit which mandates certain code requirements. And it would appear the other half refers to "50V DC". The code should be consistent in its approach. This public input seeks to resolve this conflict and come up with consistent terminology throughout the code.

In 110.26(A)(1)(b) working space requirements are for 60V DC.250.162 refers to 60V DC for grounding requirements for DC systems.393.6 refers to listing requirements for certain DC equipment at 60V.620.5(D) refers to elevator requirements for uninsulated parts at no more than 60V DC.Article 640 and 647 have similar DC voltage limits.

For the 50 volt level guarding of live parts in 110.27 refers to both AC and DC systems.220.7 refers to marking of conductors at 50 volts or less regardless of voltage type.Article 720 refers to systems at 50 volts or less whether DC or AC.210.5(C)(2) refers to marking of conductors for DC systems 50V or less215.12(C)(2) refers to identification of DC feeder conductors at 50V or less.Section 480.5 states that overcurrent protection shall not be required for conductors from a battery with a nominal voltage of 50 volts or less.690.71 refers to DC storage batteries that operate at a voltage of 50 volts, nominal or less.

There are many other codes sections not mentioned which vary back and forth between 50 and 60V. The code is not consistent. I am recommending that globally the term 60V DC be replaced with 50V nominal DC.


Submitter Full Name: Lawrence AyerOrganization: Biz Com Electric, Inc.Affilliation: Independent Electrical Contractors, Inc.Street Address: City: State:Zip: Submittal Date: Tue Nov 04 21:18:12 EST 2014


I, Lawrence Ayer, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and fullrights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.





Move all definitions to Article 100.It seems that every cycle definitions are moved from a .2 section within an Article to Article 100 because someone points out that the particular term is used in more than oneArticle. For NEC users, especially new ones it makes understanding the rules that much more difficult.We also have examples like Dustight that is defined differently in Article 100 as compared to 500.2. That creates confusion.A greater problem is when a term is defined within an Article yet the term is used elsewhere in the NEC. Is the term in the Article without it being defined supposed to be something different or can it be used the same way? That also creates confusion.Some examples include Metal wireway which is defined in 376.2 yet the term is used elsewhere such as in Articles 210, 225, etc. A Tap conductor is defined in 240.2, is a motor tap conductor supposed to be something different in Article 430?As stated in the NEC Style Manual definitions cannot contain requirements yet it is oftenargued that stating that something is or is not does not necessarily constitute a requirement. If it is not, then it doesn't meet the definition. If the term is used in multiple articles then creating a definition that is usable in all those Articles is the best approach. Specific requirements which can be different can still be placed in each ArticleMany other standards have all definitions in one location. Constancy will be improved by having the panels develop language that will use the same terms without creating unnecessary conflicts. I understand the Correlating Committee recently agreed to leave terms in the .2 Section of Articles. I respectfully ask them to reconsider that position.


It seems that every cycle definitions are moved from a .2 section within an Article to Article 100 because someone points out that the particular term is used in more than one Article. For NEC users, especially new ones it makes understanding the rules that much more difficult.

We also have examples like Dustight that is defined differently in Article 100 as compared to 500.2. That creates confusion.

A greater problem is when a term is defined within an Article yet the term is used elsewhere in the NEC. Is the term in the Article without it being defined supposed to be something different or can it be used the same way? That also creates confusion.

Some examples include Metal wireway which is defined in 376.2 yet the term is used elsewhere such as in Articles 210, 225, etc. A Tap conductor is defined in 240.2, is a motor tap conductor supposed to be something different in Article 430?

As stated in the NEC Style Manual definitions cannot contain requirements yet it is often argued that stating that something is or is not does not necessarily constitute a requirement. If it is not, then it doesn't meet the definition. If the term is used in multiple articles then creating a definition that is usable in all those Articles is the best approach. Specific requirements which can be different can still be placed in each Article

Many other standards have all definitions in one location. Constancy will be improved by having the panels develop language that will use the same terms without creating unnecessary conflicts. I understand the Correlating Committee recently agreed to leave terms in the .2 Section of Articles. I respectfully ask them to reconsider that position.





Submitter Full Name: Paul DobrowskyOrganization: SelfStreet Address:City:State:Zip: Submittal Date: Thu Nov 06 19:36:47 EST 2014


I, Paul Dobrowsky, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am Paul Dobrowsky, and I agree to be legally bound by the above Copyright Assignment and the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature




Voltages references in NEC

Globally edit the text by removing the following text stringsnominalNominal, nominal, Nominalnominal ,Nominal ,, nominal ,, Nominal ,That is, remove the word nominal and any optional commas preceding or following it. This is a little too broad, I will provide additional submissions that repair "collateral damage" to nominals not related to voltage.Substantiation:The NEC contains 2744 sentences that contain volt, voltage, and V. Some of the Vare false positives (part V, Volume ...). 317 sentences contain nominal. The use of the word nominal does not appear to have a particular pattern when it is found in connection to voltage. Having some voltages marked as nominal and others not marked when both are intended to be nominal, leads to confusion

Making it clear what a particular voltage reference meains is important. Some of the voltage references are for exact voltages. This is true for most "limit" specifications such as "the voltage shall not exceed 42.4 volts". Other voltages are nominal and refer to a range of voltages.

The specification of 600 volts, which is a utilization voltage, and 1000 volts, which is the "new" 600 volts, is problematical. I have chosen to treat these references asnominal.

I propose that the NEC indicate that all voltages listed in it are nominal, unless specifically marked actual This would rid the document of uncertainty as to whether or not a given voltage specification was actual or nominal.

Also add a table that indicates that the three groups of nominal voltages refer to the same thing: for instance 125/250 device rating, 120/240 load rating, and 115/230motor rating.Coordination:These changes need to be co-ordinated with other submissions These submission will be keyed back to this submission number (1902). They include defining ActualVoltage and adding actual where appropriate.(1)nominal for battery circuits (2)nominal for 120/60 cneter grounded AC circuits (3)

Nearly always nominal (4)Occasionally nominal (5)nominal in 600




kshea

Text Box

PI 1902

The NEC contains 2744 sentences that contain volt, voltage, and V. Some of the V are false positives (part V, Volume ...). 317 sentences contain nominal. The use of the word nominal does not appear to have a particular pattern when it is found in connection to voltage. Having some voltages marked as nominal and others not marked when both are intended to be nominal, leads to confusion

ALL RELATED submissions link back to this (1902). Although other related submissions may be interrelated, such links would grow exponentially (the mathematical exponentially, not the TV news exponentially)

Making it clear what a particular voltage reference meains is important. Some of the voltage references are for exact voltages. This is true for most "limit" specifications such as "the voltage shall not exceed 42.4 volts". Other voltages are nominal and refer to a range of voltages.

The specification of 600 volts, which is a utilization voltage, and 1000 volts, which is the "new" 600 volts, is problematical. I have chosen to treat these references as nominal.

I propose that the NEC indicate that all voltages listed in it are nominal, unless specifically marked actual This would rid the document of uncertainty as to whether or not a given voltage specification was actual or nominal.

Also add a table that indicates that the three groups of nominal voltages refer to the same thing: for instance 125/250 device rating, 120/240 load rating, and 115/230 motor rating.

Coordination:

These changes need to be co-ordinated with other submissions These submission will be keyed back to this submission number (1902). They include defining Actual Voltage and adding actual where appropriate.

(1)nominal for battery circuits (2)nominal for 120/60 center grounded AC circuits (3)Nearly always nominal (4)Occasionally nominal (5)nominal in 600{{table formatting was lost when copying it in}}}Actual (exact) <--

nominal

(utilization)<--

Voltages references in NEC8 1080 90 100010 1280 110 230012.4 1530 115 240015 2000(4) 120 416021.2 2001 120/240 720024(1) 5000 180 750024.8 15000(5) 200 1380030 35000 208 1440042 208Y/120 15000(5)42.4 220 2300050 230 3450060(2) 240 4600065 277 6900080 440 115000100 460 138000132 480 230000150480Y/277




480Y/277

Actual (exact) <--

nominal(utilization)

8 1080 9010 1280 11012.4 1530 115

15 2000(4) 120

21.2 2001 120/240

24 (1) 5000 180

24.8 15000(5) 200

30 35000 208

42 208Y/120

42.4 22050 230

60 (2) 24065 27780 440100 460132 480

150

200 500300 550301 600350 600Y/347

600 (3)

750900


File Name Description ApprovedNFPA-9102_libreOffice.pdf table for substantiation ✓





Public Input No. 2349-NFPA 70-2014 [Section No. Table] This submission depends on 1902












Submitter Full Name: JAMES WILLIAMSOrganization: noneAffilliation: Retired Master ElectricianStreet Address: City: State:Zip: Submittal Date: Wed Oct 15 11:34:29 EDT 2014







Voltages found in NECActual (Exact) Nominal (Utilization)

8 1080 90 1000

10 1280 110 2300

12.4 1530 115 2400

15 2000(4) 120 4160

21.2 2001 120/240 7200

24(1) 5000 180 7500

24.8 15000(5) 200 13800

30 35000 208 14400

42 208Y/120 15000(5)

42.4 220 23000

50 230 34500

60(2) 240 46000

65 277 69000

80 440 115000

100 460 138000

132 480 230000

150 480Y/277

200 500

300 550

301 600

350 600Y/347

600(3)

750

900(1)Nominal for battery circuits (2)Nominal for 120/60 center grounded AC circuits (3)Nearly always nominal (4)Occasionally nominal (5)Nominal in 600


Public Input No. 3703-NFPA 70-2014 [ Definition: Rated-Load Current. ]

Rated-Load Current.

The rated-load current for of a hermetic refrigerant motor-compressor is the current resulting when themotor-compressor it is operated at the rated load, rated voltage, and rated frequency of the equipment itserves.


According to the NEC Style Manual, the term being defined should not be included in the definition.


Submitter Full Name: Phil Simmons

Organization: Simmons Electrical Services

Street Address:

City:

State:

Zip:

Submittal Date: Tue Nov 04 22:34:28 EST 2014

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentParam...

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Public Input No. 2364-NFPA 70-2014 [ Section No. 409.1 ]

409.1 Scope.

This article covers industrial control panels intended for general use and operating at 1000 volts or less.

Informational Note 1 : ANSI/UL 508, Standard for Industrial Control Panels, is a safety standard forindustrial control panels.

Informational Note 2: For Information on fire alarm control panels, see NFPA 72-2013, National FireAlarm and Signaling Code.


Reason: This makes it clear that NFPA 72 has the equipment requirements for Fire Alarm Panels and equipment. Installations have been made with improper equipment on a very important life safety system.


Submitter Full Name: JEFFREY FECTEAU

Organization: UNDERWRITERS LABORATORIES LLC

Street Address:

City:

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Zip:

Submittal Date: Wed Oct 22 21:15:13 EDT 2014


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409.30 Disconnecting Means, Motor Loads .

Disconnecting means that supply motor loads shall comply with Part IX of Article 430.


The change differentiates this section from a new section proposed for disconnecting means for industrial control panels. (Reference PI No. 1583-NFPA 70-2014.)


Submitter Full Name: DAVID BREDHOLD

Organization: C & I ENGINEERING

Street Address:

City:

State:

Zip:

Submittal Date: Sat Oct 04 08:32:56 EDT 2014


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409.60 Grounding Bonding .

Multisection industrial control panels shall be bonded together with an equipment grounding bondingconductor or an equivalent equipment grounding bonding bus sized in accordance with Table 250.122.Equipment grounding bonding conductors shall be connected to this equipment grounding bonding bus or toan equipment grounding bonding termination point provided in a single-section industrial control panel.


The term “equipment grounding conductor” is a misnomer even though it has been in use for many many years. Although it is a grounded conductor in normal practice for grounded systems, the idea that grounding makes a system safe and prevents an electrical shock is inherently false. Connecting a conductor from metallic equipment “likely to become energized” to the earth does not reduce the shock potential during a fault but, rather, may enhance it if it becomes the only path back to the source. The shock potential is the voltage drop along the conductor (equipment grounding conductor) due to fault current flowing back to the source. The shock hazard depends upon the time until the fault is cleared by an overcurrent device or some other event, thus the clearing time is a critical factor in safety.This conductor (equipment grounding conductor) is intended to protect equipment and personnel by providing a sufficiently high fault current to operate an overcurrent device and clear the fault rapidly. A low impedance fault current path can provide the necessary high fault current regardless of whether the conductor is grounded or not. It is only the fault current path and not the “grounding” that can provide the high fault current necessary to operate an overcurrent device rapidly. The term “bonding” is generally used to insure that a connection and current path is low impedance, reliable, and able to withstand the fault current. This conductor provides a basic bonding function by insuring, through proper sizing and bonding jumpers as necessary, that the connection from equipment to fault current source is both low impedance and reliable. A “bonding” function is the necessary function rather than a “grounding” function to clear a fault rapidly. A grounding function is provided by a grounding electrode conductor that connects an electrical system source to the earth. An overcurrent device operates in a time interval based upon the current through it. That current depends upon proper bonding to the source and is relatively independent of connection to the grounding electrode at the source where the overcurrent device is located. The use of the term “equipment bonding conductor” would better describe the function of this important conductor instead of the term “equipment grounding conductor”. “Systems” are “grounded”, “equipment” is “bonded”. Making this change would also bring the NEC into conformity with the Canadian Electrical Code which uses the term “equipment bonding conductor”.Code Panel 5 members have often stated that those in the industry understand what the purpose of the equipment grounding conductor is for. The Panel members understand this also. There are, however, many people doing electrical work who don’t understand and think connecting equipment to a local grounding electrode accomplishes the same objective as an equipment grounding conductor. This is apparent from the large number of questions that are asked at IAEI inspectors meetings, grounding classes, and as documented recently in the July/August 2014 issue of the NFPA Journal under the title “Pool Rules”. Just ask the inspectors and the teachers.Changing the terminology will serve to make it clear that the principal function of this conductor is to bond the equipment being protected to the source where the fault current originates. Changing the terminology will not confuse those that understand the proper purpose of this bonding conductor.


Submitter Full Name: ELLIOT RAPPAPORT

Organization: ELECTRO TECHNOLOGY

Street Address:

City:

State:

Zip:

Submittal Date: Mon Oct 27 16:28:39 EDT 2014


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409.110 Marking.

An industrial control panel shall be marked with the following information that is plainly visible afterinstallation:

(1) Manufacturer's name, trademark, or other descriptive marking by which the organization responsiblefor the product can be identified.

(2) Supply voltage, number of phases, frequency, and full-load current for each incoming supply circuit.

(3) Industrial control panels supplied by more than one power source such that more than onedisconnecting means is required to disconnect all power within the control panel shall be marked toindicate that more than one disconnecting means is required to de-energize the equipment.

(4) Short-circuit current rating of the industrial control panel based on one of the following:

(5) Short-circuit current rating of a listed and labeled assembly

(6) Short-circuit current rating established utilizing an approved method

Informational Note: ANSI/UL

508

508A , Standard for Industrial Control Panels , Supplement SB, is an example of an approvedmethod.

Exception to (4): Short-circuit current rating markings are not required for industrial control panelscontaining only control circuit components.

(7) If the industrial control panel is intended as service equipment, it shall be marked to identify it as beingsuitable for use as service equipment.

(8) Electrical wiring diagram or the identification number of a separate electrical wiring diagram or adesignation referenced in a separate wiring diagram.

(9) An enclosure type number shall be marked on the industrial control panel enclosure.


UL 508A is the standard for industrial control panels that includes Supplement SBUL 508 is a different standard for industrial control equipment


Submitter Full Name: JEFF GOLDSMITH

Organization: Seven Seas Water

Street Address:

City:

State:

Zip:

Submittal Date: Tue Oct 21 17:02:36 EDT 2014


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409.110 Marking.




(3) Industrial control panels supplied by more than one power source such that more than onedisconnecting means is required to disconnect all power within the control panel shall be marked toindicate that more than one disconnecting means is required to de-energize the equipment.




Informational Note: ANSI/UL

508

508A , Standard for Industrial Control Panels , Supplement SB, is an example of an approvedmethod.






Editorial change. UL 508A is the standard for industrial control panels. UL 508 is a component standard.




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409.110 Marking.




(3) Industrial control panels supplied by more than one power source such that more than onedisconnecting means is required Location of disconnecting means necessary to disconnect all powerwithin the control panel shall be marked to indicate that more than one disconnecting means is requiredto de-energize the equipment sources of power Exception: In industrial installations under engineering supervision where conditions of maintenanceand supervision ensure that only qualified persons service the equipment, the location of thedisconnecting means shall be permitted to be documented in a readily accessible manner. Thelocation of the documentation necessary to identify all sources of power shall be marked on theindustrial control panel .




Informational Note: ANSI/UL 508, Standard for Industrial Control Panels , Supplement SB, is anexample of an approved method.








This proposed change will address a gap in worker safety while providing relief to industrial facilities. The current wording warns a service technician that multiple sources of power are present, but provides no guidance in how to locate those sources of power. If an emergency arises which necessitates disconnection of power but the technician is unfamiliar with the facility there could be a risk to both personnel and property.

The proposed change will require that generally all industrial control panels be marked with the locations of all sources of power. This is a common concept that has been adopted in several places throughout the NEC in recent cycles, such as 225.52(F) to identify sources of power for feeder or branch-circuits passing through another building or structure, 312.8(3) requiring identification of disconnecting means for panelboard enclosures containing feed-through conductors, 408.4(B) for the source of power to the panelboard or switchgear, 450.11(B) for transformers, etc. These requirements all enhanced worker safety, as will the proposed change.

The proposed exception is intended to address installations where due to the number of sources of power located in a particular industrial control panel a single label or placard identifying all sources would be unpractical, if not impossible. Some situations could result in labels larger than the industrial control panel, or, if sized to fit the panel, would result in a font size so small that it would be unreadable. Since these are locations under engineering supervision and only qualified persons will service the installation, having the required documentation in a readily


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accessible location for those individuals would still provide an acceptable level of protection. The label on the panel would only be required to indicate where this documentation is located. Additionally, this will not require the label to be constantly updated as circuits are added or removed, only that the engineering drawings and documentation be kept up to date.

This will provide an acceptable balance between enhancing the safety of workers engaged in maintenance activities and avoiding creating burdensome labeling requirements for facilities.


Submitter Full Name: Jebediah Novak

Organization: Cedar Rapids Electrical JATC

Affilliation: International Brotherhood of Electrical Workers

Street Address:

City:

State:

Zip:

Submittal Date: Thu Nov 06 18:13:26 EST 2014


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409.22 Short-Circuit Current Rating.

An industrial control panel shall not be installed where the available fault current exceeds its short-circuitcurrent rating as marked in accordance with 409.110 (4). Where the available fault current is not known theindustrial control panel shall be protected by an overcurrent device that will limit the fault current to a valuethat will be equal to or less than the marked short-circuit current rating of the industrial control panel.


Many industrial control panels have an SCCR marking, but the available fault current is not marked on the distribution equipment. This makes it very difficult for installers to comply with the first statement of this section. The available fault current value is currently required to be on the service equipment only. The addtional language is to make the installer aware that a means of limiting the fault current should be installed to protect the industrial control panel. That means would be some type of device with current limiting characteristics.


Submitter Full Name: WILLIAM GROSS

Organization: Tri-City Electric

Street Address:

City:

State:

Zip:

Submittal Date: Thu May 29 13:42:48 EDT 2014


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Public Input No. 1152-NFPA 70-2014 [ New Section after 409.22 ]

TITLE OF NEW CONTENT 409.26 Coarse Thread Screws

Type your content here ...

Coarse thread screw(s) shall not enter electrical enclosures.


Whether coarse thread screws are added before conductors, busbars, electric components, etc. are installed or added to an existing installation; they are a recipe for disaster. Coarse thread screws are very convenient and are used this way. I believe this should be a violation. The closest I see the NEC addressing this is 314.23(B)(1). The way the new entry is worded allows coarse thread screws to exit enclosures. For instance, an electrical component could be installed in an electrical enclosure with coarse thread self tapper screws zipped from the inside to the outside of the enclosure.


Submitter Full Name: Norman Feck

Organization: State of Colorado

Affilliation: self

Street Address:

City:

State:

Zip:

Submittal Date: Thu Aug 28 07:59:26 EDT 2014


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409.23 Available Fault Current

Industrial Control panels shall be legibly marked in the field with the maximum available fault current. Thefield marking(s) shall include the date the fault-current calculation was performed and be of sufficientdurability to withstand the environment.


Listed industrial control panels are being properly marked with the short-circuit current rating by the manufacturer, but there is typically no information on the job site as to the available short-circuit at the industrial control panel. If the industrial control panel were marked with the available fault current in the field, similar to the requirements in 110.24, it would be much easier for us to ensure that the equipment was being properly protected. Note that many unlisted industrial control panels are being installed without a marked short-circuit current rating, and are being cited for violating 409.110(4).


Submitter Full Name: HOWARD HERNDON

Organization: SOUTHWEST ELECTRITECH SVCS LLC

Street Address:

City:

State:

Zip:

Submittal Date: Fri Nov 07 15:31:42 EST 2014


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TITLE OF NEW CONTENT


409.23 Available Fault Current. Industrial Control panels shall be legibly marked in the field with themaximum available fault current. The field marking(s) shall include the date the fault-current calculation wasperformed and be of sufficient durability to withstand the environment involved.


As inspectors, we are having an extremely difficult time enforcing proper short-circuit current ratings of industrial control panels (409.110(4) and 409.22). Listed industrial control panels are being properly marked with the short-circuit current rating by the manufacturer, but there is typically no information on the job site as to the available short-circuit at the industrial control panel. If the industrial control panel were marked, in the field, similar to the requirements in NEC® 110.24, it would be much easier for us to assure that the equipment was being properly protected. We have a responsibility to the business owner to do the best job we can to help assure they are getting a building that is free of electrical hazards. This change would allow us to successfully fulfill that responsibility. Note that many unlisted industrial control panels are being installed without a marked short-circuit current rating, and we are citing them for a violation of 409.110(4).


Related Input Relationship

Public Input No. 4427-NFPA 70-2014 [New Section after 670.5]


Submitter Full Name: ROCCO DELUCA

Organization: City of Phoenix,AZ

Street Address:

City:

State:

Zip:



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Public Input No. 3994-NFPA 70-2014 [ Section No. 800.179(D) ]

(D) Type CM.

Type CM communications cables shall be listed as being suitable for general-purpose communications use,with the exception of risers and plenums, and shall also be listed as being resistant to the spread of fire.

Informational Note 1 : One method of defining resistant to the spread of fire is that the cables do notspread fire to the top of the tray in the “UL Flame Exposure, Vertical Flame Tray Test” in ANSI/UL1685-2011, Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test forElectrical and Optical-Fiber Cables. The smoke measurements in the test method are not applicable.

Another method of defining resistant to the spread of fire is for the damage (char length) not toexceed 1.5 m (4 ft 11 in.) when performing the CSA “Vertical Flame Test— Cables in Cable Trays,” asdescribed in CSA C22.2 No. 0.3-M-2001, Test Methods for Electrical Wires and Cables.

Informational Note 2 : One method of defining optional limited smoke characteristics for general-purpose use cables is that the cables exhibit a peak smoke release rate not exceeding 0.25 m2/sand a total smoke released not exceeding 95 m2 when tested in accordance with the "UL FlameExposure, Vertical Tray Flame Test" in ANSI/UL 1685-2010, Standard for Safety for Vertical-TrayF-re-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables"CSA "VerticalFlame Test - Cables in Cable Trays.

Another method of defining optional limited smoke characteristics for general-purpose use cables isthat the cables exhibit a peak smoke release rate not exceeding 0.40 m2/s and a total smokereleased not exceeding 150 m2 when tested in accordance with the CSA "Vertical Flame Test -Cables in Cable Trays," as described in CSA C22.2 No. 0.3-M-2009, Test Methods for Wires andCables".


The UL 1685 and the CSA FT4 standard both include ways in which a marking of limited smoke can be obtained, but the code is silent about it. It would be helpful for users who are interested in obtaining a limited smoke cable to be able to avail themselves of this option specifically. It is well known that the lack of visibility in fires is a critical component of fire safety. This proposed change will not require such a marking but will indicate its optional existence. This is being proposed for articles 725, 760, 770, 800, 820 and 830.


Submitter Full Name: Marcelo Hirschler

Organization: GBH International

Street Address:

City:

State:

Zip:

Submittal Date: Wed Nov 05 18:20:26 EST 2014


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409.108 Service Equipment.

Where used as service equipment, each industrial control panel shall be of the type that is suitable for use asservice equipment.

Where a grounded conductor is provided, the industrial control panel shall be provided with a main bondingjumper, sized in accordance with 250.28(D) , for connecting the grounded conductor, on its supply side, tothe industrial control panel equipment ground bond bus or equipment ground bond terminal.






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Public Input No. 1583-NFPA 70-2014 [ New Article after 409 ]



Disconnecting Means, Industrial Control Panels

1. A disconnecting means shall be provided for each incoming supply circuit. The disconnecting means shallbe located on or in sight from the industrial control panel.

2. A disconnecting means shall be provided for each control circuit intended to be supplied from a separatesource. The disconnecting means shall be located on or in sight from the industrial control panel.


As presently worded, only motor loads are required to have a disconnecting means. Disconnecting means are required throughout the NEC for other loads as well; industrial control panels are no different.

Control circuits may be supplied from separate sources, but are not specifically required to have a disconnecting means.

UL 508A, the standard for industrial control panels, contains similar requirements in its sections 30 and 39.

NEC 409.110(2) and (3) refer to marking requirements for one or more supply circuits, but do not set forth the requirement.




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410.1 Scope.

This article covers luminaires, portable luminaires, lampholders, pendants, incandescent filament lamps, arclamps, electric-discharge lamps, decorative lighting products, lighting accessories for temporary seasonaland holiday use, portable flexible lighting products, and the wiring and equipment forming part of suchproducts and lighting installations.

Informational Note: For additional information see IEEE 3001.9 Recommended Practice for the Lighting ofIndustrial and Commercial Facilities


Illumination technology has been a fast-moving space in recent years due to energy conservation concerns so a stronger linkage with accepted engineering practice is necessary for all stakeholders. The IEEE Industrial Applications Society 3000 series of standards are part of a larger project to revise and reorganize the technical content of the 13 existing IEEE Color Books which provided significant engineering information from experienced engineers. The Red, White, and Gray Color books, for example, contained information about illumination technology but was not previously referenced into this section. It is time to do this now. While many of the 3000 series standards are still “works in progress” and the topical coverage seeking its proper place it is not too soon for the various NEC committees to evaluate the importance of strengthening the NEC’s linkage to the best engineering information possible.

The benefit of now referencing the 3000 series of documents into the NEC now include, but are not limited to: 1) the elimination of duplicate material that now exists in the various color books, 2) the speeding up of the revision process by allowing Color Book content to be reviewed, edited and balloted in smaller segments, and 3) to accommodate more modern, efficient and cost effective physical publishing/distribution methodologies (i.e., the elimination of large and expensive to produce books). This recommended practice is likely to be of greatest value to the power-oriented engineer with limited experience with such requirements and a way to connect more directly with domain expertise in leading practice for designing and installing safe supply circuits for illumination technology.

More information is available at this linkhttp://standards.ieee.org/findstds/3000stds/index.html


Submitter FullName:

Michael Anthony

Organization: University of Michigan

Affilliation:IEEE I&CPS Education and Healthcare Facility ElectrotechnologySub-Committee

Street Address:

City:

State:

Zip:

Submittal Date: Sun Nov 02 09:34:21 EST 2014


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430.1 Scope.

This article covers motors, motor branch-circuit and feeder conductors and their protection, motor overloadprotection, motor control circuits, motor controllers, and motor control centers.

Figure 430.1 Article 430 Contents.

Informational Note No. 1: Installation requirements for motor control centers are covered in110.26(E) . Air-conditioning and refrigerating equipment are covered in Article 440.

Informational Note No. 2: Figure 430.1 is for information only.

Informational Note No. 3: For additional information about motors see IEEE P3004.8 RecommendedPractice for Motor Protection in Industrial and Commercial Power Systems


Motor supply circuit design, installation and operation should be informed by faster-moving engineering considerations available in the new IEEE 3000 series of recommended practices. The IEEE Industrial Applications Society 3000 series of standards are part of a larger project to revise and reorganize the technical content of the 13 existing IEEE Color Books which provided significant engineering information from experienced engineers. While many of the 3000 series standards are still “works in progress”, and the topical coverage seeking its proper place, it is not too soon for the various NEC committees to evaluate the importance of strengthening the NEC’s linkage to electrical engineering thought leadership.

More information is available at this link http://standards.ieee.org/findstds/3000stds/index.html


Submitter Full Michael Anthony


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Name:


Affilliation:IEEE I&CPS Education and Healthcare Facility ElectrotechnologySub-Committee

Street Address:

City:

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430.1 Scope.

This article covers motors, motor branch-circuit and feeder conductors and their protection, motor overloadprotection, motor control circuits, motor controllers, and motor control centers.

Figure 430.1 Article 430 Contents.

Informational Note No. 1: Installation requirements for motor control centers are covered in110.26(E) . Air-conditioning and refrigerating equipment are covered in Article 440.

Informational Note No. 2: Figure 430.1 is for information only.



Fig_430.1.pdf Proposed revision to Fig 430.1


Fig. 430.1 indicates Motor circuit conductors to be only downstream of Motor branch circuit short-circuit and ground-fault protection, but does not clearly indicate whether the conductors upstream of the motor feeder short-circuit and ground-fault protection are motor circuit conductors. This proposed revision clarifies this issue. While it's true that this figure is informational, the information should help clarify the text. Without this revision, it is difficult to discern whether the referenced text (Part II) applies to the conductors electrically located between the Motor feeder protection and the motor branch circuit protection or not. The possible implication is if the provisions of article 430 do not clearly identify the conductors between the motor feeder protection and the motor branch-circuit protection as covered by Article 430, the conductors must be sized by the requirements of Articles 240 and 310. I do not believe that is the intent of the NEC.



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Duplicate "Motor Circuit Conductor" and "Part II" as indicated to new location.

Submitter Full Name: Tom Morgan

Organization: Burns and McDonnell

Street Address:

City:

State:

Zip:

Submittal Date: Fri Oct 10 12:10:27 EDT 2014


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430. 4 2 Part-Winding Motors .

A part-winding start induction or synchronous motor is one that is arranged for starting by first energizingpart of its primary (armature) winding and, subsequently, energizing the remainder of this winding in one ormore steps. A standard part-winding start induction motor is arranged so that one-half of its primary windingcan be energized initially, and, subsequently, the remaining half can be energized, both halves then carryingequal current. A hermetic refrigerant compressor motor shall not be considered a standard part-winding startinduction motor.

430.4 Part-Winding Motors.

Where separate overload devices are used with a standard part-winding start induction motor, each half ofthe motor winding shall be individually protected in accordance with 430.32 and 430.37 with a trip currentone-half that specified.

Each motor-winding connection shall have branch-circuit short-circuit and ground-fault protection rated at notmore than one-half that specified by 430.52.

Exception: A short-circuit and ground-fault protective device shall be permitted for both windings if thedevice will allow the motor to start. Where time-delay (dual-element) fuses are used, they shall bepermitted to have a rating not exceeding 150 percent of the motor full-load current.


The first half of 430.4 is a definition and should according to the NEC format be placed in definitions


Submitter Full Name: Jonathan Newton

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Mon Apr 07 14:58:39 EDT 2014


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Public Input No. 488-NFPA 70-2014 [ Section No. 430.6(A)(1) ]

(1) Table Values.

Other than for motors built for low speeds (less than 1200 RPM) or high torques, and for multispeed motors,the values given in Table 430.247, Table 430.248, Table 430.249, and Table 430.250 shall be used todetermine the ampacity of conductors or ampere ratings of switches, branch-circuit short-circuit andground-fault protection, instead of the actual current rating marked on the motor nameplate. Where a motoris marked in amperes, but not horsepower, the horsepower rating shall be assumed to be that correspondingto the value given in Table 430.247, Table 430.248, Table 430.249, and Table 430.250, interpolated ifnecessary. Motors built for low speeds (less than 1200 RPM) or high torques may have higher full-loadcurrents, and multispeed motors will have full-load current varying with speed, in which case the nameplatecurrent ratings shall be used.

Exception No. 1: Multispeed motors shall be in accordance with 430.22(A B ) and and 430.52.

Exception No. 2: For equipment that employs a shaded-pole or permanent-split capacitor-type fan orblower motor that is marked with the motor type, the full load current for such motor marked on thenameplate of the equipment in which the fan or blower motor is employed shall be used instead of thehorsepower rating to determine the ampacity or rating of the disconnecting means, the branch-circuitconductors, the controller, the branch-circuit short-circuit and ground-fault protection, and the separateoverload protection. This marking on the equipment nameplate shall not be less than the current markedon the fan or blower motor nameplate.

Exception No. 3: For a listed motor-operated appliance that is marked with both motor horsepower andfull-load current, the motor full-load current marked on the nameplate of the appliance shall be usedinstead of the horsepower rating on the appliance nameplate to determine the ampacity or rating of thedisconnecting means, the branch-circuit conductors, the controller, the branch-circuit short-circuit andground-fault protection, and any separate overload protection.


References 430.22 (A) when it should reference 430.22(B)




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(1) Table Values.

Other than for motors built for low speeds (less than 1200 RPM) or high torques, and for multispeed motors,the values given in Table 430. 247 6(A)(1)(a) , Table 430. 248 6(A)(1)(b) , Table 430. 249, 6(A)(1)(c) andTable 430. 250 6(A)(1)(d) shall be used to determine the ampacity of conductors or ampere ratings ofswitches, branch-circuit short-circuit and ground-fault protection, instead of the actual current rating markedon the motor nameplate. Where a motor is marked in amperes, but not horsepower, the horsepower ratingshall be assumed to be that corresponding to the value given in Table 430. 247 6(A)(1)(a) , Table430. 248 6(A)(1)(b) , Table 430. 249, 6(A)(1)(c) and Table 430. 250 6(A)(1)(d) , interpolated if necessary.Motors built for low speeds (less than 1200 RPM) or high torques may have higher full-load currents, andmultispeed motors will have full-load current varying with speed, in which case the nameplate current ratingsshall be used.

Exception No. 1: Multispeed motors shall be in accordance with 430.22(A) and 430.52.

Exception No. 2: For equipment that employs a shaded-pole or permanent-split capacitor-type fan orblower motor that is marked with the motor type, the full load current for such motor marked on thenameplate of the equipment in which the fan or blower motor is employed shall be used instead of thehorsepower rating to determine the ampacity or rating of the disconnecting means, the branch-circuitconductors, the controller, the branch-circuit short-circuit and ground-fault protection, and the separateoverload protection. This marking on the equipment nameplate shall not be less than the current markedon the fan or blower motor nameplate.

Exception No. 3: For a listed motor-operated appliance that is marked with both motor horsepower andfull-load current, the motor full-load current marked on the nameplate of the appliance shall be usedinstead of the horsepower rating on the appliance nameplate to determine the ampacity or rating of thedisconnecting means, the branch-circuit conductors, the controller, the branch-circuit short-circuit andground-fault protection, and any separate overload protection.


According to the 2011 National Electrical Code Style Manual, Chapter 2 Section 2.3.1, "Tables and figures shall be referenced in the text and shall be designated by the number of the NEC rule in which they are referenced." The following tables listed are not designated by the number of the NEC rule in which they are referenced. Table 430.247, Table 430.248, Table 430.249 and Table 430.250. There are no such section numbers. This is similar justification for changing the old Table 310.16 to Table 310.15(B)(16). There will be multiple correlating changes required to catch the various times these tables are referenced. Sections 430.6(C), 430.110(C)(1) & (3), 440.7, 440.12(A)(2), 440.12(B)(1)(a) & (b) also reference these tables.


Submitter Full Name: GREGORY GREINER

Organization:

Street Address:

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Submittal Date: Thu Oct 30 19:41:37 EDT 2014


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430.8 Marking on Controllers.

A controller shall be marked with the manufacturer’s name or identification, the voltage, the current orhorsepower rating, the short-circuit current rating, and other necessary data to properly indicate theapplications for which it is suitable.

Exception No. 1: The short-circuit current rating is not required for controllers applied in accordance with430.81(A) or (B).

Exception No. 2: The short-circuit rating is not required to be marked on the controller when the short-circuit current rating of the controller is marked elsewhere on the assembly.

Exception No. 3: The short-circuit rating is not required to be marked on the controller when theassembly into which it is installed has a marked short-circuit current rating.

Exception No. 4: Short-circuit ratings are not required for controllers rated less than 2 hp at 300 V actualvolts or less and listed exclusively for general-purpose branch circuits.

A controller that includes motor overload protection suitable for group motor application shall be marked withthe motor overload protection and the maximum branch-circuit short-circuit and ground-fault protection forsuch applications.

Combination controllers that employ adjustable instantaneous trip circuit breakers shall be clearly marked toindicate the ampere settings of the adjustable trip element.

Where a controller is built in as an integral part of a motor or of a motor-generator set, individual marking ofthe controller shall not be required if the necessary data are on the nameplate. For controllers that are anintegral part of equipment approved as a unit, the above marking shall be permitted on the equipmentnameplate.

Informational Note: See 110.10 for information on circuit impedance and other characteristics.


This section uses a voltage that is an "actual" hard limit.Refer to the substantiation for 1902 for more information.



Public Input No. 1902-NFPA 70-2014 [Global Input] This submission depends on 1902


Submitter Full Name: JAMES WILLIAMS

Organization: none

Affilliation: Retired Master Electrician

Street Address:

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2303 of 5603 11/18/2014 2:46 PM

Public Input No. 4291-NFPA 70-2014 [ Section No. 430.10(B) ]

(B) Wire-Bending Space in Enclosures.

Minimum wire-bending space within the enclosures for motor controllers shall be in accordance with Table430.10(B) where measured in a straight line from the end of the lug or wire connector (in the direction thewire leaves the terminal) to the wall or barrier. Where alternate wire termination means are substituted forthat supplied by the manufacturer of the controller, they shall be of a type identified by the manufacturer foruse with the controller and shall not reduce the minimum wire-bending space.

Table 430.10(B) Minimum Wire-Bending Space at the Terminals of Enclosed Motor Controllers

Size of Wire (AWG or kcmil)

Wires per Terminal*

1 2

mm in. mm in.

14–10 18–10 Not specified — —

8–6 38 1 1⁄2 — —

4–3 50 2 — —

2 65 2 1⁄2 — —

1 75 3 — —

1/0 125 5 125 5

2/0 150 6 150 6

3/0–4/0 175 7 175 7

250 200 8 200 8

300 250 10 250 10

350–500 300 12 300 12

600–700 350 14 400 16

750–900 450 18 475 19

*Where provision for three or more wires per terminal exists, the minimum wire-bending space shall be inaccordance with the requirements of Article 312.


as coordinated with 240 310 430 we need smaller cables down to #18cu/#17al for 1000v services


Submitter Full Name: JAMES CAIN


Affilliation: self

Street Address:

City:

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Zip:



2304 of 5603 11/18/2014 2:46 PM


430.12 Motor Terminal Housings.

(A) Material.

Where motors are provided with terminal housings, the housings shall be of metal and of substantialconstruction.

Exception: In other than hazardous (classified) locations, substantial, nonmetallic, noncombustiblehousings shall be permitted, provided an internal grounding means between the motor frame and theequipment grounding connection is incorporated within the housing.

(B) Dimensions and Space — Wire-to-Wire Connections.

Where these terminal housings enclose wire-to-wire connections, they shall have minimum dimensions andusable volumes in accordance with Table 430.12(B) .

Table 430.12(B) Terminal Housings — Wire-to-Wire Connections for less than 600v nominal

Motors 275 mm (11 in.) in Diameter or Less

HorsepowerCover Opening Minimum Dimension Usable Volume Minimum

mm in. cm3 in.3

1 and smallera 41 1 5⁄8 170 10.5

1 1⁄2 , 2, and 3b 45 1 3⁄4 275 16.8

5 and 7 1⁄2 50 2 365 22.4

10 and 15 65 2 1⁄2 595 36.4

Motors Over 275 mm (11 in.) in Diameter — Alternating-Current Motors

Maximum Full Load Current for3-Phase Motors with Maximum of 12

Leads (Amperes)

Terminal Box CoverOpening Minimum

Dimension

Usable VolumeMinimum

Typical MaximumHorsepower 3-Phase

mm in. cm3 in.3 230 Volt 460 Volt

45 65 2.5 595 36.4 15 30

70 84 3.3 1,265 77 25 50

110 100 4.0 2,295 140 40 75

160 125 5.0 4,135 252 60 125

250 150 6.0 7,380 450 100 200

400 175 7.0 13,775 840 150 300

600 200 8.0 25,255 1540 250 500

Direct-Current Motors

Maximum Full-Load Current for Motors withMaximum of 6 Leads (Amperes)

Terminal Box MinimumDimensions

Usable VolumeMinimum

mm in. cm3 in.3

68 65 2.5 425 26

105 84 3.3 900 55

165 100 4.0 1,640 100

240 125 5.0 2,950 180

375 150 6.0 5,410 330

600 175 7.0 9,840 600

900 200 8.0 18,040 1,100

Note: Auxiliary leads for such items as brakes, thermostats, space heaters, and exciting fields shall bepermitted to be neglected if their current-carrying area does not exceed 25 percent of the current-carryingarea of the machine power leads.


2305 of 5603 11/18/2014 2:46 PM

aFor motors rated 1 hp and smaller, and with the terminal housing partially or wholly integral with the frame

or end shield, the volume of the terminal housing shall not be less than 18.0 cm3 (1.1 in.3) per wire-to-wireconnection. The minimum cover opening dimension is not specified.

bFor motors rated 1 1⁄2 , 2, and 3 hp, and with the terminal housing partially or wholly integral with the frame

or end shield, the volume of the terminal housing shall not be less than 23.0 cm3 (1.4 in.3) per wire-to-wireconnection. The minimum cover opening dimension is not specified.

(C) Dimensions and Space — Fixed Terminal Connections.

Where these terminal housings enclose rigidly mounted motor terminals, the terminal housing shall be ofsufficient size to provide minimum terminal spacings and usable volumes in accordance with Table430.12(C)(1) and Table 430.12(C)(2) .

Table 430.12(C)(1) Terminal Spacings — Fixed Terminals

Nominal

Volts

Minimum Spacing

Between LineTerminals

Between Line Terminals and Other Uninsulated MetalParts

mm in. mm in.

240 or less 6 1⁄4 6 1⁄4

Over 250 –1000

10 3⁄8 10 3⁄8

Table 430.12(C)(2) Usable Volumes — Fixed Terminals

Power-Supply Conductor Size (AWG) cu/alMinimum Usable Volume per Power-Supply Conductor

cm3 in.3

18/17 to 16/15

14 /13

8

16

1 /2

1

12/11 and 10/9 20 1 1⁄4

8/7 and 6/6 37 2 1⁄4

(D) Large Wire or Factory Connections.

For motors with larger ratings, greater number of leads, or larger wire sizes, or where motors are installedas a part of factory-wired equipment, without additional connection being required at the motor terminalhousing during equipment installation, the terminal housing shall be of ample size to make connections, butthe foregoing provisions for the volumes of terminal housings shall not be considered applicable.

(E) Equipment Grounding Connections.

A means for attachment of an equipment grounding conductor termination in accordance with 250.8 shall beprovided at motor terminal housings for wire-to-wire connections or fixed terminal connections. The meansfor such connections shall be permitted to be located either inside or outside the motor terminal housing.

Exception: Where a motor is installed as a part of factory-wired equipment that is required to begrounded and without additional connection being required at the motor terminal housing duringequipment installation, a separate means for motor grounding at the motor terminal housing shall not berequired.



18_9_al_amp_tables.xlsx small wire ampacities

table_3_hp_currents.xlsx 3phase 1000v motor fla


these tables need to be updated for 500/1000v motors and have the 230/480 voltage columns combined





2306 of 5603 11/18/2014 2:46 PM

Planned CODE Allowed

Copper

Stranded

AWG

Aluminum

Solid <11

AWG mm2 Area

tested maximum

Ampacities

at 90° C

Amps

at 60° C

Amps

at 75° C

Amps

at 90° C

18 0.823 14 6 7 7

17 1.04 14 6 7 7

16 1.31 18 8 10 10

15 1.65 18 8 10 10

14 2.08 25 15 20 25

13 2.62 22 15 20 20

12 3.31 30 20 25 30

11 4.17 28 20 25 25

10 5.26 40 30 35 40

9 6.63 38 25 30 35

8 8.37 55 40 50 55

7 10.5 54 40 45 50

1000V 3 conductor Ampacity Table Comparisons at 30° C

IEC

RATING

NEMA

RATING

480V HP

Rating

Maximum 480V

Current FLA Rating

Typical 480V Locked

Rotor Rating

Potential

1000V HP

Rating

12A 00 2 3.4 20 4

12A 0 5 7.6 46 10

18A 1 10 14 84 20

32A 2 25 34 204 50

63A 3 50 65 390 100

97A 4 used 60 77 462 125

97A 4 used 75 96 576 150

4 100 124 744 200

5 used 125 156 936 250

5 used 150 180 1260 300

5 used 200 240 1680 400

5 250 302 2416 500

6 400 477 3816 800

3 phase 480v 1000v hp ampacity FLA comparisons

Potential Maximum

1000V Current FLA

Rating

Potential 1000V

Locked Rotor Rating

3.1 18

7.7 46

13.6 82

34.0 204

67.9 408

80.2 481

96.2 577

121.6 729

151.9 912

182.3 1276

243.1 1702

303.9 2431

486.2 3890


A #18 CU/#17 AL will carry up to a 4 hp 1000 V motor


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2307 of 5603 11/18/2014 2:46 PM

Public Input No. 2639-NFPA 70-2014 [ Section No. 430.12(A) ]

(A) Material.

Where motors are provided with terminal housings, the housings shall be of metal and of substantialconstruction.

Exception: In other than hazardous (classified) locations, substantial, nonmetallic, noncombustiblehousings shall be permitted, provided an internal grounding bonding means between the motor frameand the equipment grounding bonding connection is incorporated within the housing.






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2308 of 5603 11/18/2014 2:46 PM

Public Input No. 2640-NFPA 70-2014 [ Section No. 430.12(E) ]

(E) Equipment Grounding Bonding Connections.

A means for attachment of an equipment grounding bonding conductor termination in accordance with250.8 shall be provided at motor terminal housings for wire-to-wire connections or fixed terminalconnections. The means for such connections shall be permitted to be located either inside or outside themotor terminal housing.

Exception: Where a motor is installed as a part of factory-wired equipment that is required to begrounded bonded and without additional connection being required at the motor terminal housing duringequipment installation, a separate means for motor grounding bonding at the motor terminal housingshall not be required.






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2309 of 5603 11/18/2014 2:46 PM

Public Input No. 489-NFPA 70-2014 [ Section No. 430.22(F) ]

(F) Separate Terminal Enclosure.

The conductors between a stationary motor rated 1 hp or less and the separate terminal enclosure permittedin 430.245(B) shall be permitted to be smaller than 14 AWG but not smaller than 18 AWG, provided theyhave an ampacity as specified in 430.22(A) .


Reference outdated as of the 2008 edition




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4639 of 5603 11/18/2014 2:46 PM

Public Input No. 1357-NFPA 70-2014 [ Section No. 430.22(G) ]

(G) Conductors for Small Motors.

Conductors for small motors shall not be smaller than 14 AWG unless otherwise permitted in 430.22(G)(1)or (G)(2).

(1) 18 AWG Copper.

Where 18 AWG individual copper conductors installed in a cabinet or enclosure , 18 AWG individual copperconductors , copper conductors that are part of a jacketed multiconductor cable assembly, or copperconductors in a flexible cord shall be permitted, under either of the following sets of conditions:

(1) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A) (1), of greaterthan 3.5 amperes, and less than or equal to 5 amperes, and all the following conditions are met:

(2) The circuit is protected in accordance with 430.52 .

(3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordancewith 430.32.

(4) Overcurrent protection is provided in accordance with 240.4(D) (1)(2).

(5) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A) (1), of 3.5amperes or less, and all the following conditions are met:


(7) The circuit is provided with maximum Class 20 overload protection in accordance with 430.32.


(2) 16 AWG Copper.

Where 16 AWG individual copper conductors installed in a cabinet or enclosure , 16 AWG individual copperconductors , copper conductors that are part of a jacketed multiconductor cable assembly, or copperconductors in a flexible cord shall be permitted under either of the following sets of conditions:



(3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordancewith 430.32 .




(7) The circuit is provided with maximum Class 20 overload protection in accordance with 430.32 .



The present language limits use of all 16AWG or 18AWG conductors for motor circuits to within an enclosure. This is inconsistent with the original intent to align with NFPA 79 permissions and effectively makes the clause unusable for motor circuits, since motors are typically not located within the enclosure with the motor controller. The revised language aligns with NFPA 79 language that restricts individual conductors to enclosures, but permits multiconductor cables and cords to be used for field wiring.



2310 of 5603 11/18/2014 2:46 PM

Submitter Full Name: VINCE BACLAWSKI

Organization: NEMA

Street Address:

City:

State:

Zip:

Submittal Date: Fri Sep 19 14:54:46 EDT 2014


2311 of 5603 11/18/2014 2:46 PM

Public Input No. 4295-NFPA 70-2014 [ Section No. 430.22(G) ]

(G) Conductors for Small Motors.

Conductors for small motors shall not be smaller than 14 AWG for less than 250V nominal and not less than#18 awg for 251 to 1000v nominal unless otherwise permitted in 430.22(G)(1) or (G)(2).

(1) 18 AWG Copper/alunimum/cu/al clad/or equal .

Where installed in a cabinet or enclosure, 18 AWG individual copper conductors, copper conductors that arepart of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permitted,or equivalent, under either of the following sets of conditions:



(3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordancewith 430.32.




(7) The circuit is provided with maximum Class 20 overload protection in accordance with 430.32.


(2) 16 AWG Copper./alunimum/cu/al clad or equivalent

Where installed in a cabinet or enclosure, 16 AWG individual copper conductors, copper conductors that arepart of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permittedor equvalent under either of the following sets of conditions:



(3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordancewith 430.32 .




(7) The circuit is provided with maximum Class 20 overload protection in accordance with 430.32 .




18_9_al_amp_tables.xlsx small wire ampacities


for small 1000v motors we need smaller cables and we need al or cu/al clads or other cable material types lie tin/silver/gold/ or other clads


2312 of 5603 11/18/2014 2:46 PM


Copper

Stranded

AWG

Aluminum

Solid <11

AWG mm2 Area

tested maximum

Ampacities

at 90° C

Amps

at 60° C

Amps

at 75° C

Amps

at 90° C

18 0.823 14 6 7 7

17 1.04 14 6 7 7

16 1.31 18 8 10 10

15 1.65 18 8 10 10

14 2.08 25 15 20 25

13 2.62 22 15 20 20

12 3.31 30 20 25 30

11 4.17 28 20 25 25

10 5.26 40 30 35 40

9 6.63 38 25 30 35

8 8.37 55 40 50 55

7 10.5 54 40 45 50





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2313 of 5603 11/18/2014 2:46 PM


430.26 Feeder Demand Factor.

Where reduced heating of the conductors results from motors operating on duty-cycle, intermittently, or fromall motors not operating at one time, the authority having jurisdiction may grant permission for feederconductors to it shall be permitted to have an ampacity less than specified in 430.24, provided theconductors have sufficient ampacity for the maximum load determined in accordance with the sizes andnumber of motors supplied and the character of their loads and duties as determined by a licensedprofessional engineer .

Informational Note: Demand factors determined in the design of new facilities can often be validatedagainst actual historical experience from similar installations. Refer to ANSI/IEEE Std. 141, IEEERecommended Practice for Electric Power Distribution for Industrial Plants, and ANSI/IEEE Std.241, Recommended Practice for Electric Power Systems in Commercial Buildings, for informationon the calculation of loads and demand factor.


In industrial facilities it is common proactice to size motor control center feeders based on a demand factor and the AHJ, if present, does not have the expertiese to approve this.


Submitter Full Name: Billy Breitkreutz

Organization: Fluor Corporation

Affilliation: Self

Street Address:

City:

State:

Zip:

Submittal Date: Wed Jun 18 11:43:33 EDT 2014


4640 of 5603 11/18/2014 2:46 PM


430.26 Feeder Demand Factor.

Where reduced heating of the conductors results from motors operating on duty-cycle, intermittently, or fromall motors not operating at one time, the authority having jurisdiction may grant permission for feederconductors to have an ampacity less than specified in 430.24, provided the conductors have sufficientampacity for the maximum load determined in accordance with the sizes and number of motors supplied andthe character of their loads and duties.

Informational Note:

Demand

Demand factors determined in the design of new facilities can often be validated against actual historicalexperience from similar installations.

Refer

Refer to the ANSI/

IEEE Std. 141, IEEE Recommended Practice for Electric Power Distribution for Industrial Plants, andANSI/IEEE Std. 241, Recommended Practice for Electric Power Systems in Commercial Buildings, for

IEEE Std. 3001.X series of documents for information on the calculation of loads and demand factor inindustrial and commercial buildings .


ANSI/IEEE 141 and 241 will be replaced with guidance that will appear in the P3001-series of documents. The 3001.X - series of documents draw from the elements of the existing Gray (241) and Red (141) Books. Benefits of the project include, but are not limited to:

1) the elimination of duplicate material that now exists in the various color books,

2) the speeding up of the revision process by allowing Color Book content to be reviewed, edited and balloted in smaller segments

3) to accommodate more modern, efficient and cost effective physical publishing/distribution methodologies (i.e., the elimination of large and expensive to produce books).

This recommended practice is likely to be of greatest value to the power-oriented engineer with limited experience with such requirements. It can also be an aid to all engineers responsible for the electrical design of industrial and commercial power systems. We recommend that the reference to be the entire 3001.X suite because of the way the subject has been broken up into the so called “dot-series” shown below:

3001.1 Recommended Practice for the Planning of Industrial and Commercial Power Systems

3001.2 Recommended Practice for Evaluating the Electrical Service Requirements of Industrial and Commercial Power Systems

3001.3 Recommended Practice for the Design of Industrial and Commercial Power Systems

3001.4 Recommended Practice for Estimating the Costs of Industrial and Commercial Power Systems

3001.5 Recommended Practice for the Application of Power Distribution Apparatus in Industrial and Commercial Power Systems

3001.6 Recommended Practice for the Expansion, Modernization, and Rehabilitation of Industrial and Commercial Power Systems

3001.7 Recommended Practice for the Application of Communication and Signaling Systems used in Industrial and Commercial Power Systems

3001.8 Recommended Practice for the Instrumentation and Metering of Industrial and Commercial Power Systems


2314 of 5603 11/18/2014 2:46 PM

3001.9 Recommended Practice for the Lighting of Industrial and Commercial Facilities

3001.10 Recommended Practice for Electric Space Conditioning of Industrial and Commercial Facilities

3001.11 Recommended Practice for the Application of Controllers and Automation to Industrial and Commercial Power Systems

A copy of these document will be made available to this committee through the IEEE Standards Association. The website for this documents development may be accessed at this link:

http://standards.ieee.org/findstds/3000stds/index.html


Submitter FullName:

Michael Anthony


Affilliation:IEEE I&CPS Education and Healthcare Facility ElectrotechnologyCommittee

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2315 of 5603 11/18/2014 2:46 PM


430.28 Feeder Taps.

Feeder tap conductors shall have an ampacity not less than that required by Part II, shall terminate in abranch-circuit protective device, and, in addition, shall meet one of the following requirements:

(1) Be enclosed either by an enclosed controller or by a raceway, be not more than 3.0 m (10 ft) in length,and, for field installation, be protected by an overcurrent device on the line side of the tap conductor,the rating or setting of which shall not exceed 1000 percent of the tap conductor ampacity

(2) Have an ampacity of at least one-third that of the feeder conductors, be suitably protected fromphysical damage or enclosed in a raceway, and be not more than 7.5 m (25 ft) in length

(3) Have an ampacity not less than the feeder conductors

Exception: Feeder taps over 7.5 m (25 ft) long. In high-bay manufacturing buildings [over 11 m (35 ft)high at walls], where conditions of maintenance and supervision ensure that only qualified personsservice the systems, conductors tapped to a feeder shall be permitted to be not over 7.5 m (25 ft) longhorizontally and not over 30.0 m (100 ft) in total length where all of the following conditions are met:

(1) The ampacity of the tap conductors is not less than one-third that of the feeder conductors.

(2) The tap conductors terminate with a single circuit breaker or a single set of fuses complying with(1) Part IV, where the load-side conductors are a branch circuit, or (2) Part V, where the load-sideconductors are a feeder.

(3) The tap conductors are suitably protected from physical damage and are installed in raceways.

(4) The tap conductors are continuous from end-to-end and contain no splices.

(5) The tap conductors shall be 6 AWG copper or 4 AWG aluminum or larger for 250v or less nominaland a minimum of #10cu/#9al for 251 to 1000v nominal .

(6) The tap conductors shall not penetrate walls, floors, or ceilings.

(7) The tap shall not be made less than 9.0 m (30 ft) from the floor.


As we transition to higher voltages we need to get smaller cables with lower fla values




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2316 of 5603 11/18/2014 2:46 PM

Public Input No. 1354-NFPA 70-2014 [ Section No. 430.53(D) ]

(D) Single Motor Taps.

For group installations described above, the conductors of any tap supplying a single motor shall not berequired to have an individual branch-circuit short-circuit and ground-fault protective device, provided theycomply with one of the following:

(1) No conductor to the motor shall have an ampacity less than that of the branch-circuit conductors.

(2) No conductor to the motor shall have an ampacity less than one-third that of the branch-circuitconductors, with a minimum in accordance with 430.22. The conductors from the point of the tap to themotor overload device shall be not more than 7.5 m (25 ft) long and be protected from physicaldamage by being enclosed in an approved raceway or by use of other approved means.

(3) Conductors from the point of the tap from the branch - circuit short-circuit and ground-faultprotective device to a listed manual motor controller additionally marked “Suitable for Tap ConductorProtection in Group Installations,” or to a branch-circuit protective device, shall be permitted to have anampacity not less than one-tenth the rating or setting of the branch-circuit short-circuit and ground-faultprotective device. The conductors from the controller to the motor shall have an ampacity in accordancewith 430.22. The conductors from the point of the tap to the controller(s) shall (1) be suitably protectedfrom physical damage and enclosed either by an enclosed controller or by a raceway and be not morethan 3 m (10 ft) long or (2) have an ampacity not less than that of the branch-circuit conductors.


In the 2014 NEC, a revision to the third sentence replaced “the branch-circuit short-circuit and ground-fault protective device” with “the point of the tap” (2013 ROP 11-36b Log #3511). But, the first sentence still uses “branch-circuit short-circuit and ground-fault protective device”. This change makes the wording consistent for these sentences.



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2318 of 5603 11/18/2014 2:46 PM

Public Input No. 1355-NFPA 70-2014 [ New Section after 430.53(D) ]

430.53(D)(4) Conductors from the point of the tap from the branch circuit to a listed manual motorcontroller additionally marked “Suitable for Tap Conductor Protection in Group Installations,” or toa branch-circuit protective device, shall be permitted to have an ampacity not less than one-thirdthat of the branch-circuit conductors. The conductors from the controller to the motor shall havean ampacity in accordance with 430.22. The conductors from the point of the tap to thecontroller(s) shall (1) be suitably protected from physical damage and enclosed either by anenclosed controller or by a raceway and be not more than 7.5 m (25 ft) long or (2) have an ampacitynot less than that of the branch-circuit conductors.


The existing 430.53(D)(3) rule limits the maximum length of reduced-ampacity tap conductors to only 10 feet. This limit applies in all reduced-ampacity applications, even those where the one-tenth reduction is not necessary. The proposed rule increases this maximum length to 25 feet by modifying 430.53(D)(3) with the 430.28(2) one-third ampacity-reduction requirements.



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2317 of 5603 11/18/2014 2:46 PM

Public Input No. 4299-NFPA 70-2014 [ Section No. 430.72(B)(2) ]

(2) Branch-Circuit Overcurrent Protective Device.

Conductors shall be permitted to be protected by the motor branch-circuit short-circuit and ground-faultprotective device and shall require only short-circuit and ground-fault protection. Where the conductors donot extend beyond the motor control equipment enclosure, the rating of the protective device(s) shall notexceed the value specified in Column B of Table 430.72(B) . Where the conductors extend beyond the motorcontrol equipment enclosure, the rating of the protective device(s) shall not exceed the value specified inColumn C of Table 430.72(B) .

Table 430.72(B) Maximum Rating of Overcurrent Protective Device in Amperes

Column A SeparateProtection

Provided

Protection Provided by Motor Branch-CircuitProtective Device(s)

Column B

Conductors Within

Enclosure

Column C ConductorsExtend Beyond

Enclosure

ControlCircuitConductorSize (AWG)

CopperAluminum orCopper-Clad

AluminumCopper

Aluminum orCopper-Clad

AluminumCopper

Aluminum orCopper-Clad

Aluminum

18/17 7 — 7 25 — 20 7 — 7

16/15 10 — 10 40 — 35 10 — 10

14 (Note 1) — /13 20 15 100 — 75 45 — 25

12/11 (Note 1) (Note 1) 120 100 60 45

10/9 (Note 1) (Note 1) 160 140 90 75

Larger than10

(Note 1) (Note 1) (Note 2) (Note 2) (Note 3) (Note 3)

Notes:

1. Value specified in 310.15 as applicable.

2. 400 percent of value specified in Table 310.15(B)(17) for 60°C conductors.

3. 300 percent of value specified in Table 310.15(B)(16) for 60°C conductors.


As discussed in other sections with 1000v the alunimum needs to come back and we need smaller wires




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2319 of 5603 11/18/2014 2:46 PM

Public Input No. 1585-NFPA 70-2014 [ Section No. 430.72(C)(4) ]

(4) Primary Less Than 2 12 Amperes.

Where the control circuit transformer rated primary current is less than 2 amperes, an overcurrent devicerated or set 12 amperes, the transformer shall be operated from a circuit protected by either a circuitbreaker or branch circuit type fuse rated at not more than 500 percent of the rated primary current shall bepermitted in the primary circuit. 15 amperes. Minimum conductor size from the breaker or fuse shall berated for 15 amperes. The transformer shall have secondary protection per Table 450.3(B).


From UL Standard 891, 8.6.6.8.1. "An instrument, pilot light, transformer with a primary rating of 12 A or less, or other switchboard device having a potential coil shall be operated from a circuit protected by either a circuit breaker or branch circuit type fuse rated at not more than 15 A."

A transformer in a motor control circuit or motor control panel is serving a similar purpose to a transformer in a switchboard. The transformer in the motor control circuit is no less protected than the transformer in the switchboard. The primary protective device in either case serves to provide short-circuit protection. Overload protection is provided by the overcurrent protective device on the transformer's secondary.




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2320 of 5603 11/18/2014 2:46 PM


(A) Stationary Motor of 1⁄8 Horsepower or Less.

For a stationary motor rated at 1⁄8 hp or less that is normally left running and is constructed so that it cannotbe damaged by overload or failure to start, such as clock motors and the like, the branch-circuitdisconnecting means or a listed in-line connector located adjacent to the motor shall be permitted to serveas the controller.


Motors and motor controllers 1/8 of a horsepower or less are not subject to the same high in-rush currents as larger motors, however they do not have the ability to use smaller listed disconnecting devices such as the in- line connector, which in most cases could be installed adjacent to the small motor enhancing safety by having the disconnect within sight. Making this disconnect more apt to be used and facilitate easy replacement. These device come in many styles including, wet,touch safe and mating features.


Submitter Full Name: Alfio Torrisi

Organization: Master electrician

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2321 of 5603 11/18/2014 2:46 PM

Public Input No. 2058-NFPA 70-2014 [ Section No. 430.83(C) ]

(C) Stationary Motors of 2 Horsepower or Less.

For stationary motors rated at 2 hp or less and 300 actual volts or less, the controller shall be permitted tobe either of the following:

(1) A general-use switch having an ampere rating not less than twice the full-load current rating of themotor

(2) On ac circuits, a general-use snap switch suitable only for use on ac (not general-use ac–dc snapswitches) where the motor full-load current rating is not more than 80 percent of the ampere rating ofthe switch








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430.87 Number of Motors Served by Each Controller.

Each motor shall be provided with an individual controller.

Exception No. 1: For motors rated 1000 volts or less, a single controller rated at not less than theequivalent horsepower, as determined in accordance with 430.110(C) (1), of all the motors in the groupshall be permitted to serve the group under any of the following conditions:

(a) Where a number of motors drive several parts of a single machine or piece of apparatus, such asmetal and woodworking machines, cranes, hoists, and similar apparatus

(b) Where a group of motors is under the protection of one overcurrent device as permitted in430.53(A)

(c) Where a group of motors is located in a single room within sight from the controller location

Exception No. 2: A branch-circuit disconnecting means serving as the controller as allowed in 430.81(A)shall be permitted to serve more than one motor.


NEC_StyleManual_2011.pdf: 3.3.4 Word Clarity. Words and terms used in the NEC shall be specific and clear in meaning, and shall avoid jargon, trade terminology, industry-specific terms, or colloquial language that is difficult to understand. NEC language shall be brief, clear, and emphatic. The following are examples of old-fashioned expressions and word uses that shall not be permitted:"as allowed"



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430.92 91 General.

Part VIII covers motor control centers installed for the control of motors, lighting, and power circuits.

430.92 Locations. Motor control centers and controllers shall be capable of being reached for operation,renewal, or inspections without damaging the building structure or finish or not permanently closed in by thestructure or finish of the building.


This Public Input is addressing a common question that is asked during code related and inspector meetings. 430.102 is clear on the locations of the disconnects, however the requirements for the controllers location is not. The requirements of 404.8 may be justified since a Controller is defined as a switch in 430.2. However, 404.8 may be over restrictive since it states that switches are required to be "Readily Accessible". Readily Accessible is defined in Article 100 and would prohibit controllers to be installed inside a enclosure with a screw down cover.

The Public Input utilizes language from Article 100 from both Accessible (as applied to equipment) and Accessible (as applied to a wiring method) to define the location for a Motor Control Center and Controllers.


Submitter Full Name: David Kendall

Organization: Thomas & Betts Corporation

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Submittal Date: Thu Sep 04 12:05:41 EDT 2014


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430.93 Short-Circuit Current Rating

Motor control centers ahsll not be installed where the available fault current exceeds the short-circuit currentrating as marked in accordance with 430.98.


430.98 requires that the equipment short-circuit current rating be marked on the motor control center. This proposal specifically requires that the MCC not be installed where the available fault current exceeds its short-circuit current rating. This proposed requirement is similar to 670.5 (industrial machinery) and 409.22 (industrial control panels).




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2324 of 5603 11/18/2014 2:46 PM

Public Input No. 2643-NFPA 70-2014 [ Sections 430.95, 430.96 ]

Sections 430.95, 430.96

430.95 Service Equipment.

Where used as service equipment, each motor control center shall be provided with a single maindisconnecting means to disconnect all ungrounded service conductors.

Exception: A second service disconnect shall be permitted to supply additional equipment.

Where a grounded conductor is provided, the motor control center shall be provided with a main bondingjumper, sized in accordance with 250.28(D) , within one of the sections for connecting the groundedconductor, on its supply side, to the motor control center equipment ground bond bus.

Exception: High-impedance grounded neutral systems shall be permitted to be connected as provided in250.36.


Multisection motor control centers shall be connected together with an equipment grounding bondingconductor or an equivalent equipment grounding bonding bus sized in accordance with Table 250.122.Equipment grounding bonding conductors shall be connected to this equipment grounding bonding bus or toa grounding bonding termination point provided in a single-section motor control center.






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2327 of 5603 11/18/2014 2:46 PM

Public Input No. 4302-NFPA 70-2014 [ Sections 430.97(D), 430.97(E) ]

Sections 430.97(D), 430.97(E)

(D) Spacings.

Spacings between motor control center bus terminals and other bare metal parts shall not be less thanspecified in Table 430.97(D) .

(E) Barriers.

Barriers shall be placed in all service-entrance motor control centers to isolate service busbars and terminalsfrom the remainder of the motor control center.

Table 430.97(D) Minimum Spacing Between Bare Metal Parts

Nominal Voltage

Opposite Polarity WhereMounted on the Same Surface

Opposite PolarityWhere Held Free in Air

Live Parts toGround

mm in. mm in. mm in.

Not over 125 volts,nominal

19.1 3⁄4 12.7 1⁄2 12.7 1⁄2

Not over 250 volts,nominal

31.8 1 1⁄4 19.1 3⁄4 12.7 1⁄2

Not over 600volts 1000 volts , nominal

50.8 2 25.4 1 25.4 1


this section needs to coordinate with others for 1000v equipment terminations bending spacing and seperation for small wires




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(C) Work Space Warning Signs

Working space for motor control centers shall be marked with a sign or plaque in accordance withsection 110.21(B), to indicate the work spaces required to be kept clear by sections 110.26(A) or110.32 as applicable. The sign or plaque shall be located so as to be clearly visible to people in theworkspace and shall be permitted to be on or adjacent to the equipment. The marking shall includethe words:

WARNING!

AREA IN FRONT OF ELECTRICAL EQUIPMENT

SHALL BE KEPT CLEAR

FOR- _____DEPTH_-______WIDTH-_____ HEIGHT.

The marking shall also include the dimensions of the depth, width, and height required to be keptclear for the work space. It shall be permitted to use one sign for multiple pieces of equipment aslong as the sign is visible from the work space for each piece of equipment


I am continually being forced to work on panelboards , switchboards and motor control centers that were originally installed with plenty of work space, but over time have had the work space encroached upon by other trades or unknowing individuals who install shelves, pipes, ductwork, walls, and all kinds of other obstructions too close to the electrical equipment. This places me and every other electrical worker in peril if I need to work on the equipment while energized. There is a great increase in danger from an arc-flash injury or a shock when working on an energized motor control center if the work space has been compromised. I have surveyed HUNDREDS of students that attend my classes and seminars and they all agree that they have also been put into this dangerous situation. Members of the Code Making Panel themselves may have worked in these situations. This is NOT just an enforcement issue, but also a rather immediately DANGEROUS situation if the equipment is unreachable in an emergency, such as firefighters, or other emergency personnel (or anyone else for that matter) needing to turn the power off because of an emergency!!!!!

They certainly cannot wait for the wire inspector to show up and “enforce” the code. It will be too late by that time. But maybe, just maybe the plumber won’t put the pipe in the way, or the carpenter won’t build the wall too close, or the shop owner won’t install shelves right in front of the MCC if there were a sign to warn them! It’s certainly not a guarantee, but if the warning sign were to prevent ONE tragedy, then making this a requirement will certainly be worth it. These signs are already available for just a few dollars. Well worth the minimal cost. The wording in my proposal also allows for the sign to be placed on a wall or perhaps on the door to the electrical room, as long as the sign is clearly visible to anyone standing in the workspace thinking of putting an obstruction in front of the electrical panel. I believe a warning sign WOULD help. Just as an Arc-Flash warning sign is INTENDED to help, but does not guarantee the electrician will heed the warning. Signs, markings, and plaques are required in several sections of the Code such as 110.16, 110.27(C), 110.34(C), 210.5(C)(3), 215.12(C), 225.37, 225.70(A)(1), 230.2(E), 250.21(C), 426.13, 427.13, 450.8(D), 450.14, 460.24(B)(2), 490.22, 516.10(A)(8), 516.10(B)(3), 550.32(A)(7), 550.32(G), 690.7(E)(3), 690.14(D)(4), 690.31(E)(3), 690.56(A), 690.56(B), 692.4(B), 692.9(C), 700.7(B), 701.7(B), 702.7(B), and 705.10. None of these signs guarantee safety, they can only help improve it. If you check each of those sections, I think you will agree that the sign or plaque that I am proposing is at least equal in importance to any of the other signs required by Code and perhaps MORE important than others.



Public Input No. 153-NFPA 70-2014 [New Section after 408.18] working space clearances


Submitter Full Name: RUSS LEBLANC

Organization: EC AND M MAGAZINE

Street Address:


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Submittal Date: Sun Feb 02 18:13:29 EST 2014


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Type your content here ... 430.99 Available Fault Current. Motor Control Centers shall be legiblymarked in the field with the maximum available fault current. The field marking(s) shall include the date thefault-current calculation was performed and be of sufficient durability to withstand the environment involved.


430.98 requires that the MCC be marked with its short-circuit current rating. This proposal provides the AHJ with the available short-circuit current so that he or she can compare it to the marked short-circuit current rating that is marked on the MCC.



Organization: City of Phoenix, AZ

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(A) Motor Control Centers.

(1) Motor control centers shall be marked according to 110.21, and the marking shall be plainly visible afterinstallation. Marking shall also include common power bus current rating and motor control center short-circuit rating.

(2) Motor control centers shall be legibly marked in the field with the maximum available fault current. Thefield marking(s) shall include the date the fault-current calculation was performed and be of sufficientdurability to withstand the environment.


This proposal provides the AHJ with the available fault current so that it can be compared to the marked short-circuit current rating on the MCC.




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2330 of 5603 11/18/2014 2:46 PM

Public Input No. 4440-NFPA 70-2014 [ New Part after IX. ]



430.100 Short-Circuit Current Rating. Motor Control Centers shall not be installed where the available faultcurrent exceeds its short-circuit current rating as marked in accordance with 430.98.


430.98 requires that the equipment short-circuit current rating be marked on the motor control center. This proposal specifically requires that the MCC not be installed where the available short-circuit current exceeds the marked short-circuit current rating. This proposed requirement is similar to 670.5 (industrial machinery) and 409.22 (industrial control panels).




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Public Input No. 1734-NFPA 70-2014 [ Section No. 430.102(B)(2) ]

(2) Controller Disconnect.

The controller disconnecting means required in accordance with 430.102(A) shall be permitted to serve asthe disconnecting means for the motor if it is in sight from the motor location and the driven machinerylocation.

Exception to (1) and (2): The disconnecting means for the motor shall not be required under eithercondition (a) or condition (b), which follow, provided that the controller disconnecting means required in430.102(A) is lockable in accordance with 110.25.

(a) Where such a location of the disconnecting means for the motor is impracticable or introducesadditional or increased hazards to persons or property

Informational Note: Some examples of increased or additional hazards include, but are notlimited to, motors rated in excess of 100 hp, multimotor equipment, submersible motors,motors associated with adjustable speed drives, and motors located in hazardous(classified) locations.

(b) In industrial installations, with written safety procedures, where conditions of maintenance andsupervision ensure that only qualified persons service the equipment

Informational Note: For information on lockout/tagout procedures, see NFPA 70E -2012, Standardfor Electrical Safety in the Workplace .

Delete condition (b).


The Code is about the practical safeguarding of people and property from the hazards of electricity. There is nothing practical about the safeguarding of people when the disconnect is not required to be insight. The inspector can only go by the Code for the inspection and in a new installation there will not be safety procedures in place, or they should not be required to track down the documentation. The industrial entity can say that only qualified persons are going to work on it, but in reality, if it needs fixing, somebody is going to do it -- qualified or not.


Submitter Full Name: ROGER ZIEG

Organization: ZIEG ELEC

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Public Input No. 2254-NFPA 70-2014 [ New Section after 430.102(B)(2) ]

(3) Motor Stop Control

Where a disconnecting means for the motor is not in sight from the driven machinery location, a stop controldevice that can reliably stop the motor shall be located in sight from the driven machinery location wherepracticable.


The motor disconnecting means has two safety functions: (1) a means for de-energizing the motor for maintenance; and (2) a means for stopping the motor immediately in an emergency. I agree with the exceptions in this section that allow the disconnecting equipment for function 1 to be remotely located. I believe that it is unsafe for function 2 to be remotely located, and that a stop control device (such as an emergency stop pushbutton switch) should be located at the equipment when the disconnecting means is remotely located. The “where practicable” is intended to exempt well pumps and similar inaccessible equipment.


Submitter Full Name: JEFF GOLDSMITH

Organization: Seven Seas Water

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430.103 Operation.

The disconnecting means shall open all ungrounded supply conductors and shall be designed so that no polecan be operated independently. The disconnecting means shall be permitted in the same enclosure with thecontroller provided the feeder(s) or branch circuit(s) enter the controller as close as practicable to theinternal disconnect . The disconnecting means shall be designed so that it cannot be closed automatically.

Informational Note: See 430.113 for equipment receiving energy from more than one source.


Substantiation; The general requirement for controllers per 430.102 is to have a disconnect ahead of all controllers for the ability to service the controller with no shock hazard present. NEC 430.103 offers the allowance to have the required disconnect inside the controller. This relaxation of the code is often taken advantage of especially with many controllers having a factory integral disconnect. The consequence is that there is no guide or restrictions as to where the circuit(s) can enter the controller which often finds the wiring on the line side of the disconnect hidden in a plastic cable tray (panduit) with other control wiring, thus giving technicians a false sense of security after the disconnect has been opened. In 2014 NEC 600.6(A)(1)CMP 16 took safeguarding steps in requiring that a disconnect for a sign shall be at the point of entry where the circuits enter. To mirror this change would be prudent. Controllers are often commissioned while energized but also serviced while de-energized such as checking for continuity and installing replacement parts. From my experience as a inspector for 14 years and a commercial installer for over 10 this requirement would not be a unnecessary hardship of any kind to the installer. Thus making your decision one that adds safety (upside) without being over-restrictive (no down side). Thank you for considering this “input”


Submitter Full Name: james dorsey

Organization: Douglas County Building Department, Douglas County CO

Affilliation: Employee, Electrical Inspector

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(B) Stationary Motors of 1⁄8 Horsepower or Less.

For stationary motors of 1⁄8 hp or less, the branch-circuit overcurrent device or a listed in-lineconnector located adjacent to the motor shall be permitted to serve as the disconnecting means.


Motors 1/8 of a horsepower or less are not subject to the same high in-rush currents as larger motors, however they do not have the ability to use smaller listed disconnecting devices such as the in- line connector, which in most cases could be installed adjacent to the small motor, making this disconnect more apt to be used and facilitate easy replacement. These device come in many styles including, wet,touch safe and mating features


Submitter Full Name: Alfio Torrisi

Organization: Master Electrician

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Submittal Date: Wed Oct 29 14:42:16 EDT 2014


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Public Input No. 2051-NFPA 70-2014 [ Section No. 430.109(C) ]

(C) Stationary Motors of 2 Horsepower or Less.

For stationary motors rated at 2 hp or less and 300 actual volts or less, the disconnecting means shall bepermitted to be one of the devices specified in (1), (2), or (3):

(1) A general-use switch having an ampere rating not less than twice the full-load current rating of themotor

(2) On ac circuits, a general-use snap switch suitable only for use on ac (not general-use ac–dc snapswitches) where the motor full-load current rating is not more than 80 percent of the ampere rating ofthe switch

(3) A listed manual motor controller having a horsepower rating not less than the rating of the motor andmarked “Suitable as Motor Disconnect”








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Public Input No. 4765-NFPA 70-2014 [ Annex B ]

Informative Annex B Application Information for Ampacity Calculation

This informative annex is not a part of the requirements of this NFPA document but is included forinformational purposes only.

310.15(D) Ampacity Calculation Information and Conductors installed underground

(1) Equation Application Information.

This informative annex provides application information for ampacities calculated under engineeringsupervision Section 310.15(D) provides ampacity calculation information and conductor installationrequirements for conductors installed underground .

(2) Typical Applications Covered by Tables.

Typical ampacities for conductors rated 0 through 2000 volts are shown in Table B.310.15(B)(2)(1) throughTable B.310.15(B)(2)(10) . Table B.310.15(B)(2)(11) provides the adjustment factors for more than threecurrent-carrying conductors in a raceway or cable with load diversity. Underground electrical duct bankconfigurations, as detailed in Figure B.310.15(B)(2)(3) , Figure B.310.15(B)(2)(4) , and Figure B.310.15(B)(2)(5) , are utilized for conductors rated 0 through 5000 volts. In Figure B.310.15(B)(2)(2) through FigureB.310.15(B)(2)(5) , where adjacent duct banks are used, a separation of 1.5 m (5 ft) between the centerlinesof the closest ducts in each bank or 1.2 m (4 ft) between the extremities of the concrete envelopes issufficient to prevent derating of the conductors due to mutual heating. These ampacities were calculated asdetailed in the basic ampacity paper, AIEE Paper 57-660, The Calculation of the Temperature Rise andLoad Capability of Cable Systems, by J. H. Neher and M. H. McGrath. For additional information concerningthe application of these ampacities, see IEEE/ICEA Standard S-135/P-46-426, Power Cable Ampacities,and IEEE Standard 835-1994, Standard Power Cable Ampacity Tables.

Typical values of thermal resistivity (Rho) are as follows:

Average soil (90 percent of USA) = 90

Concrete = 55

Damp soil (coastal areas, high water table) = 60

Paper insulation = 550

Polyethylene (PE) = 450

Polyvinyl chloride (PVC) = 650

Rubber and rubber-like = 500

Very dry soil (rocky or sandy) = 120

Thermal resistivity, as used in this informative annex, refers to the heat transfer capability through asubstance by conduction. It is the reciprocal of thermal conductivity and is normally expressed in the units°C-cm/watt. For additional information on determining soil thermal resistivity (Rho), see ANSI/IEEE Standard442-1996, Guide for Soil Thermal Resistivity Measurements.

(3) Criteria Modifications.

Where values of load factor and Rho are known for a particular electrical duct bank installation and they aredifferent from those shown in a specific table or figure, the ampacities shown in the table or figure can bemodified by the application of factors derived from the use of Figure B.310.15(B)(2)(1) .

Where two different ampacities apply to adjacent portions of a circuit, the higher ampacity can be usedbeyond the point of transition, a distance equal to 3 m (10 ft) or 10 percent of the circuit length calculated atthe higher ampacity, whichever is less.

Where the burial depth of direct burial or electrical duct bank circuits are modified from the values shown in afigure or table, ampacities can be modified as shown in (a) and (b) as follows.

(a) Where burial depths are increased in part(s) of an electrical duct run to avoid undergroundobstructions, no decrease in ampacity of the conductors is needed, provided the total length of parts ofthe duct run increased in depth to avoid obstructions is less than 25 percent of the total run length.

(b) Where burial depths are deeper than shown in a specific underground ampacity table or figure, anampacity derating factor of 6 percent per increased 300 mm (foot) of depth for all values of Rho can beutilized. No rating change is needed where the burial depth is decreased.

(4) Electrical Ducts.


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content xmlText

(F) Cord-and-Plug- or Fitting- Connected Motors.

For a cord-and-plug-connected motor, a fitting-connected motor, a horsepower-rated attachment plug andreceptacle, flanged a horse power-rated attachment fitting and receptacle, flanged surface inlet and cordconnector, attachment fitting having ratings no less than the motor or attachment plug and cord connectorhaving ratings no less than the motor ratings shall be permitted to serve as the disconnecting means.Horsepower-rated attachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shallnot be required for cord-and-plug-connected appliances in accordance with 422.33, room air conditioners inaccordance with 440.63, ceiling mounted (paddle) fans in accordance with 314.27(C) or portable motorsrated 1⁄3 hp or less.



SUBSTANTIATIONGrp3PI_3Final.pdf This for the SUSTANTIATION.


*** NFPA Staff Note: Substantial provided in uploaded file. ***



Public Input No. 4665-NFPA 70-2014 [Section No. 314.27]This modified text supports the newtechnology proposed.

Public Input No. 4667-NFPA 70-2014 [New Definition afterDefinition: Askarel.]

This new definition is in support of the newtechnology.


Submitter Full Name: MICHAEL FONTAINE

Organization: National Electrical Safety Group

Affilliation: Safety Quick Lighting and Fans Corp.

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Substantiation: This Public Input seeks to modify Section 430.109(F) to support modified Sections 314.27(A) and 314.27(C) that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI modifies Sections 314.27(A) and 314.27(C) to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 410.30(B) as well as another set to insert a new 406.16. There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new and modified NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this text to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in 314.27(A) and 314.27(C). The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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http://www.safetyquicklight.com/

combination works to minimize or eliminate risk associated with electrical shock and associated injuries, especially when the use of ladders and support of devices are involved, or when the utilization device itself needs to be worked on. Relevant Fatality and Injury Data. OSHA Data. In the OSHA electrocution training materials, an OSHA Fatal Fact is presented1 that details a union electrician’s death by electrocution during trouble shooting with lamps. If the technology was used, the lamps could’ve been disconnected and troubleshooting take place without the presence of electrical hazards. There is an OSHA Incident Report #0418800.2 Another OSHA Incident Report3 #1055320 summarizes a 2008 electrocution of an electrician while changing a light bulb. It is reasonable to conclude that this incident could have been avoided if the new technology receptacle/attachment fitting technology had been used. The fixture would’ve been disconnected and a new bulb would be inserted into the disconnected fixture with no access to electricity. In 2011, an electrician was electrocuted when the wires of a light fixture he was attempting to hang became stripped energizing the light fixture. As he grabbed one of the attached steel hanging cables, he received a fatal shock. OSHA Incident Report #0317700 was prepared.4 It is reasonable to conclude that this incident could have been avoided if the new technology receptacle/attachment fitting technology had been used because the fixture could not have become energized, as there would be no access to electricity through the disconnected fixture. CPSC Data. The CPSC estimates 4 electrocution deaths per year associated with lighting products.5 CPSC data from the National Electronic Injury Surveillance System (NEISS) database from 2009 to 2013 was analyzed. There were 38 incidents resulting in hospital emergency room visits involving the installation of light fixtures; 32 of those incidents involved falls and at least four of those incidents involved the victims being shocked. With the new technology, after the receptacle is installed in the ceiling, there is no additional wiring necessary, no weight or bulk of the fixture during the initial receptacle installation, and no shock hazard during the quick connect of the fixture. Without the weight/bulk, the falls may not have occurred. With the new technology receptacle in place, installation of the luminaire is a quick connect and no shock would have occurred.

1 Construction Focus Four: Electrocution Hazards, Instructor Guide. OSHA Training Institute, OSHA Directorate of Training and Education, April 2011. Document can be found online at https://www.osha.gov/dte/outreach/construction/focus_four/electrocution/electr_ig.pdf 2 OSHA Report ID: 0418800 can be found at https://www.osha.gov/pls/imis/establishment.inspection_detail?id=18396960 3 OSHA Report ID:1055320 can be found online at https://www.osha.gov/pls/imis/establishment.inspection_detail?id=312764335 4 OSHA Report ID: 0317700 can be found at https://www.osha.gov/pls/imis/establishment.inspection_detail?id=314163627 5 2004 Electrocutions Associated with Consumer Products, By Matthew V. Hnatov. Hazard Analysis Division, Directorate for Epidemiology, Consumer Products Safety Commission. April 2009

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https://www.osha.gov/dte/outreach/construction/focus_four/electrocution/electr_ig.pdf

https://www.osha.gov/pls/imis/establishment.inspection_detail?id=312764335

There were 418 incidents resulting in hospital emergency room visits involving changing light bulbs; 390 involved falls and at least six of those incidents involved the victims being shocked. Additionally, there were 9 additional incidents resulting in hospital emergency room visits associated with cleaning the light fixture; 8 of those involved falls. It is reasonable to conclude that many of these incidents could have been avoided or minimized if the new technology receptacle/attachment fitting technology had been used. The fixture is simply disconnected and any bulb or fixture maintenance or cleaning can be done on a table, not at an elevation, thereby reducing the time at an elevated level, thereby reducing the hazard. There were 55 incidents resulting in hospital emergency room visits involving a luminaire falling from the ceiling onto the victim. It is reasonable to conclude that many of these incidents could have been avoided or minimized if the receptacle/attachment fitting technology had been used. The new technology has redundant double locking mechanisms that each holds 200 lbs (although they would never hold more than 50 lb, the standard weight of a fixture), therefore the fixtures would not fall. NIOSH DATA. The National Institute for Occupational Safety and Health (NIOSH) conducts the Fatal Accident Circumstances and Epidemiology (FACE) Project. Data are collected from a sample of fatal accidents, including electrical-related fatalities. NIOSH FACE Report 88-376 summarized a 1988 electrocution of a Virginia electrician. He contacted an energized wire while attempting to install a floodlight on a new residential home. The initial wiring was complete and the electrician was wiring the fixture. The victim, using insulated wire strippers, began removing the insulation from the "14-2" standard house wiring (i.e., a cable containing two copper wires, size number 14) when his right thumb and right index finger contacted the uninsulated part of the wire stripper. The 110-volt circuit had not been de-energized at the panel box prior to the incident. The victim received an electrical shock and fell to the ground. It is reasonable to conclude that this incident might have been avoided if the new technology receptacle/attachment fitting technology had been used. It is likely that some of the electrician’s attention was diverted to the light as he was likely holding the light to connect it after the preparation of the wires. If the new technology were used, the receptacle would’ve already been installed, and the fixture would’ve simply been quick- connected with the receptacle and attachment fitting. If the new technology had been used, the electrocution could’ve been avoided. NIOSH FACE Report 87-557 summarized a 1987 electrocution of a North Carolina electrician. While repairing a fluorescent light fixture over a kitchen sink in a single-family residence, a 33-

6 NIOSH Face Reports 1982 to 2005 including 88-37 can be found at http://wwwn.cdc.gov/NIOSH-FACE/Default.cshtml?state=ALL&Incident_Year=ALL&Category2=0006&Submit=Submit#.VFjs8y7-DK0.email. This particular report can be located directly at http://www.cdc.gov/niosh/face/In-house/full8837.html 7 NIOSH Face Reports 1982 to 2005 including 87-55 can be found at http://wwwn.cdc.gov/NIOSH-FACE/Default.cshtml?state=ALL&Incident_Year=ALL&Category2=0006&Submit=Submit#.VFjs8y7-DK0.email. This particular report can be located directly at http://www.cdc.gov/niosh/face/In-house/full8755.html

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http://wwwn.cdc.gov/NIOSH-FACE/Default.cshtml?state=ALL&Incident_Year=ALL&Category2=0006&Submit=Submit%23.VFjs8y7-DK0.email




year-old journeyman electrician was electrocuted when he contacted an energized wire on the load side of the ballast (400 volts). The ballast had been replaced, however, he could not get the light to operate properly. The electrician was sitting on the sink when he apparently contacted an energized wire on the load side of the ballast. The circuit had not been de-energized at the panel box or at the single-pole switch on the wall beside the sink. It is reasonable to conclude that this incident might have been avoided if the new technology receptacle/attachment fitting technology had been used. The receptacle would’ve already been installed, and the fixture could’ve been taken down through a simple quick disconnect for examination. If the fixture was determined to be in working order, additional work could be completed with the fixture quick-disconnected and out of the vicinity so full attention could be given to the wiring. If the new technology had been used, the electrocution might have been avoided. Efficiency Improvements. The technology will increase not only electricians’ safety but efficiency in installation. The installation of luminaires and ceiling fans requires the simultaneous support of the heavy and bulky appliance while properly performing the connection of the wiring. During the installation, the electrician has to do the wiring while he or someone else is holding the bulky luminaire or fan. This is not the case with this new technology. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan with the attached plug is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. Wiring will no longer require the luminaire or fan to be held nearby, oftentimes while on a ladder. By removing the bulky luminaire or ceiling fan from the initial equation, safety and efficiency is increased.

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Mark Earley, PE Chief Electrical Engineer National Fire Protection Association (NFPA) 1 Batterymarch Park Quincy, MA 02169

November 5, 2014

We are happy to report that the Public Input submissions from Safety Quick Lighting and Fans Corp (SQL) for the A2016 revision cycle do not invoke the use of an essential patent claim (one whose use would be required for compliance with the NEC), and as such, we believe these submissions are in compliance with the NFPA ANSI Patent Policy. The SQL Public Input submissions do not result in any requirements being added to the NEC that would require the use of any technology, patented or otherwise. SQL wishes to ensure the Panel is aware that the example of this technology highlighted in the substantiation of the Public Input submissions from SQL is a patented design, however other manufacturers' designs could reasonably be expected to meet the safety requirements that SQL proposed for inclusion in the NEC. As such, there are no essential patent concerns.

With no essential patent concerns and even though not required, SQL wishes to advise the Panel and Correlating Committee that SQL is willing and open to share all of our patents relating to the power plug and receptacle with licensing agreements, complete with reasonable terms and conditions that are demonstrably free of any unfair discrimination. Sincerely,

Rani Kohen Chairman of the Board Safety Quick Lighting and Fans Corp.


(F) Cord-and-Plug- or Fittting- Connected Motors.

For a cord-and-plug-connected motor, a fitting-connecte motor, a horsepower-rated attachment fitting andreceptacle, a horsepower-rated attachment plug and receptacle, flanged surface inlet and cord connector,attachment fitting having ratings no less than the motor ratings or attachment plug and cord connector havingratings no less than the motor ratings shall be permitted to serve as the disconnecting means.Horsepower-rated attachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shallnot be required for cord-and-plug-connected appliances in accordance with 422.33, room air conditioners inaccordance with 440.63, ceiling mounted (paddle) fans in accordance with 410.30(B) or portable motorsrated 1⁄3 hp or less.



SUBSTANTIATIONGrp2PI_3Final.pdf This modified text supports the new technology proposed.





Public Input No. 4638-NFPA 70-2014 [New Section after410.30(A)]

This modified text supports the new technologyproposed.

Public Input No. 4638-NFPA 70-2014 [New Section after410.30(A)]





Street Address:

City:

State:

Zip:



2340 of 5603 11/18/2014 2:46 PM

Substantiation: This Public Input seeks to modify Section 430.109(F) to support proposed new Section 410.30(B) that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI creates a new Section 410.30(B) to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 314.27(C) as well as another set to insert a new 406.16. There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new and modified NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this new section to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in 410.30(B). The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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For a cord-and-plug-connected motor, a fitting-connected motor, a horsepower-rated attachment fitting andreceptacle, a horsepower-rated attachment plug and receptacle, flanged surface inlet and cord connector,attachment fitting having ratings no less than the motor or attachment plug and cord connector having ratingsno less than the motor ratings shall be permitted to serve as the disconnecting means. Horsepower-ratedattachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shall not be required forcord-and-plug-connected appliances in accordance with 422.33, room air conditioners in accordance with440.63, ceiling mounted (paddle) fans in accordance with 406.16 or portable motors rated 1⁄3 hp or less.



SUBSTANTIATIONGrp1PI_3Final.pdf This for the SUSTANTIATION.





Public Input No. 4614-NFPA 70-2014 [New Section after406.15]

This modified text supports the new technologyproposed.

Public Input No. 4623-NFPA 70-2014 [New Definition afterDefinition: Askarel.]

This definition was created in support of thenew technology.





Street Address:

City:

State:

Zip:



2339 of 5603 11/18/2014 2:46 PM

Substantiation: This Public Input seeks to modify Section 430.109(F) to support proposed new Section 406.16 that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI creates a new Section 406.16 to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 314.27(C) as well as another set to insert a new 410.30(B). There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this new section to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in Article 406. The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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For a cord-and-plug-connected motor, a fitting-connected motor, a horsepower-rated attachment plug andreceptacle, a horse power-rated attachment fitting and receptacle, flanged surface inlet and cord connector,attachment fitting having ratings no less than the motor or attachment plug and cord connector having ratingsno less than the motor ratings shall be permitted to serve as the disconnecting means. Horsepower-ratedattachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shall not be required forcord-and-plug-connected appliances in accordance with 422.33, room air conditioners in accordance with440.63, ceiling mounted (paddle) fans in accordance with 314.27(C) or portable motors rated 1⁄3 hp or less.



SUBSTANTIATIONGrp3PI_3Final.pdf This is the only file for the SUBSTANTIATION. Thank you.


***<NFPA STAFF - PLEASE SEE UPLOADED FILE FOR THE SUBSTANTIATION. THANK YOU>***



Public Input No. 4443-NFPA70-2014 [Section No. 314.27]

The revised text in 430.109(F) is to support modified Sections 314.27(A)and 314.27(C) proposed in PI#4443. The definition of Attachment Plug isalso created to support this new proposed section.

Public Input No. 4447-NFPA70-2014 [New Definition afterDefinition: Askarel.]

The revised text in 430.109(F) is to support modified Sections 314.27(A)and 314.27(C) proposed in PI#4443. The definition of Attachment Plug isalso created to support this new proposed section.

Public Input No. 4443-NFPA70-2014 [Section No. 314.27]


Submitter Full Name: AMY CRONIN

Organization: STRATEGIC CODE SOLUTIONS LLC


Street Address:

City:

State:

Zip:



2338 of 5603 11/18/2014 2:46 PM

Substantiation: This Public Input seeks to modify Section 430.109(F) to support modified Sections 314.27(A) and 314.27(C) that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI modifies Sections 314.27(A) and 314.27(C) to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 410.30(B) as well as another set to insert a new 406.16. There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new and modified NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this text to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in 314.27(A) and 314.27(C). The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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For a cord-and-plug-connected motor, a fitting-connected motor, a horsepower-rated attachment plug andreceptacle, a horse power-rated attachment fitting and receptacle, flanged surface inlet and cord connector,attachment fitting having ratings no less than the motor or attachment plug and cord connector having ratingsno less than the motor ratings shall be permitted to serve as the disconnecting means. Horsepower-ratedattachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shall not be required forcord-and-plug-connected appliances in accordance with 422.33, room air conditioners in accordance with440.63, ceiling mounted (paddle) fans in accordance with 410.30(B) or portable motors rated 1⁄3 hp or less.



SUBSTANTIATIONGrp2PI_3Final.pdf This is the only file for the SUBSTANTIATION. Thank you.





Public Input No. 4388-NFPA70-2014 [New Section after410.30(A)]

Proposed revised Section 430.109(F) is to support proposed newSection 410.30(B) in PI#4388. The definition of Attachment Plug is alsocreated to support this new proposed section.

Public Input No. 4388-NFPA70-2014 [New Section after410.30(A)]

Public Input No. 4422-NFPA70-2014 [New Definition afterDefinition: Askarel.]





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2337 of 5603 11/18/2014 2:46 PM

Substantiation: This Public Input seeks to modify Section 430.109(F) to support proposed new Section 410.30(B) that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI creates a new Section 410.30(B) to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 314.27(C) as well as another set to insert a new 406.16. There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new and modified NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this new section to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in 410.30(B). The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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For a cord-and-plug-connected motor, a fitting-connected motor, a horsepower-rated attachment plug andreceptacle, a horsepower-rated attachment fitting and receptacle, flanged surface inlet and cord connector,attachment fitting having ratings no less than the motor or or attachment plug and cord connector havingratings no less than the motor ratings shall be permitted to serve as the disconnecting means.Horsepower-rated attachment plugs or fittings , flanged surface inlets, receptacles, or cord connectors shallnot be required for cord-and-plug-connected appliances in accordance with 422.33, room air conditioners inaccordance with 440.63, ceiling mounted (paddle) fans in accordance with 406.16 or portable motors rated1⁄3 hp or less.



SUBSTANTIATIONGrp1PI_3Final.pdfThis is the only file and it is intended to be the SUBSTANTIATION.





Public Input No. 4199-NFPA 70-2014[New Section after 406.15]

Proposed revised Section 430.109(F) is to support proposednew Section 406.16 in PI#4199. The definition in PI #4316 alsosupports the newly created 406.16.

Public Input No. 4199-NFPA 70-2014[New Section after 406.15]

Public Input No. 4316-NFPA 70-2014[New Definition after Definition:Attachment Plug (Plug Cap)...]





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2336 of 5603 11/18/2014 2:46 PM

Substantiation: This Public Input seeks to modify Section 430.109(F) to support proposed new Section 406.16 that provides requirements for the new technology. This is one of 3 linked Public Inputs: the second PI creates a new Section 406.16 to provide requirements for the new technology and a third PI creates a new associated definition for “Attachment Fitting”. Similar sets of Public Inputs were submitted in the event the Panel wished to consider two alternate locations for adding this new technology, including submitting the same concepts to Sections 314.27(C) as well as another set to insert a new 410.30(B). There is a new third party certified combination that includes the use of a receptacle and an attachment fitting to supply, support and connect ceiling- or wall-luminaires and ceiling-suspended luminaires, and ceiling-suspended (paddle) fans. The attachment fitting is a recognized component used as part of a listed product. The attachment fitting is inserted in a listed receptacle. This Public Input is part of series of Public Inputs submitted to assure that this new third party certified combination is recognized by users and inspectors, and installed in a consistent and safe manner. There are 5 topics addressed in this substantiation: 1) Why new NEC text is needed; 2) explanation of the new technology; 3) what problem is being solved by adding new text; 4) relevant fatality and injury data; and 5) documentation that there are no essential patent concerns. Why new NEC text is necessary. This multifunctional receptacle and attachment fitting (not plug) combination is a new technology category and is not intended to be product or manufacturer specific. It should be noted that the attachment fitting is not a plug since it is used as part of a listed utilization device (luminaire or paddle fan). The technology is a load-bearing receptacle that is a quick connect and disconnect method that allows for safe wiring, installation and removal for ceiling mounted luminaires and ceiling fans. Once the receptacle and cover plate are in place, since the luminaire is disconnected from the power source until plugged in and there are not exposed energized parts, installation and connection of the utilization equipment (luminaire or paddle fan) is inherently safe. By adding this new section to address the new technology, it is easier for inspectors, installers and others to recognize, understand and assess this new technology and method of installation. Additionally for installers, it represents technology that eliminates or reduces electrical hazards in many common instances described in the Data portion of this substantiation. An example of this type of technology is the GE/Safety Quick Lighting and Fans Corp (SQL) product, of which over a million of these units were sold between 2007 and 2013. It is projected that availability and recognition of the technology will significantly increase usage. As the popularity of the technology grows, it is reasonable to assume other designs of the locking support and mounting receptacle and attachment fitting combination will arise. It is requested that the NEC Panels proactively recognize the new technology, as it will be in wide use and it will increase safety. Examples of new technology that have been acknowledged in the NEC past include wind turbines and electric vehicle charging systems in order to keep up with advances in the state-of-the-art electrical technologies.

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Ensuring Recognition of Appropriate NEC Requirements and Safe Installation. When the technology was submitted to UL to obtain a listing, it was initially placed in the “New and Unusual” category. As such, it was submitted to UL’s Electrical Council, and after much review and discussion, the technology was determined to be a receptacle and fitting (not plug) combination, and was successfully listed to UL 498, Attachment Plugs and Receptacles. Considering UL’s extensive steps used to categorize and evaluate the technology, it is foreseeable that others might not realize that this technology is indeed considered a receptacle and fitting (not plug) combination, nor understand the requirements for electrical safety unless the technology is clearly addressed in the NEC. This new technology combination of receptacle and attachment fitting cannot be electrically overloaded because an appropriate fitting will always be matched with the utilization device as part of its construction in accordance with its third party certification. Data from Consumer Products Safety Commission (CPSC), National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) show that the traditional methods of changing an existing luminaire or maintaining existing luminaires can be dangerous. This technology significantly reduces and in many cases eliminates these hazards. For these reasons, the technology should be addressed in the NEC. What is the technology? The technology is different than what is currently addressed in Article 406. The technology is a load-bearing receptacle that is a quick connect and disconnect method for ceiling mounted luminaires and ceiling fans. By adding this new section to address the new technology, the receptacle and attachment fitting combination, it allows inspectors to recognize what requirements govern the technology therefore they can easily understand and assess this new technology and method of installation. Although the suggested text is not intended to be product or manufacturer specific, an example of this technology from GE/SQL can be seen in the photo provided; a video describing the new technology can also be seen at www.safetyquicklight.com. With this new technology, the receptacle is installed to the ceiling outlet box, completing the wiring of the branch circuit through the receptacle unit. The electrician then installs a cover plate, just as with other receptacle types. To complete the installation, the luminaire or fan, by means of the attachment fitting that is part of the utilization equipment, is simply quick connected into the receptacle and the luminaire or ceiling fan installation is complete. What problem is being solved? By adding the new text, there is clear categorization of the new technology and the requirements to ensure electrical safety by electricians and inspectors. By adding this new section to address the new technology, it is safer and easier for installers, inspectors and others to recognize, understand and assess this new technology and method of installation to the appropriate requirements of the NEC. Intuitively we understand that not having to rewire each unit when the luminaire or ceiling fan is changed is safer, and there are data from CPSC, NIOSH and OSHA to confirm this notion. When an electrician installs the receptacle (female unit), it is mounted on a variation of the traditional crossbar. The attachment fitting (male fitting) is attached by the manufacturer to the luminaire, and is not available without attachment to a listed appliance. Thereby facilitating and increasing safety when the electrician installs the luminaire. Similar to the use of a ballast disconnect, this

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430.113 Energy from More Than One Source.

Motor and motor-operated equipment receiving electric energy from more than one source shall be providedwith disconnecting means from each source of electric energy immediately adjacent to the equipmentserved. Each source shall be permitted to have a separate disconnecting means. Where multipledisconnecting means are provided, a permanent warning sign shall be provided on or adjacent to eachdisconnecting means.

Exception No. 1: Where a motor receives electric energy from more than one source, the disconnectingmeans for the main power supply to the motor shall not be required to be immediately adjacent to themotor, provided that the controller disconnecting means is lockable in accordance with 110.25.

Exception No. 2: A separate disconnecting means shall not be required for a Class 2 remote-controlcircuit conforming with Article 725, rated not more than 30 actual volts, and isolated and ungrounded.








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2342 of 5603 11/18/2014 2:46 PM

Public Input No. 4325-NFPA 70-2014 [ Sections 430.128, 430.130 ]

Sections 430.128, 430.130

430.128 Disconnecting Means.

The disconnecting means shall be permitted to be in the incoming line to the conversion equipment and shallhave a rating not less than 115 percent of the rated input current of the conversion unit. the full-loadcurrent rating of the motor load as determined by 430.6.

430.130 Branch-Circuit Short-Circuit and Ground-Fault Protection for Single Motor Circuits ContainingPower Conversion Equipment.

(A) Circuits Containing Power Conversion Equipment.

Circuits containing power conversion equipment shall be protected by a branch-circuit short-circuit andground-fault protective device in accordance with the following:

(1) The rating and type of protection shall be determined by 430.52(C) (1), (C)(3), (C)(5), or (C)(6), usingthe full-load current rating of the motor load as determined by 430.6.

(2) Where maximum branch-circuit short-circuit and ground-fault protective ratings are stipulated forspecific device types in the manufacturer's instructions for the power conversion equipment or areotherwise marked on the equipment, they shall not be exceeded even if higher values are permitted by430.130(A) (1).

(3) A self-protected combination controller shall only be permitted where specifically identified in themanufacturer’s instructions for the power conversion equipment or if otherwise marked on theequipment.

Informational Note: The type of protective device, its rating, and its setting are often marked on orprovided with the power conversion equipment.

(B) Bypass Circuit/Device.

Branch-circuit short-circuit and ground-fault protection shall also be provided for a bypass circuit/device(s).Where a single branch-circuit short-circuit and ground-fault protective device is provided for circuitscontaining both power conversion equipment and a bypass circuit, the branch-circuit protective device typeand its rating or setting shall be in accordance with those determined for the power conversion equipmentand for the bypass circuit/device(s) equipment.


Section 430.130(A)(1) was revised for the 2014 NEC to address the sizing of the branch circuit protective device (BCPD) for a drive. The requirements for sizing the BCPD were changed to base the size of the BCPD on the full-load current of the motor and not the input current rating of the drive. However, 430.128 currently requires the disconnecting means to be sized at 115% of the input current rating of the drive. This requirement should be revised to align with the requirement for sizing the BCPD.


Submitter Full Name: John Kovacik

Organization: UL LLC

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2343 of 5603 11/18/2014 2:46 PM

Public Input No. 1356-NFPA 70-2014 [ New Section after 430.130(A) ]

430.130(A)(4) Where an instantaneous trip circuit breaker or semiconductor fuses are permitted inaccordance with the drive manufacturer’s instructions for use as the branch-circuit short-circuitand ground-fault protective device for listed Power Conversion Equipment, they shall be providedas an integral part of a single listed assembly incorporating both the protective device and powerconversion equipment.


This text makes it clear that while an instantaneous trip circuit breaker or semiconductor fuses are permitted for branch circuit protection of an adjustable speed drive, these devices cannot be field installed separately from the adjustable speed drive. This is based on the requirement in UL 508C – 57.1.1(b) and (d) shown below:b) For semiconductor fuse types, the marking shall include the fuse manufacturer and fuse model number (no fuse rating is required). This marking shall also state that the drive controller and overcurrent protection device must be integrated within the same overall assembly; d) For instantaneous trip circuit breaker types, the marking shall include the breaker manufacturer and breaker model number (no breaker rating is required). This marking shall also state that the drive controller and overcurrent protection device must be integrated within the same overall assembly;



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2344 of 5603 11/18/2014 2:46 PM


430.231 General.

Part XII specifies that live parts shall be protected in a manner judged adequate manner approvedas adequate for the hazard involved.


I believe the correct terminology to be used here is the word "approved" rather than "judged adequate" since" approved" is defined in Article 100, whereas "Judged Adequate" is not, and may be difficult to interpret.


Submitter Full Name: RUSS LEBLANC

Organization: EC AND M MAGAZINE

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Submittal Date: Sat Sep 06 14:34:02 EDT 2014


2345 of 5603 11/18/2014 2:46 PM


430.232 Where Required.

Exposed live parts of motors and controllers operating at 50 actual volts or more between terminals shall beguarded against accidental contact by enclosure or by location as follows:

(1) By installation in a room or enclosure that is accessible only to qualified persons

(2) By installation on a suitable balcony, gallery, or platform, elevated and arranged so as to excludeunqualified persons

(3) By elevation 2.5 m (8 ft) or more above the floor

Exception: Live parts of motors operating at more than 50 actual volts between terminals shallnot require additional guarding for stationary motors that have commutators, collectors, and brushrigging located inside of motor-end brackets and not conductively connected to supply circuitsoperating at more than 150 actual volts to ground.


This section uses voltages that are "actual" hard limits.Refer to the substantiation for 1902 for more information.

[the only changes are adding "actual" in front of "volts"]






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2346 of 5603 11/18/2014 2:46 PM


430.233 Guards for Attendants.

Where live parts of motors or controllers operating at over 50 actual volts to ground are guarded againstaccidental contact only by location as specified in 430.232, and where adjustment or other attendance maybe necessary during the operation of the apparatus, suitable insulating mats or platforms shall be providedso that the attendant cannot readily touch live parts unless standing on the mats or platforms.

Informational Note: For working space, see 110.26 and 110.34.








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2347 of 5603 11/18/2014 2:46 PM

Public Input No. 2644-NFPA 70-2014 [ Part XIII. ]

Part XIII. Grounding Bonding — All Voltages






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5557 of 5603 11/18/2014 2:46 PM

Public Input No. 2646-NFPA 70-2014 [ Sections 430.241, 430.242, 430.243, 430.244 ]

Sections 430.241, 430.242, 430.243, 430.244

430.241 General.

Part XIII specifies the grounding bonding of exposed non–current-carrying metal parts, likely to becomeenergized, of motor and controller frames to prevent a voltage aboveground in the event of accidentalcontact between energized parts and frames. Insulation, isolation, or guarding are suitable alternatives togrounding bonding of motors under certain conditions.

430.242 Stationary Motors.

The frames of stationary motors shall be grounded bonded under any of the following conditions:

(1) Where supplied by metal-enclosed wiring

(2) Where in a wet location and not isolated or guarded

(3) If in a hazardous (classified) location

(4) If the motor operates with any terminal at over 150 volts to ground

Where the frame of the motor is not grounded bonded , it shall be permanently and effectively insulated fromthe ground.

430.243 Portable Motors.

The frames of portable motors that operate over 150 volts to ground shall be guarded or grounded bonded .

Informational Note No. 1: See 250.114 (4) for grounding bonding of portable appliances in other thanresidential occupancies.

Informational Note No. 2: See 250.119(C) for color of equipment grounding bonding conductor.

Exception No. 1: Listed motor-operated tools, listed motor-operated appliances, and listed motor-operated equipment shall not be required to be grounded bonded where protected by a system ofdouble insulation or its equivalent. Double-insulated equipment shall be distinctively marked.

Exception No. 2: Listed motor-operated tools, listed motor-operated appliances, and listed motor-operated equipment connected by a cord and attachment plug other than those required to be groundedbonded in accordance with 250.114.

430.244 Controllers.

Controller enclosures shall be connected to the equipment grounding bonding conductor regardless ofvoltage. Controller enclosures shall have means for attachment of an equipment grounding bondingconductor termination in accordance with 250.8.

Exception: Enclosures attached to ungrounded unbonded portable equipment shall not be required to begrounded bonded .


The term “equipment grounding conductor” is a misnomer even though it has been in use for many many years. Although it is a grounded conductor in normal practice for grounded systems, the idea that grounding makes a system safe and prevents an electrical shock is inherently false. Connecting a conductor from metallic equipment “likely to become energized” to the earth does not reduce the shock potential during a fault but, rather, may enhance it if it becomes the only path back to the source. The shock potential is the voltage drop along the conductor (equipment grounding conductor) due to fault current flowing back to the source. The shock hazard depends upon the time until the fault is cleared by an overcurrent device or some other event, thus the clearing time is a critical factor in safety.This conductor (equipment grounding conductor) is intended to protect equipment and personnel by providing a sufficiently high fault current to operate an overcurrent device and clear the fault rapidly. A low impedance fault current path can provide the necessary high fault current regardless of whether the conductor is grounded or not. It is only the fault current path and not the “grounding” that can provide the high fault current necessary to operate an overcurrent device rapidly. The term “bonding” is generally used to insure that a connection and current path is low impedance, reliable, and able to withstand the fault current. This conductor provides a basic bonding function by insuring, through proper sizing and bonding jumpers as necessary, that the connection from equipment to fault current source is both low impedance and reliable. A “bonding” function is the necessary function rather than a “grounding” function to clear a fault rapidly. A grounding function is provided by a grounding electrode conductor that connects an electrical system source to the earth. An overcurrent device operates in a time interval based upon the current through it. That current depends upon proper bonding to the source and is relatively independent of connection to the grounding electrode at the source where the overcurrent device is located. The use of the term “equipment bonding conductor”


2348 of 5603 11/18/2014 2:46 PM

would better describe the function of this important conductor instead of the term “equipment grounding conductor”. “Systems” are “grounded”, “equipment” is “bonded”. Making this change would also bring the NEC into conformity with the Canadian Electrical Code which uses the term “equipment bonding conductor”.Code Panel 5 members have often stated that those in the industry understand what the purpose of the equipment grounding conductor is for. The Panel members understand this also. There are, however, many people doing electrical work who don’t understand and think connecting equipment to a local grounding electrode accomplishes the same objective as an equipment grounding conductor. This is apparent from the large number of questions that are asked at IAEI inspectors meetings, grounding classes, and as documented recently in the July/August 2014 issue of the NFPA Journal under the title “Pool Rules”. Just ask the inspectors and the teachers.Changing the terminology will serve to make it clear that the principal function of this conductor is to bond the equipment being protected to the source where the fault current originates. Changing the terminology will not confuse those that understand the proper purpose of this bonding conductor.




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2349 of 5603 11/18/2014 2:46 PM


430.242 Stationary Motors.

The frames of stationary motors shall be grounded under any of the following conditions:

(1) Where supplied by metal-enclosed wiring

(2) Where in a wet location and not isolated or guarded

(3) If in a hazardous (classified) location

(4) If the motor operates with any terminal at over 150 actual volts to ground

Where the frame of the motor is not grounded, it shall be permanently and effectively insulated from theground.








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2350 of 5603 11/18/2014 2:46 PM


430.243 Portable Motors.

The frames of portable motors that operate over 150 actual volts to ground shall be guarded or grounded.

Informational Note No. 1: See 250.114 (4) for grounding of portable appliances in other thanresidential occupancies.

Informational Note No. 2: See 250.119(C) for color of equipment grounding conductor.

Exception No. 1: Listed motor-operated tools, listed motor-operated appliances, and listed motor-operated equipment shall not be required to be grounded where protected by a system of doubleinsulation or its equivalent. Double-insulated equipment shall be distinctively marked.

Exception No. 2: Listed motor-operated tools, listed motor-operated appliances, and listed motor-operated equipment connected by a cord and attachment plug other than those required to be groundedin accordance with 250.114.





Public Input No. 1902-NFPA70-2014 [Global Input]

This section uses a voltage that is an "actual" hard limit. Refer to thesubstantiation for 1902 for more information.



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430.245 Method of Grounding Bonding .

Connection to the equipment grounding bonding conductor shall be done in the manner specified in Part VIof Article 250.

(A) Grounding Bonding Through Terminal Housings.

Where the wiring to motors is metal-enclosed cable or in metal raceways, junction boxes to house motorterminals shall be provided, and the armor of the cable or the metal raceways shall be connected to them inthe manner specified in 250.96(A) and 250.97.

(B) Separation of Junction Box from Motor.

The junction box required by 430.245(A) shall be permitted to be separated from the motor by not morethan 1.8 m (6 ft), provided the leads to the motor are stranded conductors within Type AC cable, interlockedmetal tape Type MC cable where listed and identified in accordance with 250.118 (10)(a), or armored cordor are stranded leads enclosed in liquidtight flexible metal conduit, flexible metal conduit, intermediate metalconduit, rigid metal conduit, or electrical metallic tubing not smaller than metric designator 12 (trade size 3⁄8 ),the armor or raceway being connected both to the motor and to the box.

Liquidtight flexible nonmetallic conduit and rigid nonmetallic conduit shall be permitted to enclose the leads tothe motor, provided the leads are stranded and the required equipment grounding bonding conductor isconnected to both the motor and to the box.

Where stranded leads are used, protected as specified above, each strand within the conductor shall be notlarger than 10 AWG and shall comply with other requirements of this Code for conductors to be used inraceways.

(C) Grounding Bonding of Controller-Mounted Devices.

Instrument transformer secondaries and exposed non–current-carrying metal or other conductive parts orcases of instrument transformers, meters, instruments, and relays shall be grounded bonded as specified in250.170 through 250.178.


The term “equipment grounding conductor” is a misnomer even though it has been in use for many many years. Although it is a grounded conductor in normal practice for grounded systems, the idea that grounding makes a system safe and prevents an electrical shock is inherently false. Connecting a conductor from metallic equipment “likely to become energized” to the earth does not reduce the shock potential during a fault but, rather, may enhance it if it becomes the only path back to the source. The shock potential is the voltage drop along the conductor (equipment grounding conductor) due to fault current flowing back to the source. The shock hazard depends upon the time until the fault is cleared by an overcurrent device or some other event, thus the clearing time is a critical factor in safety.This conductor (equipment grounding conductor) is intended to protect equipment and personnel by providing a sufficiently high fault current to operate an overcurrent device and clear the fault rapidly. A low impedance fault current path can provide the necessary high fault current regardless of whether the conductor is grounded or not. It is only the fault current path and not the “grounding” that can provide the high fault current necessary to operate an overcurrent device rapidly. The term “bonding” is generally used to insure that a connection and current path is low impedance, reliable, and able to withstand the fault current. This conductor provides a basic bonding function by insuring, through proper sizing and bonding jumpers as necessary, that the connection from equipment to fault current source is both low impedance and reliable. A “bonding” function is the necessary function rather than a “grounding” function to clear a fault rapidly. A grounding function is provided by a grounding electrode conductor that connects an electrical system source to the earth. An overcurrent device operates in a time interval based upon the current through it. That current depends upon proper bonding to the source and is relatively independent of connection to the grounding electrode at the source where the overcurrent device is located. The use of the term “equipment bonding conductor” would better describe the function of this important conductor instead of the term “equipment grounding conductor”. “Systems” are “grounded”, “equipment” is “bonded”. Making this change would also bring the NEC into conformity with the Canadian Electrical Code which uses the term “equipment bonding conductor”.Code Panel 5 members have often stated that those in the industry understand what the purpose of the equipment grounding conductor is for. The Panel members understand this also. There are, however, many people doing electrical work who don’t understand and think connecting equipment to a local grounding electrode accomplishes the same objective as an equipment grounding conductor. This is apparent from the large number of questions that are asked at IAEI inspectors meetings, grounding classes, and as documented recently in the July/August 2014 issue of the NFPA Journal under the title “Pool Rules”. Just ask the inspectors and the teachers.Changing the terminology will serve to make it clear that the principal function of this conductor is to bond the


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equipment being protected to the source where the fault current originates. Changing the terminology will not confuse those that understand the proper purpose of this bonding conductor.




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2353 of 5603 11/18/2014 2:46 PM

Public Input No. 2059-NFPA 70-2014 [ Part XIV. ]

Part XIV. Tables

Table 430.247 Full-Load Current in Amperes, Direct-Current Motors

The following values of full-load currents* are for motors running at base speed.

HorsepowerArmature Voltage Rating*

90 Volts 120 Volts 180 Volts 240 Volts 500 Volts 550 Volts

1⁄4 4.0 3.1 2.0 1.6 — —1⁄3 5.2 4.1 2.6 2.0 — —1⁄2 6.8 5.4 3.4 2.7 — —3⁄4 9.6 7.6 4.8 3.8 — —

1 12.2 9.5 6.1 4.7 — —

1 1⁄2 — 13.2 8.3 6.6 — —

2 — 17 10.8 8.5 — —

3 — 25 16 12.2 — —

5 — 40 27 20 — —

7 1⁄2 — 58 — 29 13.6 12.2

10 — 76 — 38 18 16

15 — — — 55 27 24

20 — — — 72 34 31

25 — — — 89 43 38

30 — — — 106 51 46

40 — — — 140 67 61

50 — — — 173 83 75

60 — — — 206 99 90

75 — — — 255 123 111

100 — — — 341 164 148

125 — — — 425 205 185

150 — — — 506 246 222

200 — — — 675 330 294

*These are average dc quantities.

Table 430.248 Full-Load Currents in Amperes, Single-Phase Alternating-Current Motors

The following values of full-load currents are for motors running at usual speeds and motors with normaltorque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permittedfor system voltage ranges of 110 to 120 and 220 to 240 volts.

Horsepower115

Volts

200

Volts

208

Volts

230

Volts

1⁄6 4.4 2.5 2.4 2.21⁄4 5.8 3.3 3.2 2.91⁄3 7.2 4.1 4.0 3.61⁄2 9.8 5.6 5.4 4.93⁄4 13.8 7.9 7.6 6.9

1 16 9.2 8.8 8.0

1 1⁄2 20 11.5 11.0 10

2 24 13.8 13.2 12

3 34 19.6 18.7 17


5558 of 5603 11/18/2014 2:46 PM

Horsepower115

Volts

200

Volts

208

Volts

230

Volts

5 56 32.2 30.8 28

7 1⁄2 80 46.0 44.0 40

10 100 57.5 55.0 50

Table 430.249 Full-Load Current, Two-Phase Alternating-Current Motors (4-Wire)

The following values of full-load current are for motors running at speeds usual for belted motors and motorswith normal torque characteristics. Current in the common conductor of a 2-phase, 3-wire system will be1.41 times the value given. The voltages listed are rated motor voltages. The currents listed shall bepermitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 600 volts.

Horsepower

Induction-Type Squirrel Cage and

Wound Rotor (Amperes)

115

Volts230 Volts 460 Volts 575 Volts 2300 Volts

1⁄2 4.0 2.0 1.0 0.8 —3⁄4 4.8 2.4 1.2 1.0 —

1 6.4 3.2 1.6 1.3 —

1 1⁄2 9.0 4.5 2.3 1.8 —

2 11.8 5.9 3.0 2.4 —

3 — 8.3 4.2 3.3 —

5 — 13.2 6.6 5.3 —

7 1⁄2 — 19 9.0 8.0 —

10 — 24 12 10 —

15 — 36 18 14 —

20 — 47 23 19 —

25 — 59 29 24 —

30 — 69 35 28 —

40 — 90 45 36 —

50 — 113 56 45 —

60 — 133 67 53 14

75 — 166 83 66 18

100 — 218 109 87 23

125 — 270 135 108 28

150 — 312 156 125 32

200 — 416 208 167 43

Table 430.250 Full-Load Current, Three-Phase Alternating-Current Motors

The following values of full-load currents are typical for motors running at speeds usual for belted motors andmotors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listedshall be permitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 600volts.

Horsepower

Induction-Type Squirrel Cage and Wound Rotor(Amperes)

Synchronous-Type UnityPower

Factor* (Amperes)

115Volts

200Volts

208Volts

230Volts

460Volts

575Volts

2300Volts

230Volts

460Volts

575Volts

2300Volts

1⁄2 4.4 2.5 2.4 2.2 1.1 0.9 — — — — —3⁄4 6.4 3.7 3.5 3.2 1.6 1.3 — — — — —

1 8.4 4.8 4.6 4.2 2.1 1.7 — — — — —

1 1⁄2 12.0 6.9 6.6 6.0 3.0 2.4 — — — — —

2 13.6 7.8 7.5 6.8 3.4 2.7 — — — — —

3 — 11.0 10.6 9.6 4.8 3.9 — — — — —


5559 of 5603 11/18/2014 2:46 PM

Horsepower



Factor* (Amperes)

115Volts

200Volts

208Volts

230Volts

460Volts

575Volts

2300Volts

230Volts

460Volts

575Volts

2300Volts

5 — 17.5 16.7 15.2 7.6 6.1 — — — — —

7 1⁄2 — 25.3 24.2 22 11 9 — — — — —

10 — 32.2 30.8 28 14 11 — — — — —

15 — 48.3 46.2 42 21 17 — — — — —

20 — 62.1 59.4 54 27 22 — — — — —

25 — 78.2 74.8 68 34 27 — 53 26 21 —

30 — 92 88 80 40 32 — 63 32 26 —

40 — 120 114 104 52 41 — 83 41 33 —

50 — 150 143 130 65 52 — 104 52 42 —

60 — 177 169 154 77 62 16 123 61 49 12

75 — 221 211 192 96 77 20 155 78 62 15

100 — 285 273 248 124 99 26 202 101 81 20

125 — 359 343 312 156 125 31 253 126 101 25

150 — 414 396 360 180 144 37 302 151 121 30

200 552 528 480 240 192 49 400 201 161 40

250 — — — — 302 242 60 — — — —

300 — — — — 361 289 72 — — — —

350 — — — — 414 336 83 — — — —

400 — — — — 477 382 95 — — — —

450 — — — — 515 412 103 — — — —

500 — — — — 590 472 118 — — — —

*For 90 and 80 percent power factor, the figures shall be multiplied by 1.1 and 1.25, respectively.

Table 430.251(A) Conversion Table of Single-Phase Locked- Rotor Currents for Selection of DisconnectingMeans and Controllers as Determined from Horsepower and Voltage Rating

For use only with 430.110, 440.12, 440.41, and 455.8(C).

Rated

Horsepower

Maximum Locked-Rotor Current in

Amperes, Single Phase

115 Volts 208 Volts 230 Volts

½ 58.8 32.5 29.4

¾ 82.8 45.8 41.4

1 96 53 48

1½ 120 66 60

2 144 80 72

3 204 113 102

5 336 186 168

7½ 480 265 240

10 1000 332 300

Table 430.251(B) Conversion Table of Polyphase Design B, C, and D Maximum Locked-Rotor Currents forSelection of Disconnecting Means and Controllers as Determined from Horsepower and Voltage Rating andDesign Letter

For use only with 430.110, 440.12, 440.41 and 455.8(C).

Rated

Horsepower

Maximum Motor Locked-Rotor Current in Amperes, Two- and Three-Phase, Design B,C, and D*



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B, C, D B, C, D B, C, D B, C, D B, C, D B, C, D

1⁄2 40 23 22.1 20 10 83⁄4 50 28.8 27.6 25 12.5 10

1 60 34.5 33 30 15 12

1 1⁄2 80 46 44 40 20 16

2 100 57.5 55 50 25 20

3 — 73.6 71 64 32 25.6

5 — 105.8 102 92 46 36.8

7 1⁄2 — 146 140 127 63.5 50.8

10 — 186.3 179 162 81 64.8

15 — 267 257 232 116 93

20 — 334 321 290 145 116

25 — 420 404 365 183 146

30 — 500 481 435 218 174

40 — 667 641 580 290 232

50 — 834 802 725 363 290

60 — 1001 962 870 435 348

75 — 1248 1200 1085 543 434

100 — 1668 1603 1450 725 580

125 — 2087 2007 1815 908 726

150 — 2496 2400 2170 1085 868

200 — 3335 3207 2900 1450 1160

250 — — — — 1825 1460

300 — — — — 2200 1760

350 — — — — 2550 2040

400 — — — — 2900 2320

450 — — — — 3250 2600

500 — — — — 3625 2900

*Design A motors are not limited to a maximum starting current or locked rotor current.


This 1000 is here accidentally as part of a find and replace for 600 to 1000. It should be restored to 600. If a 1000 volt is needed (for 2 phase) then a new column should be added.

It is very unlikely that a motor rated at 550V and at 1000V draw the same current for a given horsepower.



Organization: none


Street Address:

City:

State:

Zip:



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Part XIV. Tables





1⁄4 4.0 3.1 2.0 1.6 — —1⁄3 5.2 4.1 2.6 2.0 — —1⁄2 6.8 5.4 3.4 2.7 — —3⁄4 9.6 7.6 4.8 3.8 — —

1 12.2 9.5 6.1 4.7 — —

1 1⁄2 — 13.2 8.3 6.6 — —

2 — 17 10.8 8.5 — —

3 — 25 16 12.2 — —

5 — 40 27 20 — —

7 1⁄2 — 58 — 29 13.6 12.2

10 — 76 — 38 18 16

15 — — — 55 27 24

20 — — — 72 34 31

25 — — — 89 43 38

30 — — — 106 51 46

40 — — — 140 67 61

50 — — — 173 83 75

60 — — — 206 99 90

75 — — — 255 123 111

100 — — — 341 164 148

125 — — — 425 205 185

150 — — — 506 246 222

200 — — — 675 330 294



The following values of full-load currents are for motors running at usual speeds and motors with normaltorque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permittedfor system voltage ranges of 110 to 120 and , 220 to 240 volts, and 575/1000v.Additional voltages may beavailable from vendors.

Horsepower115

Volts

200 /208/230

Volts

208

Volts230

575/1000

Volts

1⁄6 4.4 2.5 / 2.4 / 2.2 2.4 0.25/0.1251⁄4 5.8 3.3 /3.2/2.9 3.2 2.91⁄3 7.2 4.1 /4.0/3.6 4.0 3.61⁄2 9.8 5.6 5.4 4.93⁄4 13.8 7.9 7.6 6.9

1 16 9.2 8.8 8.0

1 1⁄2 20 11.5 11.0 10

2 24 13.8 13.2 12


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Horsepower115

Volts

200 /208/230

Volts

208

Volts230

575/1000

Volts

3 34 19.6 18.7 17

5 56 32.2 30.8 28

7 1⁄2 80 46.0 44.0 40

10 100 57.5 55.0 50


The following values of full-load current are for motors running at speeds usual for belted motors and motorswith normal torque characteristics. Current in the common conductor of a 2-phase, 3-wire system will be1.41 times the value given. The voltages listed are rated motor voltages. The currents listed shall bepermitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 volts.

Horsepower



115

Volts208/ 230 /480 Volts 460 Volts 575 /1000 Volts 2300 Volts

1⁄2 4.0 2.0 /1/0.8 1.0 0. 8 80.4 —3⁄4 4.8 2.4 /2.2/1.2 1.2 1.0 /0.5 —

1 6.4 3.2 /3.0/1.6 1.6 1.3 /0.7 —

1 1⁄2 9.0 4.5 2.3 1.8 —

2 11.8 5.9 3.0 2.4 —

3 — 8.3 4.2 3.3 —

5 — 13.2 6.6 5.3 —

7 1⁄2 — 19 9.0 8.0 —

10 — 24 12 10 —

15 — 36 18 14 —

20 — 47 23 19 —

25 — 59 29 24 —

30 — 69 35 28 —

40 — 90 45 36 —

50 — 113 56 45 —

60 — 133 67 53 14

75 — 166 83 66 18

100 — 218 109 87 23

125 — 270 135 108 28

150 — 312 156 125 32

200 — 416 208 167 43


The following values of full-load currents are typical for motors running at speeds usual for belted motors andmotors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listedshall be permitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 volts.

Horsepower


Synchronous-Type Unity Power

Factor* (Amperes)

115Volts

200Volts

208 /230/480Volts

230Volts

460Volts

575 /1000Volts

2300Volts

230 /480Volts

460Volts

575 /1000Volts

2300Volts

1⁄2 4.4 2.5 2.4 / 2.2 / 1.1 0.9 /0.45 — — — — —3⁄4 6.4 3.7 3.5 3.2 1.6 1.3 — — — — —

1 8.4 4.8 4.6 4.2 2.1 1.7 — — — — —

1 1⁄2 12.0 6.9 6.6 6.0 3.0 2.4 — — — — —

2 13.6 7.8 7.5 6.8 3.4 2.7 — — — — —

3 — 11.0 10.6 9.6 4.8 3.9 — — — — —


5563 of 5603 11/18/2014 2:46 PM

Horsepower


Synchronous-Type Unity Power

Factor* (Amperes)

115Volts

200Volts

208 /230/480Volts

230Volts

460Volts

575 /1000Volts

2300Volts

230 /480Volts

460Volts

575 /1000Volts

2300Volts

5 — 17.5 16.7 15.2 7.6 6.1 — — — — —

7 1⁄2 — 25.3 24.2 22 11 9 — — — — —

10 — 32.2 30.8 28 14 11 — — — — —

15 — 48.3 46.2 42 21 17 — — — — —

20 — 62.1 59.4 54 27 22 — — — — —

25 — 78.2 74.8 68 34 27 — 53 /26 26 21 /11 —

30 — 92 88 80 40 32 — 63 32 26 —

40 — 120 114 104 52 41 — 83 41 33 —

50 — 150 143 130 65 52 — 104 52 42 —

60 — 177 169 154 77 62 16 123 61 49 12

75 — 221 211 192 96 77 20 155 78 62 15

100 — 285 273 248 124 99 26 202 101 81 20

125 — 359 343 312 156 125 31 253 126 101 25

150 — 414 396 360 180 144 37 302 151 121 30

200 552 528 480 240 192 49 400 201 161 40

250 — — — — 302 242 60 — — — —

300 — — — — 361 289 72 — — — —

350 — — — — 414 336 83 — — — —

400 — — — — 477 382 95 — — — —

450 — — — — 515 412 103 — — — —

500 — — — — 590 472 118 — — — —




Rated

Horsepower




½ 58.8 32.5 29.4

¾ 82.8 45.8 41.4

1 96 53 48

1½ 120 66 60

2 144 80 72

3 204 113 102

5 336 186 168

7½ 480 265 240

10 1000 332 300



Rated

Horsepower


115 Volts 200 Volts 208/230/480 Volts 230 Volts 460 Volts 575/1000 Volts



5564 of 5603 11/18/2014 2:46 PM

Rated

Horsepower


115 Volts 200 Volts 208/230/480 Volts 230 Volts 460 Volts 575/1000 Volts

B, C, D B, C, D B, C, D B, C, D B, C, D B, C, D1⁄2 40 23 22.1 /20/10 20 10 8 /43⁄4 50 28.8 27.6 25 12.5 10

1 60 34.5 33 30 15 12

1 1⁄2 80 46 44 40 20 16

2 100 57.5 55 50 25 20

3 — 73.6 71 64 32 25.6

5 — 105.8 102 92 46 36.8

7 1⁄2 — 146 140 127 63.5 50.8

10 — 186.3 179 162 81 64.8

15 — 267 257 232 116 93

20 — 334 321 290 145 116

25 — 420 404 365 183 146

30 — 500 481 435 218 174

40 — 667 641 580 290 232

50 — 834 802 725 363 290

60 — 1001 962 870 435 348

75 — 1248 1200 1085 543 434

100 — 1668 1603 1450 725 580

125 — 2087 2007 1815 908 726

150 — 2496 2400 2170 1085 868

200 — 3335 3207 2900 1450 1160

250 — — — — 1825 1460

300 — — — — 2200 1760

350 — — — — 2550 2040

400 — — — — 2900 2320

450 — — — — 3250 2600

500 — — — — 3625 2900




table_3_hp_currents.xlsx 1000v motor hp fla and lr values

18_9_al_amp_tables.xlsx small cable #18 cu/al to #7 ampacities

table_4_max_let-thr.xlsx three phase transformer let through currents


as discussed on the spread sheets and with 250, 240, and 310 we need smaller cables, breakers, and grounds for smaller 1000v motor and utilization loads. I have marked the 430.250 tables. A way to acheive this is to follow our motor nameplate process by butting a slash between the voltages and between the fla ampacities. This will give us enough room to add the 1000v data for the single phase and 3 phase motors, syn motors, and locked rotor values




Affilliation: self


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IEC RATING

NEMA

RATING

480V HP

Rating

Maximum 480V

Current FLA Rating

Typical 480V Locked

Rotor Rating

Potential

1000V HP

Rating

Potential Maximum

1000V Current FLA

Rating

Potential 1000V Locked

Rotor Rating

12A 00 2 3.4 20 4 3.1 18

12A 0 5 7.6 46 10 7.7 46

18A 1 10 14 84 20 13.6 82

32A 2 25 34 204 50 34.0 204

63A 3 50 65 390 100 67.9 408

97A 4 used 60 77 462 125 80.2 481

97A 4 used 75 96 576 150 96.2 577

4 100 124 744 200 121.6 729

5 used 125 156 936 250 151.9 912

5 used 150 180 1260 300 182.3 1276

5 used 200 240 1680 400 243.1 1702

5 250 302 2416 500 303.9 2431

6 400 477 3816 800 486.2 3890





Copper

Stranded

AWG

Aluminum

Solid <11

AWG mm2 Area

tested maximum

Ampacities

at 90° C

Amps

at 60° C

Amps

at 75° C

Amps

at 90° C

18 0.823 14 6 7 7

17 1.04 14 6 7 7

16 1.31 18 8 10 10

15 1.65 18 8 10 10

14 2.08 25 15 20 25

13 2.62 22 15 20 20

12 3.31 30 20 25 30

11 4.17 28 20 25 25

10 5.26 40 30 35 40

9 6.63 38 25 30 35

8 8.37 55 40 50 55

7 10.5 54 40 45 50


Irated times 100 divided by %Z

3 phase secondary 1.50% 3% 4% 5% 6% 8%

Kva Irated Maximum Isec Fault for various %Z

45 26 1732 866 650 520 433 325

75 43 2887 1443 1083 866 722 541

112.5 65 4330 2165 1624 1299 1083 812

150 87 5774 2887 2165 1732 1443 1083

225 130 8661 4330 3248 2598 2165 1624

300 173 11547 5774 4330 3464 2887 2165

500 289 19246 9623 7217 5774 4811 3609

750 433 28868 14434 10826 8661 7217 5413

1000 577 38491 19246 14434 11547 9623 7217

1200 693 23095 17321 13857 11547 8661

1500 866 28868 21651 17321 14434 10826

2000 1155 38491 28868 23095 19246 14434

2500 1443 48114 36085 28868 24057 18043

3000 1732 57737 43303 34642 28868 21651

5000 2887 96228 72171 57737 48114 36085

3-phase transformer let-through AFC Levels

Street Address:

City:

State:

Zip:

Submittal Date: Mon Nov 03 21:24:40 EST 2014


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Table should be expanded to Full Load Amps for Motors up to 1000HP. This could be done one of twoways.

(1) Expand Table to include FLA rating for all motors up to 1000HP by 50HP incraments

(2) Create a Formula for FLA above 500HP Example (Motor HP Rating X Constant Amp maybe 1.2-1.4=FLA of Motor)

Part XIV. Tables





1⁄4 4.0 3.1 2.0 1.6 — —1⁄3 5.2 4.1 2.6 2.0 — —1⁄2 6.8 5.4 3.4 2.7 — —3⁄4 9.6 7.6 4.8 3.8 — —

1 12.2 9.5 6.1 4.7 — —

1 1⁄2 — 13.2 8.3 6.6 — —

2 — 17 10.8 8.5 — —

3 — 25 16 12.2 — —

5 — 40 27 20 — —

7 1⁄2 — 58 — 29 13.6 12.2

10 — 76 — 38 18 16

15 — — — 55 27 24

20 — — — 72 34 31

25 — — — 89 43 38

30 — — — 106 51 46

40 — — — 140 67 61

50 — — — 173 83 75

60 — — — 206 99 90

75 — — — 255 123 111

100 — — — 341 164 148

125 — — — 425 205 185

150 — — — 506 246 222

200 — — — 675 330 294



The following values of full-load currents are for motors running at usual speeds and motors with normaltorque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permittedfor system voltage ranges of 110 to 120 and 220 to 240 volts.

Horsepower115

Volts

200

Volts

208

Volts

230

Volts

1⁄6 4.4 2.5 2.4 2.21⁄4 5.8 3.3 3.2 2.91⁄3 7.2 4.1 4.0 3.61⁄2 9.8 5.6 5.4 4.9


5572 of 5603 11/18/2014 2:46 PM

Horsepower115

Volts

200

Volts

208

Volts

230

Volts3⁄4 13.8 7.9 7.6 6.9

1 16 9.2 8.8 8.0

1 1⁄2 20 11.5 11.0 10

2 24 13.8 13.2 12

3 34 19.6 18.7 17

5 56 32.2 30.8 28

7 1⁄2 80 46.0 44.0 40

10 100 57.5 55.0 50


The following values of full-load current are for motors running at speeds usual for belted motors and motorswith normal torque characteristics. Current in the common conductor of a 2-phase, 3-wire system will be1.41 times the value given. The voltages listed are rated motor voltages. The currents listed shall bepermitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 volts.

Horsepower



115


1⁄2 4.0 2.0 1.0 0.8 —3⁄4 4.8 2.4 1.2 1.0 —

1 6.4 3.2 1.6 1.3 —

1 1⁄2 9.0 4.5 2.3 1.8 —

2 11.8 5.9 3.0 2.4 —

3 — 8.3 4.2 3.3 —

5 — 13.2 6.6 5.3 —

7 1⁄2 — 19 9.0 8.0 —

10 — 24 12 10 —

15 — 36 18 14 —

20 — 47 23 19 —

25 — 59 29 24 —

30 — 69 35 28 —

40 — 90 45 36 —

50 — 113 56 45 —

60 — 133 67 53 14

75 — 166 83 66 18

100 — 218 109 87 23

125 — 270 135 108 28

150 — 312 156 125 32

200 — 416 208 167 43


The following values of full-load currents are typical for motors running at speeds usual for belted motors andmotors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listedshall be permitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to 1000 volts.

Horsepower



Factor* (Amperes)

115Volts

200Volts

208Volts

230Volts

460Volts

575Volts

2300Volts

230Volts

460Volts

575Volts

2300Volts

1⁄2 4.4 2.5 2.4 2.2 1.1 0.9 — — — — —


5573 of 5603 11/18/2014 2:46 PM

Horsepower



Factor* (Amperes)

115Volts

200Volts

208Volts

230Volts

460Volts

575Volts

2300Volts

230Volts

460Volts

575Volts

2300Volts

3⁄4 6.4 3.7 3.5 3.2 1.6 1.3 — — — — —

1 8.4 4.8 4.6 4.2 2.1 1.7 — — — — —

1 1⁄2 12.0 6.9 6.6 6.0 3.0 2.4 — — — — —

2 13.6 7.8 7.5 6.8 3.4 2.7 — — — — —

3 — 11.0 10.6 9.6 4.8 3.9 — — — — —

5 — 17.5 16.7 15.2 7.6 6.1 — — — — —

7 1⁄2 — 25.3 24.2 22 11 9 — — — — —

10 — 32.2 30.8 28 14 11 — — — — —

15 — 48.3 46.2 42 21 17 — — — — —

20 — 62.1 59.4 54 27 22 — — — — —

25 — 78.2 74.8 68 34 27 — 53 26 21 —

30 — 92 88 80 40 32 — 63 32 26 —

40 — 120 114 104 52 41 — 83 41 33 —

50 — 150 143 130 65 52 — 104 52 42 —

60 — 177 169 154 77 62 16 123 61 49 12

75 — 221 211 192 96 77 20 155 78 62 15

100 — 285 273 248 124 99 26 202 101 81 20

125 — 359 343 312 156 125 31 253 126 101 25

150 — 414 396 360 180 144 37 302 151 121 30

200 552 528 480 240 192 49 400 201 161 40

250 — — — — 302 242 60 — — — —

300 — — — — 361 289 72 — — — —

350 — — — — 414 336 83 — — — —

400 — — — — 477 382 95 — — — —

450 — — — — 515 412 103 — — — —

500 — — — — 590 472 118 — — — —




Rated

Horsepower




½ 58.8 32.5 29.4

¾ 82.8 45.8 41.4

1 96 53 48

1½ 120 66 60

2 144 80 72

3 204 113 102

5 336 186 168

7½ 480 265 240

10 1000 332 300



5574 of 5603 11/18/2014 2:46 PM


Rated

Horsepower




1⁄2 40 23 22.1 20 10 83⁄4 50 28.8 27.6 25 12.5 10

1 60 34.5 33 30 15 12

1 1⁄2 80 46 44 40 20 16

2 100 57.5 55 50 25 20

3 — 73.6 71 64 32 25.6

5 — 105.8 102 92 46 36.8

7 1⁄2 — 146 140 127 63.5 50.8

10 — 186.3 179 162 81 64.8

15 — 267 257 232 116 93

20 — 334 321 290 145 116

25 — 420 404 365 183 146

30 — 500 481 435 218 174

40 — 667 641 580 290 232

50 — 834 802 725 363 290

60 — 1001 962 870 435 348

75 — 1248 1200 1085 543 434

100 — 1668 1603 1450 725 580

125 — 2087 2007 1815 908 726

150 — 2496 2400 2170 1085 868

200 — 3335 3207 2900 1450 1160

250 — — — — 1825 1460

300 — — — — 2200 1760

350 — — — — 2550 2040

400 — — — — 2900 2320

450 — — — — 3250 2600

500 — — — — 3625 2900




Olson_430.250.pdf PI Form


With the ever growing American Industry. Everything is being built larger on an exponential scale. With this growth in is not uncommon to see a 1000HP motor operating at 460 volts. The current table only goes up to 500HP. This can be confusing for inspectors and installers alike. According to 430.4 the motor table should be used for conductor size and short circuit protection. This will help clear up the confusion.


Submitter Full Name: Roy Olson

Organization: Muth Electric

Street Address:

City:


5575 of 5603 11/18/2014 2:46 PM

State:

Zip:

Submittal Date: Thu Jun 05 10:37:38 EDT 2014


5576 of 5603 11/18/2014 2:46 PM


Part XIV. Tables


The following values of full-load currents * are for motors running at base speed.

HorsepowerArmature Voltage Rating *


1 ⁄ 4 4.0 3.1 2.0 1.6 — —

1 ⁄ 3 5.2 4.1 2.6 2.0 — —

1 ⁄ 2 6.8 5.4 3.4 2.7 — —

3 ⁄ 4 9.6 7.6 4.8 3.8 — —

1 12.2 9.5 6.1 4.7 — —

1 1 ⁄ 2 — 13.2 8.3 6.6 — —

2 — 17 10.8 8.5 — —

3 — 25 16 12.2 — —

5 — 40 27 20 — —

7 1 ⁄ 2 — 58 — 29 13.6 12.2

10 — 76 — 38 18 16

15 — — — 55 27 24

20 — — — 72 34 31

25 — — — 89 43 38

30 — — — 106 51 46

40 — — — 140 67 61

50 — — — 173 83 75

60 — — — 206 99 90

75 — — — 255 123 111

100 — — — 341 164 148

125 — — — 425 205 185

150 — — — 506 246 222

200 — — — 675 330 294



The following values of full-load currents are for motors running at usual speeds and motors with normaltorque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permitted forsystem voltage ranges of 110 to 120 and 220 to 240 volts.

Horsepower115

Volts

200

Volts

208

Volts

230

Volts

1 ⁄ 6 4.4 2.5 2.4 2.2

1 ⁄ 4 5.8 3.3 3.2 2.9

1 ⁄ 3 7.2 4.1 4.0 3.6

1 ⁄ 2 9.8 5.6 5.4 4.9

3 ⁄ 4 13.8 7.9 7.6 6.9

1 16 9.2 8.8 8.0


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Horsepower115

Volts

200

Volts

208

Volts

230

Volts

1 1 ⁄ 2 20 11.5 11.0 10

2 24 13.8 13.2 12

3 34 19.6 18.7 17

5 56 32.2 30.8 28

7 1 ⁄ 2 80 46.0 44.0 40

10 100 57.5 55.0 50


The following values of full-load current are for motors running at speeds usual for belted motors and motorswith normal torque characteristics. Current in the common conductor of a 2-phase, 3-wire system will be1.41 times the value given. The voltages listed are rated motor voltages. The currents listed shall bepermitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to

1000600 volts

.

Horsepower



115


1 ⁄ 2 4.0 2.0 1.0 0.8 —

3 ⁄ 4 4.8 2.4 1.2 1.0 —

1 6.4 3.2 1.6 1.3 —

1 1 ⁄ 2 9.0 4.5 2.3 1.8 —

2 11.8 5.9 3.0 2.4 —

3 — 8.3 4.2 3.3 —

5 — 13.2 6.6 5.3 —

7 1 ⁄ 2 — 19 9.0 8.0 —

10 — 24 12 10 —

15 — 36 18 14 —

20 — 47 23 19 —

25 — 59 29 24 —

30 — 69 35 28 —

40 — 90 45 36 —

50 — 113 56 45 —

60 — 133 67 53 14

75 — 166 83 66 18

100 — 218 109 87 23

125 — 270 135 108 28

150 — 312 156 125 32

200 — 416 208 167 43


The following values of full-load currents are typical for motors running at speeds usual for belted motors andmotors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listedshall be permitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550

to 1000to 600 volts.

HorsepowerInduction-Type Squirrel Cage and Wound Rotor Synchronous-Type Unity


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(Amperes)Power

Factor* (Amperes)

115Volts

200Volts

208Volts

230Volts

460Volts

575Volts

2300Volts

230Volts

460Volts

575Volts

2300Volts

1 ⁄ 2 4.4 2.5 2.4 2.2 1.1 0.9 — — — — —

3 ⁄ 4 6.4 3.7 3.5 3.2 1.6 1.3 — — — — —

1 8.4 4.8 4.6 4.2 2.1 1.7 — — — — —

1 1 ⁄ 2 12.0 6.9 6.6 6.0 3.0 2.4 — — — — —

2 13.6 7.8 7.5 6.8 3.4 2.7 — — — — —

3 — 11.0 10.6 9.6 4.8 3.9 — — — — —

5 — 17.5 16.7 15.2 7.6 6.1 — — — — —

7 1 ⁄ 2 — 25.3 24.2 22 11 9 — — — — —

10 — 32.2 30.8 28 14 11 — — — — —

15 — 48.3 46.2 42 21 17 — — — — —

20 — 62.1 59.4 54 27 22 — — — — —

25 — 78.2 74.8 68 34 27 — 53 26 21 —

30 — 92 88 80 40 32 — 63 32 26 —

40 — 120 114 104 52 41 — 83 41 33 —

50 — 150 143 130 65 52 — 104 52 42 —

60 — 177 169 154 77 62 16 123 61 49 12

75 — 221 211 192 96 77 20 155 78 62 15

100 — 285 273 248 124 99 26 202 101 81 20

125 — 359 343 312 156 125 31 253 126 101 25

150 — 414 396 360 180 144 37 302 151 121 30

200 552 528 480 240 192 49 400 201 161 40

250 — — — — 302 242 60 — — — —

300 — — — — 361 289 72 — — — —

350 — — — — 414 336 83 — — — —

400 — — — — 477 382 95 — — — —

450 — — — — 515 412 103 — — — —

500 — — — — 590 472 118 — — — —




Rated

Horsepower




½ 58.8 32.5 29.4

¾ 82.8 45.8 41.4

1 96 53 48

1½ 120 66 60

2 144 80 72

3 204 113 102

5 336 186 168

7½ 480 265 240

10 1000 332 300

Table 430.251(B) Conversion Table of Polyphase Design B, C, and D Maximum Locked-Rotor Currents forSelection of Disconnecting Means and Controllers as Determined from Horsepower and Voltage Rating and


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Design Letter


Rated

Horsepower




1 ⁄ 2 40 23 22.1 20 10 8

3 ⁄ 4 50 28.8 27.6 25 12.5 10

1 60 34.5 33 30 15 12

1 1 ⁄ 2 80 46 44 40 20 16

2 100 57.5 55 50 25 20

3 — 73.6 71 64 32 25.6

5 — 105.8 102 92 46 36.8

7 1 ⁄ 2 — 146 140 127 63.5 50.8

10 — 186.3 179 162 81 64.8

15 — 267 257 232 116 93

20 — 334 321 290 145 116

25 — 420 404 365 183 146

30 — 500 481 435 218 174

40 — 667 641 580 290 232

50 — 834 802 725 363 290

60 — 1001 962 870 435 348

75 — 1248 1200 1085 543 434

100 — 1668 1603 1450 725 580

125 — 2087 2007 1815 908 726

150 — 2496 2400 2170 1085 868

200 — 3335 3207 2900 1450 1160

250 — — — — 1825 1460

300 — — — — 2200 1760

350 — — — — 2550 2040

400 — — — — 2900 2320

450 — — — — 3250 2600

500 — — — — 3625 2900



These table values are set for nominal voltage systems that motors are currently manufactured for. The High Voltage task group did not take into account motors that do not exist in a voltage range of 550 to 1000 volts. And if such motors do exist the current values in the tables under the 575 volt column may not necessarily be correct for the range of 550 to 1000 volts. The next nominal voltage system for which motors are manufactured for is already listed at 2300 volts.The table system voltage range should revert back to 550 to 600 volts to reflect the standard voltage ranges for which these motors are currently manufactured.


Submitter Full Name: WILLIAM GROSS

Organization: Tri-City Electric

Street Address:

City:

State:


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Submittal Date: Thu May 01 09:17:38 EDT 2014


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(B) Multimotor and Combination-Load Equipment.

Multimotor and combination-load equipment shall be provided with a visible nameplate marked with themaker's name, the rating in volts, frequency and number of phases, minimum supply circuit conductorampacity, the maximum rating of the branch-circuit short-circuit and ground-fault protective device, and theshort-circuit current rating of the motor controllers or industrial control panel. The ampacity shall becalculated by using Part IV and counting all the motors and other loads that will be operated at the sametime. The branch-circuit short-circuit and ground-fault protective device rating shall not exceed the valuecalculated by using Part III. Multimotor or combination-load equipment for use on two or more circuits shallbe marked with the above information for each circuit.

Exception No. 1: Multimotor and combination-load equipment that is suitable under the provisions of thisarticle for connection to a single 15- or 20-ampere, 120-volt, or a 15-ampere, 208- or 240-volt,single-phase branch circuit shall be permitted to be marked as a single load.

Exception No. 2: The minimum supply circuit conductor ampacity and the maximum rating of the branch-circuit short-circuit and ground-fault protective device shall not be required to be marked on a room airconditioner complying with 440.62(A) .

Exception No. 3: Multimotor and combination-load equipment used in one- and two-family dwellings , orcord-and-attachment-plug-connected equipment , or equipment supplied from a branch circuit protectedat 60 A or less shall not be required to be marked with a short-circuit current rating.


This change is necessary because there are numerous commercial and institutional buildings where unmarked HVAC equipment (no marking of short-circuit current rating) is being installed because the equipment is protected with a 60 ampere or less overcurrent protective device. Unfortunately, the available short-circuit current at many of these commercial and institutional locations exceeds 5,000 amperes available, and often approaches 25,000 amperes, or more. In those cases where the available short-circuit current exceeds 5,000 amperes, the inspector is left with no tools to force a proper application of the HVAC equipment, which has a 5,000 ampere rating, but is unmarked. This change will provide the inspector with the ability to check to be sure that the equipment is being installed and utilized in a safe manner. It should be noted that the exception for one and two family dwellings and cord-and-attachment-plug-connected equipment remains.




Street Address:

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(B) Multimotor and Combination-Load Equipment.

Multimotor and combination-load equipment shall be provided with a visible nameplate marked with themaker's name, the rating in volts, frequency and number of phases, minimum supply circuit conductorampacity, the maximum rating of the branch-circuit short-circuit and ground-fault protective device, and theshort-circuit current rating of the motor controllers or industrial control panel. The ampacity shall becalculated by using Part IV and counting all the motors and other loads that will be operated at the sametime. The branch-circuit short-circuit and ground-fault protective device rating shall not exceed the valuecalculated by using Part III. Multimotor or combination-load equipment for use on two or more circuits shallbe marked with the above information for each circuit.

Exception No. 1: Multimotor and combination-load equipment that is suitable under the provisions of thisarticle for connection to a single 15- or 20-ampere, 120-volt, or a 15-ampere, 208- or 240-volt,single-phase branch circuit shall be permitted to be marked as a single load.

Exception No. 2: The minimum supply circuit conductor ampacity and the maximum rating of the branch-circuit short-circuit and ground-fault protective device shall not be required to be marked on a room airconditioner complying with 440.62(A) .

Exception No. 3: Multimotor and combination-load equipment used in one- and two-family dwellings,cord-and-attachment-plug-connected equipment, or equipment supplied from a branch circuit protectedat 60 A or less shall not be required to be marked with a short-circuit current rating.


This change is necessary because there are numerous commercial and institutional buildings where unmarked HVAC equipment (no marking of short-circuit current rating) is being installed because the equipment is protected with a 60 ampere or less overcurrent protective device. Unfortunately, the available short-circuit current at many of these commercial and institutional locations exceeds 5,000 amperes available, and often approaches 25,000 amperes, or more. In those cases where the available short-circuit current exceeds 5,000 amperes, the inspector is left with no tools to force a proper application of the HVAC equipment, which has a 5,000 ampere rating, but is unmarked. This change will provide the inspector with the ability to check to be sure that the equipment is being installed and utilized in a safe manner. It should be noted that the exception for one and two family dwellings and cord-and-attachment-plug-connected equipment remains.



Organization: City of Phoenix AZ

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City:

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2355 of 5603 11/18/2014 2:46 PM


440.9 New—Ground and Bonding.

Where equipment is installed outdoors on a roof, a grounding conductor of the wire type shall be installed inmetallic raceway systems that use non-threaded fittings.

Exception No. 1

In industrial installations, with written safety procedures, where conditions of maintenance and supervisionensure that only qualified persons service the equipment.


Conduits installed per code over a period of time are stepped on, moved for re-roofing jobs, snow removal, etc. This supplemental ground would ensure that continuity will be maintained if and when the conduit separates. There have many instances where the conduit has separated and the hot wire insulation has been compromised thus energizing the conduit. Reaching down and attempting to put the conduit back together can cause a current path through the heart. From our own experience we have seen this happen and only because of proper safety practices has disaster been avoided. This is subjecting installers to unnecessary hazards. Numerous state codes now require a supplement ground in any conduit running across a roof. The argument that this type of raceway system should not have been installed because it is exposed to damage does not take into account that these systems have been installed on roofs for many years and are an accepted installation practice. This proposal is not to say that non-threaded systems are not good ground return paths, but this will ensure the safety of anyone that may be working on the roof and servicing the raceway/equipment.


Submitter Full Name: Terry Cole

Organization: Hamer Electric, Inc.

Affilliation: IEC

Street Address:

City:

State:

Zip:

Submittal Date: Fri Jul 18 17:08:17 EDT 2014


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New Section 440.9 Rooftops .

Electrical Metal Tubing shall not be permitted for rooftop HVAC installations.


It is an undisputed fact that after installation, EMT installed on rooftops is often subjected to severe physical damage. Damage to the EMT that causes the couplings or connectors to separate from the tubing results in an unsafe condition for personnel, because the EMT is permiited to be used as an equipment grounding conductor per 250.118 and 358.60, but now is ineffective to clear a ground fault, and would leave the HVAC unit or the EMT energized in a ground-fault condition. The damage that occurs after installation usually comes from snow removal equipment, or persons re-roofing the building. The EMT is secured to the existing rooftop, and either isn't seen under the snow; or is in the way for roofers, and must be lifted or moved out of the way in order for the new roof to be installed. During these activities, the EMT is moved and couplers / connectors are often separated. Concerns raised and Code proposals submitted to address this issue have been responded to in this manner, that EMT is not permitted per - "Section 358.12(1). Where, during installation or afterward, it will be subject to severe physical damage." Past proposals to correct the unsafe condition of no equipment grounding to the HVAC unit because the tubing couplings or connectors are separated or broken - have been met with the response - " don't install the EMT where it will be subject to severe physical damage". Okay, understood.

Since proposals to add a simple equipment grounding conductor to the branch circuit or feeder have not made it into the NEC, it is only logical to conclude that:

1. An equipment grounding conductor installed in the rooftop raceway is not required in EMT to improve the safety of the installation because the raceway is fully qualified as an EGC and stands on its own. 2. EMT is not permitted to be installed where subject to severe physical damage. 3. EMT is acknowledged to be subject to severe physical damage when installed on a rooftop. 4. Therefore, EMT must be prohibited from use for rooftop HVAC installations because it is, more often than not, subjected to severe physical damage.

Apparently, we are to conclude that the idea of requiring installing a relatively inexpensive insulated green colored equipment grounding conductor in the EMT raceway to provide safety for personnel is a bad idea?

Even though some states and municipalities recognized the personnel safety issue and adopted requirements for an EGC in years ago?

The NITMAM regarding the installation of an insulated equipment grounding conductor in EMT for HVAC installations came within 1 vote of passing at the NFPA Annual Meeting in Chicago last year.

Please take another look at this, and require the wire type equipment grounding conductor sized in accordance with NEC Section 250.122 to be installed in the rooftop EMT raceway.

Thank you for your thoughtful consideration of this safety issue - it's about personnel safety, which is the stated purpose of the NEC, found in Section 90.1. In my view, this issue should be about except personnel safety.


Submitter Full Name: MICHAEL WEITZEL

Organization:

Street Address:

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2358 of 5603 11/18/2014 2:46 PM


NEW SECTION 440.9

Where installed on rooftops to supply electrical power to heating, ventilating, or air conditioning equipment, awire-type equipment grounding conductor shall be included in the wiring method, and sized in accordancewith Section 250.122.


EMT - also known as Thinwall tubing - a very useful wiring method. However, when installed on a roof, eventually a roof needs replaced, or snow falls on a roof, and the roofers or snow removal personnel / snowbladers move or strike the EMT with equipment, and often cause it severe physical damage. Severe damage to the EMT causes the couplers to separate sections of EMT, rendering it no longer effective on its own as a ground-fault current path. This severe damage to the EMT can be a serious hazard, as ground-faults do occur on HVAC equipment, particularly when the EMT is severely damaged. I personally know of two electricians who have experienced this. What is the solution? Section 358.12 states that EMT shall not be installed where subject to physical damage. But, owners and contractors like to use EMT as a wiring method. The issue is to prevent a safety hazard by lack of a ground fault current path.A great solution to this issue is to require a wire type equipment grounding conductor to be installed in the EMT.

In the State of Washington, EMT installed in any wet location requires a wire type equipment grounding conductor to be installed in the EMT, and sized accordance with Section 250.122. This recognizes that EMT is a preferred wiring method, but can have issues with when installed outdoors over a long period of time. Contractors are happy because they can install and use a preferred wiring method, and safety concerns are addressed to help prevent electric shock and fire. Therefore, everyone is happy, and we can do business.


Submitter Full Name: MICHAEL WEITZEL

Organization:

Street Address:

City:

State:

Zip:



2357 of 5603 11/18/2014 2:46 PM


440.10 Short-Circuit Current Rating

Motor controllers of multimotor and combination load equipment shall not be installed where the availablefault current exceeds its short-circuit current rating as marked in accordance with 440.4(B).


440.4(B) requires that the equipment short-circuit current rating be marked on certain HVAC equipment. This proposal specifically requires that the marked HVAC equipment not be installed where the available short-circuit current exceeds the marked short-circuit current rating. This proposed requirement is similar to 670.5 (industrial machinery) and 409.22 (industrial control panels).




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2360 of 5603 11/18/2014 2:46 PM


Grounding & Bonding.

Outdoor portions of wiring methods that do not utilize threaded couplings and connectors shall include anequipment grounding conductor of the wire type when located on rooftops.


Steel electrical conduit and tubing has been shown to be an effective grounding path in many installations spanning several years when installed correctly. However, when installed on rooftops to supply rooftop HVAC equipment, some wiring method installations become compromised resulting in a potential safety issue for workers. This is a result of rooftop activities such as snow removal or roof repair/replacement, activities that take place well after the electrical contractor has left the job-site. When the roofing material is being replaced, the roofing contractor will raise the wiring methods up to a level that allows his employees to work under them. This causes stress at all connections and joints of the wiring method involved, in some cases resulting in a loosened or separated connection at a coupling or connector.

A recent study was conducted by the Independent Electrical Contractors (IEC) which determined this to be a commonly encountered problem. Over 50% of the respondents to the survey indicated they had either personally seen or heard from others cases where non-threaded wiring methods had loosened or become separated. 7% of the respondents indicated they received or knew someone who received a serious electrical shock as a result of conduit separation. How many shock incidents were never reported because it was felt to be non-serious? How many shock incidents were avoided altogether due to the installation of a wire-type EGC?

The proposal is only addressing wiring methods on rooftops because these are the wiring methods that would be subject to potential damage arising from snow removal or roofing activities. It also only addresses the outdoor portions of the wiring method, since indoors it is not likely to experience physical damage. A junction box could be mounted where the wiring method passes to the roof, and the wire-type equipment grounding conductor (EGC) could begin there by bonding to the box or enclosure. It also exempts wiring methods that utilize threaded connections at couplings and conduits as these are unlikely to separate.

This brings me to my final point in support of the proposed language. My position in the electrical trade allows/requires me to travel quite a bit. This enables me to meet with electrical industry representatives throughout the United States; contractors, electricians, etc. In my discussions, with the issue of rooftop equipment grounding in mind, I have made it a point to ask if they install wire-type EGC's in wiring methods in their areas. Overwhelmingly, those that I have asked stated that it is standard practice to install a wire-type EGC in wiring methods. In my area, I work with nearly 40 different contractors that engage in all aspects of the electrical trade - residential, commercial, industrial, telecommunications, etc. and there was not a single one that ever installs a wiring method without also installing a wire-type EGC. The point being that when this issue has come up in past revision cycles, I didn't even know why it was a big deal since in my area we always install the wire-type EGC anyway. To hear some of the arguments against accepting the previous proposals it was implied that this was adding a burdensome amount of additional cost to the project. This is not going to have a severe economic effect, since the portion of the circuit affected is limited to only the rooftop and a lot of installations include the wire-type EGC. This will provide protection for those rare instances that the wiring system installation has been damaged and the wire-type EGC is not installed. Regardless, economics shouldn't even be an argument, because the purpose of the NEC is to safeguard against hazards arising from the use of electricity. This is a safety issue and should be treated as such.


Submitter Full Name: Jebediah Novak

Organization: Cedar Rapids Electrical JATC

Affilliation: International Brotherhood of Electrical Workers

Street Address:

City:

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2359 of 5603 11/18/2014 2:46 PM




440.11 (A) 1 Available Fault Current. When Motor controllers or industrial control panels of multimotorand combination load equipment are required to be marked with a short circuit current rating, they shall belegibly marked in the field with the maximum available fault current. The field marking(s) shall include the datethe fault-current calculation was performed and be of sufficient durability to withstand the environmentinvolved.


As inspectors, we are having an extremely difficult time enforcing proper short-circuit current ratings of HVAC equipment. The HVAC manufacturers are properly marking the short-circuit current rating on the equipment, but there is typically no information on the job site as to the available short-circuit at the HVAC equipment. If the equipment were marked, in the field, similar to the requirements in NEC® 110.24, it would be much easier for us to assure that the equipment was being properly protected. We have a responsibility to the business owner to do the best job we can to help assure they are getting a building that is free of electrical hazards. This change would allow us to successfully fulfill that responsibility. Note that this “field marking” only applies where the equipment is marked with a short-circuit current rating, so it doesn’t apply to HVAC units protected at 60 amperes or less, to units for one- and two-family dwellings, or cord-and-attachment-plug connected equipment.




Street Address:

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2362 of 5603 11/18/2014 2:46 PM


(1) Ampere Rating.

The ampere rating shall be at least the branch-circuit selection current or 115 percent of the nameplaterated-load current or branch-circuit selection current , whichever is greater.

Exception: A listed unfused motor circuit switch, without fuseholders, having a horsepower rating not lessthan the equivalent horsepower determined in accordance with 440.12(A) (2) shall be permitted to havean ampere rating less than 115 percent of the specified current.


grammatically, the current text could be read as "115% of the nameplate rated-load current or 115% of the branch-circuit selection current..." By changing the order, it is unambiguous.


Submitter Full Name: ERIC STROMBERG

Organization: STROMBERG ENGINEERING

Affilliation: Myself

Street Address:

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2363 of 5603 11/18/2014 2:46 PM


440.14 Location.

Disconnecting means shall be located within sight from and readily accessible from the air-conditioning orrefrigerating equipment. The disconnecting means shall be permitted to be installed on or within theair-conditioning or refrigerating equipment.

The disconnecting means shall not be located on panels that are designed to allow access to theair-conditioning or refrigeration equipment or to obscure the equipment nameplate(s).

Exception No. 1: Where the disconnecting means provided in accordance with 430.102 (A) is lockable inaccordance with 110.25 and/or the refrigerating or air-conditioning equipment is essential to anindustrial process in a facility with written safety procedures, and where the conditions of maintenanceand supervision ensure that only qualified persons service the equipment, a disconnecting means withinsight from the equipment shall not be required.

Exception No. 2: Where an attachment plug and receptacle serve as the disconnecting means inaccordance with 440.13, their location shall be accessible but shall not be required to be readilyaccessible.

Informational Note No. 1: See Parts VII and IX of Article 430 for additional requirements.

Informational Note No. 2: See 110.26.


This allowance is in 46 plus other locations throughout the code and there doesn't appear to be a good reason to limit it to industrial facilities only. There are many ductless split systems where it may be an advantage to apply this exception as long as the manufacturer allows it. Also 422.31(B) already allows this for air condition appliances.


Submitter Full Name: ROBERT MCGANN

Organization: WOBURN ELECTRICAL SCHOOL

Street Address:

City:

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2365 of 5603 11/18/2014 2:46 PM


440.14 Location.

Disconnecting means shall be located within sight from, and readily accessible, from the air-conditioning orrefrigerating equipment. The disconnecting means shall be permitted to be installed on or within theair-conditioning or refrigerating equipment.

The disconnecting means shall not be located on panels that are designed to allow access to the air-conditioningor refrigeration equipment or to obscure the equipment nameplate(s).

Exception No. 1: Where the disconnecting means provided in accordance with 430.102(A) is lockable inaccordance with 110.25 and the refrigerating or air-conditioning equipment is essential to an industrialprocess in a facility with written safety procedures, and where the conditions of maintenance and supervisionensure that only qualified persons service the equipment, a disconnecting means within sight from theequipment shall not be required.

Exception No. 2: Where an attachment plug and receptacle serve as the disconnecting means in accordancewith 440.13, their location shall be accessible but shall not be required to be readily accessible.

Informational Note No. 1: See Parts VII and IX of Article 430 for additional requirements.

Informational Note No. 2: See 110.26.


File Name DescriptionApproved

Keith_Article_440.14PI20.pdf input form ✓


Without proper punctuation (commas), the sentence indicates that the disconnecting means has to be readily accessible from the equipment, not readily accessible as defined in Article 100. I had a contractor to argue that he could mount the disconnect eight (8) feet above the finished floor because the air-conditioning equipment was on an elevated platform. I believe that the intent of the section could be mis-interpreted.


Submitter Full Name: Kenneth Gene Keith

Organization: Inspec Group

Street Address:

City:

State:

Zip:

Submittal Date: Mon Dec 09 13:44:26 EST 2013


I, Kenneth Gene Keith, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights,including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I herebywarrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am Kenneth Gene Keith, and I agree to be legally bound by the above Copyright Assignment and the terms andconditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon my submission ofthis form, have the same legal force and effect as a handwritten signature

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Co...

1 of 1 11/25/2014 9:11 AM



440.15 Replacement Systems. Where air-conditioning or refrigeratng equipment is replaced with newsystems, the disconnecting means meeting the requirements of Part II of this article shall be of the fusible orbreaker type only, unless within sight of each unit(s) individual other overcurrent protection device(s).



ac_disconnect.jpg dwelling unit ac disconnect

fusible.jpg ac fusible disconnect


Oftentimes when a air conditioning or refrigerating equipment is changed out or replaced in residential or commercial installations the overcurrent protection for the new system does not match that of the older units. It is usually less amperage because of energy efficiency. Requiring the disconnects to be fusible will get the correct overcurrent protection where it can be properly monitored, serviced and inspected all at the same location. Where these systems are within sight of its original over current protection devices this change would not be needed. This change will only add to the safety aspect of these replacement systems.


Submitter Full Name: Mario Mumfrey

Organization: Inspection Bureau Inc.

Street Address:

City:

State:

Zip:



2364 of 5603 11/18/2014 2:46 PM


(A) Rating or Setting for Individual Motor-Compressor.

The motor-compressor branch-circuit short-circuit and ground-fault protective device shall be capable ofcarrying the starting current of the motor., and the rating of the device shall not be less than that requiredby Section 440.12 ( A )(1) . A protective device having a rating or setting not exceeding 175 percent of themotor-compressor rated-load current or branch-circuit selection current, whichever is greater, shall bepermitted, provided that, where the protection specified is not sufficient for the starting current of the motor,the rating or setting shall be permitted to be increased but shall not exceed 225 percent of the motorrated-load current or branch-circuit selection current, whichever is greater.

Exception: The rating of the branch-circuit short-circuit and ground-fault protective device shall not berequired to be less than 15 amperes.


Although the maximum is addressed by the NEC and/or the manufacturer, installers are increasingly attempting to use the smallest device possible in attempts to lower costs which may not carry the starting load sufficiently, and/or cause failure of the equipment. This places the burden of determining the starting loads capability on the Inspector.



Public Input No. 2725-NFPA 70-2014 [Section No. 440.22(B) [Excluding any Sub-Sections]]


Submitter Full Name: Ron Chilton

Organization: North Carolina Code Clearing Committee

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2366 of 5603 11/18/2014 2:46 PM

Public Input No. 2725-NFPA 70-2014 [ Section No. 440.22(B) [Excluding any

Sub-Sections] ]

The The equipment branch-circuit short-circuit and ground-fault protective device shall be capable ofcarrying the starting current of the equipment,

and the rating of the device shall not be less than that required by Section 440 . 12 (B)

. Where the hermetic refrigerant motor-compressor is the only load on the circuit, the protection shall complywith 440.22(A) . Where the equipment incorporates more than one hermetic refrigerant motor-compressor ora hermetic refrigerant motor-compressor and other motors or other loads, the equipment short-circuit andground-fault protection shall comply with 430.53 and 440.22(B)(1) and (B)(2).


Although the maximum is addressed by the NEC and/or the manufacturer, installers are increasingly attempting to use the smallest device possible in attempts to lower costs which may not carry the starting load sufficiently, and/or failure of the equipment. This places the burden of determining the starting loads capability on the Inspector.



Public Input No. 2724-NFPA 70-2014 [Section No. 440.22(A)] Similar provision


Submitter Full Name: Ron Chilton

Organization: North Carolina Code Celearing Committee

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2367 of 5603 11/18/2014 2:46 PM


440.32 Single Motor-Compressor.

Branch-circuit conductors supplying a single motor-compressor shall have an ampacity not less than thebranch-circuit selection current or 125 percent of either the motor-compressor rated-load current or thebranch-circuit selection current , whichever is greater.

For a wye-start, delta-run connected motor-compressor, the selection of branch-circuit conductors betweenthe controller and the motor-compressor shall be permitted to be based on 72 percent of either the motor-compressor rated-load current or the branch-circuit selection current, whichever is greater.

Informational Note: The individual motor circuit conductors of wye-start, delta-run connected motor-compressors carry 58 percent of the rated load current. The multiplier of 72 percent is obtained bymultiplying 58 percent by 1.25.


The way this section is written, the 125% could apply to both the rated-load current and the branch selection current. If the 125% is meant to only apply to the rated-load current, then switching the order would make it clear that the 125% does not apply to the branch circuit selection current.


Submitter Full Name: ERIC STROMBERG

Organization: STROMBERG ENGINEERING

Affilliation: myself

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Submittal Date: Sun Oct 12 11:51:17 EDT 2014


4644 of 5603 11/18/2014 2:46 PM


440.33 Motor-Compressor(s) With or Without Additional Motor Loads.

Conductors supplying one or more motor-compressor(s) with or without an additional load(s) shall have anampacity not less than the sum of each of the following:

(1) 125 percent of the rated-load or branch-circuit selection current ratings, ratings whichever is larger, ofthe highest rated motor-compressor

(2) Sum of the rated-load or branch-circuit selection current ratings whichever is larger, of all the othermotor-compressors plus the full-load currents of the other motors, plus 25 percent of the highest motor ormotor-compressor rating in the group in the group

(3) 100 percent of the noncontinuous non-motor load

(4) 125 percent of the continouos non-motor load .

Exception No. 1: Where the circuitry is interlocked so as to prevent the starting and running of a secondmotor-compressor or group of motor-compressors, the conductor size shall be determined from thelargest motor-compressor or group of motor-compressors that is to be operated at a given time.

Exception No. 2: The branch-circuit conductors for room air conditioners shall be in accordance with PartVII of Article 440.


Continuity of the code style.

Use similar wording and intent of NEC Art 430.24 involving Several Motor or Motors into 440.32


Submitter Full Name: Andrew Rolfe

Organization: Louisville Electrical JATC

Affilliation: IBEW Local 369, Louisville Electrical JATC

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Submittal Date: Tue Aug 05 07:57:12 EDT 2014


4645 of 5603 11/18/2014 2:46 PM


440.42 Available Fault Current

When motor controllers of multimotor and combination load equipment are required to be marked with ashort circuit current rating, they shall be legibly marked in the field with the maximum available fault current.The field marking(s) shall include the date the fault-current calculation was performed and be of sufficientdurability to withstand the environment.


HVAC manufacturers mark the short-circuit current rating on the equipment, but there is typically no information on the job site showing the available short-circuit at the HVAC equipment. If the equipment were marked in the field, it would be much easier for inspectors to ensure that the equipment was being properly protected. This change would also be useful when servicing the equipment and making sure that any replacement equipment is adequate for the available fault current. Note that this “field marking” only applies where the equipment is marked with a short-circuit current rating, so it doesn’t apply to HVAC units protected at 60 amperes or less, units for one- and two-family dwellings, or cord-and-attachment-plug connected equipment.




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2368 of 5603 11/18/2014 2:46 PM



The enclosures of room air conditioners shall be connected to the equipment grounding bonding conductorin accordance with 250.110, 250.112, and 250.114.






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2370 of 5603 11/18/2014 2:46 PM


440.65 Leakage-Current Detector-Interrupter (LCDI) and Arc-Fault Circuit Interrupter (AFCI) ProtectionDevices .

Single-phase cord- and plug-connected room air conditioners shall be provided with factory-installed LCDI,HDCI or AFCI protection. The LCDI or AFCI protection device shall be an integral part of the attachmentplug or be located in the power supply cord within 300 mm (12 in.) of the attachment plug.

Informational Note: A heat detecting circuit interrupter (HDCI) incorporates all of the protectionfunctions of an LCDI and also includes a thermal detecting function to provide protection againstoverheating of an air conditioner compressor.


Recently, a new protection device, the heat detecting circuit interrupter or HDCI has been developed. Per the UL guide information (KFGP2), the HDCI incorporates all of the protection functions of an LCDI but also includes a thermal detecting function to provide protection against overheating of the air conditioner’s compressor. Since the HDCI incorporates all of the protection functions of an LCDI, the HDCI should be permitted as an alternate to LCDI protection.


Submitter Full Name: Robert LaRocca

Organization: UL LLC

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2371 of 5603 11/18/2014 2:46 PM

Public Input No. 3172-NFPA 70-2014 [ Part I. ]

Part I. 1000 2 000 Volts, Nominal, and Under


The revision is required to correlate with proposed revisions to raise the LV voltage limit to 2000V and the division in the construction of conductors and equipment for LV and MV.

The NEC requires that products used in the electrical installation are suitable for the intended purpose based on the product instructions, labeling, and listing. The division in requirements between LV and HV installations was historically chosen based on the LV limit of 600V despite the construction and product standards requirements for HV beginning at voltages over 2000V. The limitation for low voltage installations and division of HV as applying to all voltages over 600V met the industry needs for many years. However, new challenges for better energy efficiency, microgrids, and integration of distributed sources into the electrical system require general adjustment to this limit. Revisions to product standards have addressed the necessary safety and performance concerns to permit products such as conductors, switches, fuses, and circuit breakers to have ratings exceeding 600V with constructions similar to LV products. In addition to available products, product standard revisions are in process for transfer switches. The demonstrated ability for product standards to develop the necessary materials, configuration, and testing of products for voltages up to 2000V should be acknowledged by the allowance of LV system ratings to this level.



Public Input No. 2947-NFPA 70-2014 [Section No. 215.2(A)] CMP2/All PIs

Public Input No. 3174-NFPA 70-2014 [Part II.]

Public Input No. 3178-NFPA 70-2014 [Part I.]

Public Input No. 3179-NFPA 70-2014 [Part II.]


Submitter Full Name: Chad Kennedy

Organization: Schneider Electric

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5490 of 5603 11/18/2014 2:46 PM

Public Input No. 3174-NFPA 70-2014 [ Part II. ]

Part II. Over 1000 2000 Volts, Nominal


The revision is required to correlate with proposed revisions to raise the LV voltage limit to 2000V and the division in the construction of conductors and equipment for LV and MV.





Public Input No. 3172-NFPA 70-2014 [Part I.] CMP11




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5505 of 5603 11/18/2014 2:46 PM



Capacitor cases shall be connected to the equipment grounding bonding conductor.

Exception: Capacitor cases shall not be connected to the equipment grounding bonding conductor wherethe capacitor units are supported on a structure designed to operate at other than ground potential.






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2431 of 5603 11/18/2014 2:46 PM


440.60 General.

The provisions of Part VII shall apply to electrically energized room air conditioners that control temperatureand humidity within dwelling facilities . For the purpose of Part VII, a room air conditioner (with or withoutprovisions for heating) shall be considered as an ac appliance of the air-cooled window, console, or in-walltype that is installed in the conditioned room and that incorporates a hermetic refrigerant motor-compressor(s). The provisions of Part VII cover equipment rated not over 250 volts, single phase, and theequipment shall be permitted to be cord- and attachment-plug-connected.

A room air conditioner that is rated 3-phase or rated over 250 volts within dwelling facilities shall be directlyconnected to a wiring method recognized in Chapter 3, and provisions of Part VII shall not apply.

Room air conditioning that is rated 3-phase or over 250v with trained supervision insuring maintenance orwith approved service contracts shall be permitted to be cord and plug connected with the ampacity ratingless than 30a and less than 1000v


a 5 ton room hvac at 1000v is only 5 amps even with the heat strip. three or four of these cord plug 5 amp loads can be placed on a 20 or 30 a circuit.




Affilliation: self

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2369 of 5603 11/18/2014 2:46 PM



Capacitor cases shall be connected to the equipment grounding bonding conductor. If the capacitor neutralpoint is connected to a grounding electrode conductor, the connection shall be made in accordance with PartIII of Article 250.

Exception: Capacitor cases shall not be connected to the equipment grounding bonding conductor wherethe capacitor units are supported on a structure designed to operate at other than ground potential.






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2432 of 5603 11/18/2014 2:46 PM


(A) Means to Reduce the Residual Voltage.

A means shall be provided to reduce the residual voltage of a capacitor to 50 actual volts or less within 5minutes after the capacitor is disconnected from the source of supply.








Organization: none


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2433 of 5603 11/18/2014 2:46 PM

Public Input No. 3178-NFPA 70-2014 [ Part I. ]

Part I. 1000 2 000 Volts, Nominal, and Under


The revision is required to correlate with proposed revisions to raise the LV voltage limit to 2000V and the division in the construction of conductors and equipment for LV and MV. Available products demonstrate that conductors and equipment rated 2000 volts will have similar construction and wiring methods as traditional LV equipment.









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5491 of 5603 11/18/2014 2:46 PM

Public Input No. 3179-NFPA 70-2014 [ Part II. ]

Part II. Over 1000 2000 Volts, Nominal


The revision is required to correlate with proposed revisions to raise the LV voltage limit to 2000V and the division in the construction of conductors and equipment for LV and MV. Available products demonstrate that conductors and equipment rated 2000 volts will have similar construction and wiring methods as traditional LV equipment.









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5506 of 5603 11/18/2014 2:46 PM



Resistor and reactor cases or enclosures shall be connected to the equipment grounding bondingconductor.

Exception: Resistor or reactor cases or enclosures supported on a structure designed to operate at otherthan ground potential shall not be connected to the equipment grounding bonding conductor.






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2434 of 5603 11/18/2014 2:46 PM

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