Week 5 Electrical Three Phase

8/2/2019 Week 5 Electrical Three Phase

1/123

Construction Measurement III(SBQ 3314)

Electrical Installations Three Phase

Lecture By Dr Sarajul Fikri Mohamed

Department of Quantity Surveying, FAB, UTM Skudai Johor, Malaysia

12 January 2010


2/123

Pre-cast and Pre-stressed ConcreteCIVIL WORKS

Electrical Installations

Fire Fighting Installations

Air Conditioning Installations

Unit/Split Package/Central

Landscape Works

Single Phase Three Phase

Gas Installations

ELECTRICAL WORKS

MECHANICAL WORKS

LANDSCAPE WORKS

Hard Landscape Soft Landscape

MAIN COURSE COMPONENTS


3/123

2009 Sarajul Fikri Mohamed

1. Electrical installations: main components

2. SMM2 measurement rules for electrical installations: three phase

3. Taking off list for electrical installations: three phase

4. Heading and description.

5. Case study: CADANGAN MEMBINA DEWAN SERBAGUNA TAMAN

KOTA JAYA, KOTA TINGGI, JOHOR

6. Studio work

Table of contents

ELECTRICAL INSTALLATIONS: THREE PHASE


4/123


Electrical installation

and components


5/123

Electrical distribution

ELECTRICAL INSTALLATIONS

Power transmission and distributions


6/123

Types of electrical work


Two options


7/123

Voltan yang dikenakan ialah 415 v dan juga boleh mencecah 880 v bagikilang yang menjalankan kerja berat seperti kilang besi dan kilang simen.

Ia mempunyi tiga pengalir hidup dan neutral.

Pengalir-pengalir hidup dikenalkan dengan kod-kod aksara berikut:

LI atau R (red): Fasa pertama

L2 ataU Y (yellow): Fasa kedua

L3 atau B (blue) : Fasa ketiga

Single and three phase


Bagi penggunaan rumah kediaman, voltan tiga fasa adalah terlalu tinggi dan

merbahaya.

Oleh itu voltan rendah daripada satu fasa lebih sesuai digunakan untuk tujuan

domestik.

Voltan piawai satu fasa ialah 240 v. Biasanya satu pengalir hidup digunakanbersama pengalir neutral iaitu:

RN

YN

BN

Three Phase

Single Phase


8/123


INCOMING SERVICES

MAIN INSTALLATION

POWER INSTALLATION

LIGHTING INSTALLATION

CABLES

Main components


ELECTRICAL APPLIANCES

CONDUIT AND FITTING

LIGHTNING PROTECTION SYSTEM

TESTING


9/123

Electrical distribution


INCOMING SERVICES

MAIN INSTALLATION

POWER INSTALLATION

LIGHTING INSTALLATION

ELECTRICAL APPLIANCES

FINAL SUB-CIRCUIT

CABLE

CONDUIT

LIGHTNING PROTECTION

TESTING


10/123

POWER

INSTALLATION

LIGHTING

INSTALLATION

ELECTRICAL

APPLIANCES

3 pin switch socket Fluorescent light

Wall light

EXIT sign

High bay light

EL light

Exhaust fan

Sweep ceiling fan

CONDUIT &

FITTING

CABLES TESTING

Chased into brickwallCeiling level

2x1c/2.5mm PVC cable2x1c/1.5mm PVC cable

On completion of the electricalinstallation test all switches, switch

socket, wiring etc and make good

all defects an leave everything

perfect working order to the

satisfaction of the S.O and TNB

Main components



11/123

Electrical typical legend in M&E drawings



12/123


SMM2 measurement

rules


13/123

Measurement rules



14/123

14

Clause Description

R4-R5 Equipments and Control Gear

R6-R8 Fittings and Accessories

R9-R13 Conduits, trunking and cable tray

R14-R17 Cabling

R18 Final Sub-circuits

R19 Earthing

R20-R21 Ancillaries

R22 Sundries

R23-R24 Builders Work

Related SMM2 clauses



15/123

Measurement rules



16/123


THREE PHASE

PEMASANGAN ELEKTRIK UNTUK SEBUAH

BLOK HEMODIALYSIS DI HOSPITAL TANGKAK,

MUAR JOHOR

FOR

JKR (ELEKTRIK) NEGERI JOHOR

Fakulti Alam Bina


17/123

SPNDB LMCCB

SUB SWITCHBOARD

100ATPNMCCB

TPNDBP

EARTHING SYSTEM


18/123

LOKASIBILIK SUIS

BILIK SUIS


19/123

ELEMENT: ELECTRICAL SERVICES ubb/N/01

BIL UNIT KUANTITI

A Preamble

B

M 3.05

M 3.05

C

M 1.00

M 1.00

To Collection

All quantities in this bill are provisional quantities

subject to remeasurement upon construction of the

said item. The tenderer must allow for testing the

electrical installation and handling over of test

certificate to S.O.

Incoming Services-Externally (All Provisional)

25mm x 25mm Telekom PVC trunking from lightingarrestors run at high level and drops to computer

server.

100mm UPVC class 'D' pipe complete with long

bend extended beyond drain for entry of TNB,

incoming cable to MSB inclusive of excavation and

backfilling.

4 x 25mm pilestas (AC) cable in UPVC class 'D'

pipe (m/s) buried underground to TNB panel.

75mm x 38mm electrical trunking from meter to

DB/M3B.

Incoming Services-Internally (All Provisional)

Cadangan Membina Dan Menyiapkan Sebuah Makmal KomputerDi Sekolah Kebangsaan Sri

Selangor, Petaling Jaya, Selangor.

KETERANGAN HARGA

(RM)

JUMLAH

(RM)

INCOMING SERVICES -

EXTERNALLY

INCOMING SERVICES -

INTERNALLY


20/123

R.2 CLASIFICATION OF WORK

a. Incoming servicesb. Standby equipmentc. Mains installation-switch gears, sub-main cables.

d. Power installatione. Lighting installationf. Heating installationg. Electrical appliancesh. Electrical work

k. Clock installation

I. Sound distribution

m. Alarm systemn. Earthing system installation

p. Lightning protection installation

q. Special services

r. Any other installation

s. Trunking, ducting and cable trays

Measurement rules



21/123

LOCATION OF ELECTRICAL WORKS

R3 - Location of work

a. Internallyb. Externally

Measurement rules



22/123

ITEM DESCRIPTION UNIT

POWER INSTALLATION

(INTERNALLY)

Cable

A2 x 1C-2.5mm2 PVC insulated colour coded

cable as specified drawn into conduit.

M

Cl R.2.1(d)

Classification of work

Cl R.3.1(a)

Location of Work

Cl R.14.2

Generally

Cl R.15.2(a)

Cables


23/123

Measurement rules



24/123

EQUIPMENT AND CONTROL GEAR (NO)

R4 Equipment (generator, motors)

Control gear (isolator, switch fuses)

Packaged item described with a manufacturers detail.

Limiting dimension on size shall be given.

Connecting cable ends or cable tails shall be deemed to be

included with the item.

Platework and supporting steelwork Section P.

Measurement rules



25/123

SPNDB LMCCB

SUB SWITCHBOARD

100ATPNMCCB

TPNDBP

EARTHING SYSTEM


26/123

WALL MOUNTED SUB

SWITCH BOARD

MAIN SWITCH C/W

INDICATOR LIGHTS


BIL UNIT KUANTITI

D

NO 1

NO 1

NO 1

E

NO 2

NO 2

NO 4

To Collection

Mains Installation-Internally (All Provisional)

Metal clad main switch board of wall mounted floor

standing type model no. 3b and including 60A/100A

TPN cut-off fuse C/W neutral link, 75A TPN MCCB

and surge protector and all associated accessories.



KETERANGAN HARGA

(RM)

JUMLAH

(RM)

4 nos 13A 3pin switch socket outlets mounted under

of table complete with 2 x 2.5mm/1C PVC in

concealed UPVC trunking.

Wall mounted metal clad distribution board inclusive

60A TPN MCCB, 60A TPN current-operated 300mA

ELCB comprising 17 nos of 30A MCB, 5 nos of 20A

MCB, 6 nos aircond point and all associated

accessories.

PowerInstallation-Internally (All Provisional)


30A SPN MCB, 30A SPN current-operated 100mA

ELCB comprising of 13 nos 6A MCB and all

associated accessories.

3 nos 13A 3pin switch socket outlets mounted

300mm from first floor level complete with 2 x

2.5mm/1C PVC in concealed UPVC trunking.





27/123

To monitor and record the total amount of electrical

energy that is being consumed for the purpose of

charging consumers through the issuance of

electricity bills .

Property of TNB

2 types of meter

Analog

Digital

METERING BOARD

TNB CUT OUT FUSE

Consumers back up protection 2 purposes:

As a measure of back up protection to the fuse in theDistribution Board and also ELCB As mean of cutting of electrical supply to the consumers

when required Cutout fuse is connected to live wire and it is use to

control current supply. Both belong to TNB.


28/123

DISTRIBUTIONBOARD


BIL UNIT KUANTITI

D

NO 1

NO 1

NO 1

E

NO 2

NO 2

NO 4

To Collection

Mains Installation-Internally (All Provisional)

Metal clad main switch board of wall mounted floor

standing type model no. 3b and including 60A/100A

TPN cut-off fuse C/W neutral link, 75A TPN MCCB

and surge protector and all associated accessories.



KETERANGAN HARGA

(RM)

JUMLAH

(RM)

4 nos 13A 3pin switch socket outlets mounted under

of table complete with 2 x 2.5mm/1C PVC in

concealed UPVC trunking.


60A TPN MCCB, 60A TPN current-operated 300mA

ELCB comprising 17 nos of 30A MCB, 5 nos of 20A

MCB, 6 nos aircond point and all associated

accessories.

PowerInstallation-Internally (All Provisional)


30A SPN MCB, 30A SPN current-operated 100mA

ELCB comprising of 13 nos 6A MCB and all

associated accessories.








29/123

Excess current protection

MINIATURE CIRCUITBREAKERS (MCB)

An electromechanical or electro thermal devices which break the circuit in the caseof excess current It will cut off any faulty circuit immediately Sensitive to lightning 2 types of excess current protection:

Earth Leakage Circuit Breaker: ELCB Miniature Circuit Breaker: MCB

MCB


30/123

RCBO INSIDE ADISTRIBUTION BOARD

RCCB INSIDE A

DISTRIBUTION BOARD

To ensure freedom from risk of shock it is importantthat the earth connection linking the metalwork ofelectrical equipment has a very low resistance.

RCCB provide a possible solution. The current-operated type compare the current flowing in the lineand neutral of a circuit.

In the case of fault the current flow will no longer beequal and the device will disconnect the supply.

RESIDUAL CURRENT CIRCUIT BREAKER

(RCCB)


31/123

MAIN SWITCH BOARDTRUNKING FOR

UNDERGROUND CABLE

UNDER MAIN SWITCH

BOARD

Electrical typical legend in M&E drawings



32/123

Main switch


Locate at the main incoming supply of the consumers Distribution Board

The purpose is to cut all of the power supply to the consumer in the event thatany maintenance work needs to be carried out.

Connect, cut off and control the current if their any excess current.

A two terminal one way switch that contains fuse.

Main switch


33/123

Circuit breaker : ELCB


A mechanical device to connect and cutout circuit It will cut off any faulty circuit immediately Sensitive to lightning 2 types:

Earth Leakage Circuit Breaker: ELCB Miniature Circuit Breaker: MCB

ELCB


34/123

This is where distribution of electrical energy to various connected load takeplace inside the consumer premises.

It also distributes the path for the earthing and neutral wire, and acts asmeans of flowing leakage and return current respectively.

Distribution board



35/123

Miniature circuit breaker : MCB


MCB & FUSE


36/123

WIRING TO DISTRIBUTION BOARD

MAIN SWITCH AND ELCB

MAIN SWITCH

4 POLE ELCB


37/123

METERING BOARD

Equipment and Control Gear

Measurement rules


Manufacturers details and dimension on size


38/123

Usually for houses and small loaded.

Situated inside building.

Including equipment such as circuit breaker and fuse

SMM2 Refer to clause R.4.1(NO.)

Distribution board



39/123

EQUIPMENT SUPPORTS : R5

Equipment supports enumerated and described (NO)

Method of fixing given in the description with clauses R.1.5-6.

Measurement rules



40/123

FITTING AND ACCESSORIES (N0)

R6 Fittings (clock , alarm bells)

Accessories (socket outlets)

R7 Pendant fittings NO length stages 300mm

R8 Accessories - NO (in gang)

a) rated capacity

b) type

c) no. accessories in each gang

Measurement rules



41/123

Measurement rules



42/123

Switch socket outlet & socket

point.

Different Types for different

capacity. SMM2 Refer to clause R.18.2

(No.)

Measurement rules



43/123

SOCKET

Power installation



44/123

TV Co-axial socket outlet 1 gang 15A Switched

Socket Outlet

13A 2 gangswitched socket outlet

13A 2 gang switched

socket outlet with neon

Power installation



45/123

13A 2 gangs/s/o

13A 2 gangs/s/o with neon

Bell push switch

Telephonesocket

Power installation



46/123

Fluorescents Lights and

emergency light.

Specification refer to

manufacturer.

SMM2 Refer to clause

R.4.1(NO.)

Lighting installation



47/123

Fluorescent light

KELUAR emergency sign


48/123

Measurement rules



49/123

Fan, MATV point and

telephone point.

SMM2 Refer to clause R.6,R.22.1 (NO.)

Electrical appliance



50/123

Measurement rules



51/123

CONDUIT, TRUNKING AND CABLE TRAYS

R9.1 Conduit and fittings. (m)

a) type

b) size

c) specificationd) saddles & crampets pattern

e) nature of background

Except for final sub-circuit (measured overall conduit fittings)

e.g tees, elbows, bend, cover plates, bushes, locknuts, nipples,stopping-lugs and reducing bushes), short running lengths and

branches).

Measurement rules



52/123

PVC Conduit

Conduit, trunking and metal tray


Galvanized Iron Conduit


53/123


Classification :

a) conduits fixed to surfaces

b) conduits fixed in chases

c) conduits embedded in floor screeds

d) conduits embedded in concrete

Measurement rules



54/123

Conduit inside the suspended ceiling




55/123



Conduits fixed in chases

brickwall


56/123

Drilling works to chases wiring to the brickwall




57/123


R9.2 Special boxes, adaptable box, floor trap boxes,

purposes made boxes, rectangular junction boxes required fordrawing in cables , flameproof boxes & expansion joint

( N0 EXTRA OVER)

Measurement rules



58/123

Munson ring

Conduit support



59/123

Conduit Adaptor

(Isometric to PG Thread)

Coupling

Flange Coupling

Long Nipple Short Nipple

Solid Male

BendReducer

Conduit assecories



60/123

Stainless

Steel ChainLead

WasherNeoprene

Washer Stopping Plug

Locking Ring Locknut Female BushMale Bush

Conduit assecories



61/123

Terminal Box Angle Box Through Box

Inspection Elbow Branch Two

Way BoxTee Box

Conduit assecories


El i l d i


62/123

Electrical conduit


M t l


63/123


R9.3 Flexible conduits & extensible conduit (NO)

i) size ii) overall length iii) type

iv) size & type termination glands

R9.4 Components & special boxes (N0)

( for making connection of conduit in trunking )

Measurement rules


M t l


64/123

Measurement rules


M t l


65/123


R10.1 Trunking (m)

i) type

ii) size

iii) no & size compartment

iv) method of connecting

R10.2 Fitting (NO) and EXTRA OVER

R10.3 Connection between trunking & item of equipment &control gear use flanges and or the forming of apertures

(N0)

Measurement rules


T ki


66/123

A rectangular metal made system

that either horizontally or vertically

fixed to wall.

A good mechanical protection.

Made from 18 gauge steel sheet. Available size:

50mm x 50mm

70mm x 100mm

150mm x 75mm

150mm x 150mm

Equipped with bend, tee, and

junction.

Trunking


T ki


67/123

Cable and trunking use for connection from main to distribution board or

distribution board to socket. Size and Material.

SMM2 Refer to clause R.15, R.9 (M)

Trunking


Trunking fittings


68/123

90r Gusset Bend

Front Lid(Traditional)

90r Gusset Bend

Inside Lid

(Traditional)

45r BendOutside Lid

45r Bend

Front Lid

90r Gusset Bend

Front Lid45r Bend

Inside Lid

Trunking fittings



Selangor Petaling Jaya Se langor


69/123


BIL UNIT KUANTITI

I

ACSU starter panel. NO 1

Aircond point. NO 6

J

M 11.53

M 30.53

M 186.41

M 112.06

K

M 132.00

M 16.78

M 56.03

M 56.03

To Collection

Selangor, Petaling Jaya, Se langor.

KETERANGAN HARGA

(RM)

JUMLAH

(RM)

Cables In Concrete Buildings Internally (All

Provisional)

Electrical Appliances In Concrete Buildings

Internally (All Provisional)

Conduits And Fittings In Concrete Buildings

Internally (All Provisional)

20mm Galvanised Iron class 'B' conduits with screw

joints and run at underfloor level.

20mm Galvanised Iron class 'B' conduits with screw

joints and chased into brickwall.

2 x 6mm/1C in concealed UPVC conduits.

4 x 6mm/1C in concealed UPVC conduits.

2 x 1.5mm/1C in concealed UPVC conduits.

2 x 2.5mm/1C in concealed UPVC conduits.

50mm x 25mm underfloor trunking for power point.

75mm x 25mm underfloor trunking for computer

services.

Run at ceiling level

Fixed to wall using bracket

Measurement rules


70/123


R10.4 Pin racks (NO)

i) type; and ii) size

R11.1 Busbar Trunking (m)

Clauses R.10.1

a) type; b) width; c) rated capacity; and

d) method of capacity

R11.2 Tap-off units, feeder units, fire barries & the like (NO)

Measurement rules


Measurement rules


71/123

Measurement rules


Measurement rules


72/123


R12.1 Trays (m)

i) type; ii) width; and iii) method of jointing

R12.2 Stools (NO)


R12.3 Fitting (NO and EXTRA OVER )

Measurement rules


Cable tray


73/123

Cable tray


Measurement rules


74/123

Measurement rules


Measurement rules


75/123

CABLES

R15.1 Cables (m)

measured as the net length of the conduit, trunking or tray.

other cable measured as fix (without any allowance for sag)between boxes, equipment control gear, fittings, accessories

etc.

except for final sub-circuits.

Measurement rules



76/123

The conductors used in domestic installations are called cables andconsist of a conductor of low resistance such as copper and aluminiumsurrounded by an insulator of high resistance such as rubber andplastic.

Cable sizes are known by the nominal cross sectional area of theconductor and up to 2.5mm2 are usually of one strand.

Flexible PVC insulated cord

Types of wire


77/123

Types of wire


Measurement rules


78/123

Cables

R15.2 Cables (m)

i) type ii) size iii) classification

CLASSIFICATION

a) drawn into conduits or ducts

b) laid or drawn into trunking

c) laid or drawn into trunking and laced into ciucuit

d) fixed to surfaces

e) wrapped around pipework

f) laid in trenches

g) fixed to insulators in overhead lines

h) suspended from catenary cables

R15.4 Cable joints (NO)

R15.5 Line taps (NO)

i) size ii) type of cable iii) shrouds (type)

Measurement rules


Cable classification


79/123

Underground cable Fixed to wall Fixed in ceiling

Cable classification


Measurement rules


80/123

CABLE

R15.6 Cable termination glands (NO)

i) type & size of cable ii) type of gland

R15.7 Conduit: boxes, adaptable boxes & the like used with

cable termination glands (NO - separately)

i) type ii) size of cable iii) joint-boxes, sealing boxes (type)

R16.1 Components for supporting cable given in the descriptionof the cable stating type and spacing.

Alternatively, components of combination system (NO)

Measurement rules


Measurement rules


81/123

CABLE

R17 Connections to public mains, making good public highway and

other work which may only carried out by Public Undertaking

or Local Authority PROVISIONAL SUM

Measurement rules



82/123

CableLife

Neutral

P

ower

Fuse Box

Earth

Socket


83/123

Light Point

Switch

Cable

Final Sub-circuit

Life

Neutral

Lighting

Fuse Box

Final sub-circuit


84/123

Cable (m)

Final sub-

circuit (nos)

Stating the ampere rating

based on classification of point.


Measurement rules


85/123

FINAL SUB-CIRCUITS

R18.1 Distribution sheets and drawing showing layout shall be given.

R18.2 Points (NO)

i) cable & conduit installations

ii) ampere rating

iii) classification

CLASSIFICATION

a) Lighting points: one way or two way

b) Socket or switch socket pointsc) Immersion heater points, cooker outlet points etc.


Measurement rules


86/123


Measurement rules


87/123

EARTHING

R19.1 Tapes for earthing (m)

i) size; ii) type; andiii) type & spacing of saddles, cleats, clip holdfasts & the like

R19.2 Conductor connections & junctions (NO)


R19.4 Test clamps (NO)

i) type ii) size; and iii) method of connecting


Lightning protection system


88/123

Air Terminal

Cooper Tape

g g p y



Selangor, Petaling Jaya, Sela ngor.


89/123


BIL UNIT KUANTITI

NO 16

NO 16

H

M 29.00

Brass test c lamp complete with screws. NO 2

NO 2

NO 2

To Collection

HARGA

(RM)

JUMLAH

(RM)

25mm x 3mm copper tape at roof including propose

made copper or brass clips at 1000mm internals and

connecting to roof tapes.

500mm High Solid Copper air termination with

formed thread complete with bronze nut and

appropriate thickness copper air terminal base.

KETERANGAN

Lighting Installation-Internally (All Provisional)

(Cont'd)

3 x 36W recessed mounted fluorescent light fitting

with low loss ballast C/W acrylic diffuser 2 x

1.5mm/1C PVC in concealed UPVC conduits with

5A switch.

300mm x 300mm x 300mm deep concrete Earth

Electrode Chamber complete with concrete cover

from ground level, lightweight screed to prevent

ingres of water, 16mm solid drawn copper Earth

Electrode, copper tape and 50mm UPVC pipe.

3 x 36W recessed s urface fluorescent light fitting

with low loss ballast C/W acrylic diffuser 2 x

1.5mm/1C PVC in concealed UPVC conduits with

5A switch.

Lightning Protection-Externally (All Provisional)

COOPER TAPE

ELECTRODE CHAMBER

Earthing installation


90/123

Typical earth-electrode pit

Earthing using cooper stripEarthing & Bonding requirement


E th l t d it


91/123

Earth electrode pit

Cooper strip

Measurement rules


92/123

EARTHING

R19.5 Earth electrodes (NO)

i) type ii) size; and iii) driving electrode into ground

R19.6 Air termination points (NO)

i) type ii) size; and iii) method of connecting


Lightning protection installation


93/123

Air Termination (NO.)

Copper Tape Roof Conductor. (M)

SMM2 Refer to clause R.19.6, R.22.2, R.19.

g g


Measurement rules


94/123

ANCILLARIES

R20 Loose keys, tools, spares and the like (NO separately)

i) type; and ii) quantity

Rack for holding tools (NO)


Measurement rules


95/123

SUNDRIES

R22.1 Marking the position of holes, mortice, chases & the like

(ITEM)

R22.2 General earth bonding & earthing (ITEM)

R22.3 Disconnecting, setting aside & refixing equipment (ITEM)

R22.4 Temporary operating each installation (ITEM)

R22.5 Testing each installation (ITEM)R22.6 Preparing plans or diagrams of the installations (ITEM)


Measurement rules


96/123


M NT CT ICA S IC S / /




97/123


BIL UNIT KUANTITI

L Sundries

ITEM

M Testing

ITEM

To Collection

Test the lighting and fitting installation described in

specification.

On completion of the electrical installalion test all

switches switch sockets, wiring etc. and make good

all defects an leave everything perfect working order

to the satisfication of the S.O and TNB.

KETERANGAN HARGA

(RM)

JUMLAH

(RM)


98/123


Summary of

measurement rules

SUMMARY OF MEASUREMENT RULES


99/123

ITEM METHOD OF MEASUREMENT UNIT CLAUSE

1)Main Installation

sub main cables stating the type and size m R.2.1.c

meter panel shall be described with no R.4.2

manufacture's detail

specification

distribution board ditto no

cables stating the type, size and the m R.15.2

location ( net length )

conduits stating the type, external size m R.9.1

and the location

sundries

mark the holes & etc. stating the nature of works & item R.22.1

relevant particulars

general bonding each installation item R.22.2

testing ditto and stating particulars of item R.22.5

any special insurance cover

required by Employer




100/123


2) PowerInstallation

fittings & accessories

socket unless stated all shall be enumerated no R.6.1




and the location

final sub-circuit stating the ampere rating no R.18.2

sundries



general bonding each installation item R.22.2







101/123


3) Lighting Installation


switch unless stated all shall be enumerated no R.6.1




and the location


sundries


relevant particularsgeneral bonding each installation item R.22.2







102/123


4) Electrical Appliances


switch unless stated all shall be enumerated no R.6.1




and the location


sundries


relevant particularsgeneral bonding each installation item R.22.2







103/123


5) Earthing System

Installation

cables given in accordance with clause R.15 m R.19.1

copper tape stating the type & size m R.19.1

conductor connection stating the type & size no R.19.2

test clamps ditto & method of connecting no R.19.4earth electrodes ditto & driving electrodes into no R.19.5

groundshall be given

air termination stating the type & size & method of no R.19.6

connection

sundries



testing each installation and stating item R.22.5

particulars ofany special insurance

cover required by Employer




104/123


6) Builder's Work

excavating trenches for cables and pipe ducts n. exc. m R.24.1

55mm nominal size refer to clause

D.12.9 & exc. 55mm refer to clause

V.2cable covers stating the type & size m R.24.2



105/123


Taking off list

Taking off list


106/123


PREAMBLE

GENERAL NOTES

MAIN INSTALLATION

Meter panel (no)

Main Switch Board (no)

Distribution Board (no) Main & sub main cabling (m)

Conduit and trunking (m)

Sundries (item)

Testing (item)

POWER INSTALLATION Fittings and accessories

Socket (no)

Point (no)

Cables (m)

Conduits (m)

Final sub circuit (no) Sundries

Mark the holes (item)

General earth bonding (item)

Testing (item)


Taking off list


107/123


LIGHTING INSTALLATION Fittings & accessories Swicth (no) Point (no)

Final sub-circuit (no)

Sundries Mark the holes (item) General earth bonding (item) Testing (item)

LIGHTNING INSTALLATION Copper tape (m) Test clamps (no) Air termination (no) Earth chamber(no)

SundriesMark the holes (item) Testing (item) Builders work

- Excavation trenches (m)


TAKING OFF LISTSDOMESTIC HOUSING SING E


108/123

DOMESTIC HOUSING SINGLEPHASE

1.Main Installation

- meter panel no

- distribution board no

- cables m- conduits no

- sundries

= mark holes item

= general bonding item

= testing item

TAKING OFF LISTSDOMESTIC HOUSING SINGLE


109/123

2. Power Installation- fitting & accessories

= socket no

- cables m

-conduits m

- final sub-circuit no

- sundries

= mark holes item


= testing item




110/123

3. Lighting Installation- fittings & accessories

= switch no

- cables m- conduits m

- final sub circuit no

- sundries

= mark holes item


= testing item




111/123

4. Electrical Appliances- fitting & accessories

= switch no

- cables m

- conduits m- final sub circuit no

- sundries

= mark holes item


= testing item




112/123

5. Earthing System Installation- cables m

- copper tape no

- test clamps no- conductor connection no

- earth electrodes no

- air termination no

- sundries

= mark holes item

= testing item



113/123


Heading and description

ITEM DESCRIPTION UNIT QUANTITY


114/123

MAIN INSTALLATION(EXTERNALLY)

A Metering board to shop TNB kwh meter single

phase complete with cut out fuse, neutral link,

interconnecting cables and all necessary

accessories to TNB's requirementNO 1

B 150mm diameter corrogated pipe as specified

including all short running length extended

beyond drain.M 12

C 100mm diameter PVC pipe complete with long

bend extended beyond drain for entry of TNB

incoming cable to distribution board. M 21


115/123

POWER INSTALLATION (INTERNALLY)

Galvanised steel conduit with screw joint includingall short running lengths, bends, tees, saddles,

crampets, locknut and circular conduit box

A 20mm Diameter conduit chased in brickwall.M 36

B 20mm Diameter conduit fixed to ceiling.M 21

C20mm Diameter conduit embedded in floor screed. M 20




116/123

LIGHTING INSTALLATION (INTERNALLY)

Cable

A2 x 1C-2.5mm2 PVC insulated colour coded cable as

specified drawn into conduit.M 127

Fittings and Accessories

B 6 Ampere 1 gang 1 way wall mounted flush type switch for

light complete with PVC face plate mount to brickwall at

1200mm from finished floor level.

NO 2

C Final sub-circuit of galvanised steel conduit installation of

2 x 1.5mm2 PVC insulated cable drawn into galvanised

steel conduit (m/s) in circuit comprising of 1 lighting point.

NO 16



117/123


LIGHTNING PROTECTION INSTALLATION(EXTERNALLY)

A Lightning air terminal with approved hold fasts

including 25mm x 3mm copper tape and roof

conductor with and including gun conductor with earth

electrode.NO 1

B 25mm x 3mm bare copper tape fixed with and

including cast brass saddles at one metre centres

including bends, sets and saddles fix at roof.M 13

C Test clamp, size 20mm x 40mm connected to

conductor, screwed to brickwall vertically. NO 2


118/123


Case study


119/123

CASE STUDY

PROJECT TITLE

CADANGAN MEMBINA

DEWAN SERBAGUNA TAMAN KOTA JAYA

KOTA TINGGI, JOHOR

FOR

JKR (ELEKTRIK) NEGERI JOHOR

Fakulti Alam Bina


120/123


Studio work


121/123

STUDIO WORKELECTRICAL INSTALLATIONS THREE PHASE

PROJECT TITLEPEMASANGAN ELEKTRIK UNTUK SEBUAH

BLOK HEMODIALYSIS DI HOSPITAL TANGKAK,

MUAR JOHOR

FORJKR (ELEKTRIK) NEGERI JOHOR

Fakulti Alam Bina


122/123

SPNDB LMCCB

SUB SWITCHBOARD

100ATPNMCCB

TPNDBP

EA

RTHING

SYST

EM

BILIK SUIS


123/123

LOKASIBILIK SUIS

BILIK SUIS

Week 5 Electrical Three Phase

Documents

Transcript of Week 5 Electrical Three Phase