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1.General

The Electrical Standard Practices Manual (ESPM) gives descriptive data and procedures for theelectrical installations on all aircraft of the AIRBUS family.The standard practices information in this manual tells you how to do maintenance and repairs onthe standard electrical items and thus ensure the continued airworthiness of the aircraft.

NOTE:For the obsolescence/interchangeability status of the tools, refer to the Tool EquipmentManual. (TEM)

NOTE:The Electrical Standard Practices data related to Power Plant is shown in the AMM 70-71-XX.

NOTE:There are several Chapter 20, depending on the vendor responsible for the system (ECE,Honeywell, etc.) but whatever the vendor, their chapter 20 follows the same layout.

NOTE:For users of this manual

If you cannot find the data or a procedure you need to ensure the continued airworthiness

of the aircraft, or if you think that the information given is not complete, contact Airbus.

The ESPM is broken down in two main chapters:- Chapter 00 (common part) with:

- General, How to use (00-INTRO)- Indexes

- Chapter 20 with:- Safety Practices (20-10-00)- Tools (20-25-XX)- Subjects related to standard rules and recommendations (20-3X-XX):

Specific areas (20-31-XX)

.

Identification/marking (20-32-XX)

Wire harnesses (20-33-XX)- Subjects related to standard electrical items and connecting parts with their description(P/N identification and characteristics) and their related processes (connection procedure orconnection table) (20-4X-XX):

Sleeves, End Caps and Ferrules (20-42-XX)

.

Splices and Pressure Seals (20-43-XX)

Connectors and Terminal Blocks (20-44-XX)

Miscellaneous Electrical Items (20-45-XX)

Circuit breaker, Relay and Relay Base (20-46-XX)

Terminals and Contacts (20-48-XX)

- Subjects related to maintenance processes (20-5X-XX):Standard Processes (20-51-XX)

.

Inspection/Check and Test (20-52-XX)

Repair Processes (20-53-XX)

Protection during Maintenance Checks (20-54-XX)

Cleaning (20-55-XX)

If any part or all of the ESPM is translated, the official version is the original English-language version produced by AIRBUS.

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3.Definitions

A. Definition of Terms

The terms below are used in the ESPM and are defined as follows:- Standard Practices:

Standard industry practices that are not specific to AIRBUS aircraft.Procedures specific to AIRBUS aircraft and applicable to several systems.

- Torque:Term used when a procedure requires a specific torque value.- Tighten:

Term used when no specific torque value is required.- WARNING:

Calls attention to use of materials, processes, methods, procedures or limits that youmust obey precisely to prevent injury or death to persons.

- CAUTION:Calls attention to methods and procedures that you must obey to prevent damage toequipment.

- NOTE:Calls attention to methods which make the job easier or give supplementary orexplanatory information.

B. Part Number (P/N) Construction

It is only with a P/N (not with a FIN) that you can access to the ESPM information.The P/Ns listed in the ESPM are made up of two parts:- A basic element which is the standard number/family.- A suffix which defines the item.

e.g. Basic element (standard) + suffix(item) = Full P/N

NSA936504 TC0607

NSA936504TC0607

ASNE0261 CF24 E0261CF24

NOTE:For ASNE standards, the 3 letters "A, S, N" are omitted in the P/N.

For clarity, only the suffix (item) (e.g. E0617 for ASNE0617) is shown in the tables.

However, you can identify the full P/N because the applicable standard number is alwaysshown on the page. (In the title or/and on top of the table)

NOTE:For tool military part number (MIL), the P/N consists of the letter M and of the basicspecification number.

e.g.: M 81969 / 01-01

- ----- -- --

| | | |

| | | ----- Dash number from specification

sheet

| | -------- Specification sheet number

| -------------- General specification number

------------------ "M" Military part numberindicator

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9.How To Use:

This part of the ESPM gives the user basic information on how to use the manual efficiently.

A. Manual Structure

(1) Preliminary pages at the beginning of the ESPM

(a)Record of Revisions

This record gives the ESPM revision numbers and issue dates and is updated by the operator.

(b)Highlights (HL)The Highlights give the reason for revision changes.

(c)List of Temporary Revisions

This is the list of the temporary revisions (related to all chapters) which must be removed from themanual or which still stay effective.

(2) Preliminary pages at the beginning of each chapter

(a)Table of Contents (TOC)

Each chapter in the ESPM begins with a Table of Contents. The Table of Contents shows eachsection in the chapter and the subject material within the section.

(b) Record of Temporary Revision (ROTR)

The ROTR is not available on DVD and is superseded by the TR list paragraph, located in theManual Front Matter

(3)Manual Breakdown

Chapter breakdown is based on a 6-digit numbering system.Each chapter (XX) is broken down into sections (XX-Y).Each section (XX-Y) is broken down into subsections (XX-YY).Each subsection (XX-YY) is broken down into subjects and sub-subjects (XX-YY-NZ).

B.How to get access to the information?

The entry points below help you find the information you need:

(1)The Table of Contents (TOC)

This part gives a list of the topics contained in the chapter and the title of a subject covered ineach topic.

(2)The alphabetical index (CHAPTER 00 - INDEXES)

This part gives an alphabetical list of keywords and tells you which topics contain thesekeywords.

(3)The standard P/N index (CHAPTER 00 - INDEXES)The standard P/N indexes (one for each family of standard P/Ns) tell you which topics containdata related to the P/N.

(4)The equivalence tables (CHAPTER 00 - INDEXES)

NOTE: The ESPM does not cover all the electrical P/Ns, e.g.: old generation P/Ns that are nolonger used for repair and P/Ns that are not frequently used, are not covered.

For P/Ns not covered in the ESPM, you can refer to the Standards Manual (SM)which gives the specification of the standard P/N or an equivalent P/N you can use.You can then refer back to the ESPM for information related to that equivalent P/Ngiven in the SM.

C. Presentation Of Each Chapter

(1)20-42-XX: Sleeves and Ferrules

(Ref. Fig. 001)(Ref. Fig. 002)(Ref. Fig. 003)The selection is done according to:- The type of terminal on which the sleeve is installed.- The type and gauge of the cable.

(2)20-43-1X: Splices

(Ref. Fig. 004)

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(Ref. Fig. 005)(Ref. Fig. 006)(Ref. Fig. 007)The selection is done according to the type of cable to which the splice is to be connected.Use the splice allocation table (Ref. 20-53-29) to select the splice for cable repair purposes.

NOTE:When splices are added on cables, we recommend to start a COC procedure to updatethe related wiring diagram. (WDM)

(3)20-44-XX: Connectors

(Ref. Fig. 008)(Ref. Fig. 009)(Ref. Fig. 010)(Ref. Fig. 011)(Ref. Fig. 012)(Ref. Fig. 013)(Ref. Fig. 014)(Ref. Fig. 015)(Ref. Fig. 016)(Ref. Fig. 017)

(Ref. Fig. 018)The search for connectors generally comes from the need to repair, replace or install a connector.Therefore, at least the FIN is known and you can retrieve the related P/N with the help of the IPCor AWL.This chapter helps the user define the characteristics of the required connector, its contacts andthe related connection procedure.

(a) In Aircraft On Ground (AOG) situation

If a spare connector is not available, it can be possible to temporarily use the unused cavities ofthe damaged connector if AIRBUS agrees.You must contact AIRBUS to get a written agreement to use the unused cavities.AIRBUS will make an analysis of:

-Compliance with the applicable electrical segregation rules.

- The condition of the connector and type of damage.

-The general environnement of the connector.

- The status of the unused cavities of the specific aircraft. (There is no EO or STC that usesthese cavities)If you think that the damage can have an effect on the integrity of the connector, you mustnot use the unused cavities.This modification of the connector writing must have the agreement of AIRBUS and canonly be temporary. AIRBUS will specify the limitation time for each change.

(4)20-44-5X: Terminal Blocks

(Ref. Fig. 019)(Ref. Fig. 020)

(Ref. Fig. 021)(Ref. Fig. 022)(Ref. Fig. 023)For the selection of terminal block P/Ns, do as for the connectors, but you must do the allocationof terminals in relation to the type of cable and the type of equipment, and obey, in addition, theterminal stacking rules. (Ref. 20-51-40)

(5)20-46-5X: Relays and Relay Bases

(Ref. Fig. 024)(Ref. Fig. 025)(Ref. Fig. 026)

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For the selection of relay P/Ns, do as for the connectors. The only difference is to know if therelay is connected with or without a relay base.

(6)20-53-XX: Repair Processes

(Ref. Fig. 027)(Ref. Fig. 028)(Ref. Fig. 029)

(Ref. Fig. 030)(Ref. Fig. 031)(Ref. Fig. 032)(Ref. Fig. 033)The selection is in relation to:- The type.- The P/N.- The gauge of the cable.A repair method is proposed in relation to the damage found.These chapters give repair processes:20-53-2X Electrical Cable Repair Processes20-53-3X Conduit Repair Processes20-53-4X Bundles Attachments Repair Processes20-53-5X Standard Electrical Item Repair Processes

(7)Other topics: Find the full P/N

(Ref. Fig. 034)(Ref. Fig. 035)Sometimes the full P/N is not written on the electrical standard item (for example, for a cable onlythe cable type is shown), but for procurement the full P/N is necessary.You can find the full P/N in the other manuals (AWL, IPC, etc.) but for a cable it is necessary torefer to 20-32-21 to reconstitute the ful P/N.