Guidelines and manuals

The following information is provided for those seeking guidance and assistance in planning and achieving a new development or connection to our distribution network.

Note: these documents are subject to change and it is recommended that you check the currency of any documentation on a regular basis.

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Underground distribution schemes (UDS) manual

UDS manual - Edition 10 (PDF 6.1Mb - Large file)  
Last updated: September 2013

This 10th edition of the Underground Distribution Schemes (UDS) Manual supersedes all previous editions of this Manual.

The implementation of the 10th edition of the manual shall apply to projects from the 22nd of October 2013 as follows:

  1. Project designs issued with a DIP package prior to the publication of this edition of the UDS may be completed in accordance with the requirements of the 9th edition of the UDS Manual if completed within Western Power's issued information package validity period, that is within 6 months from the date of issue. (Refer clause
  2. Where work has commenced or formal contracts to undertake UDS works were signed prior to the publication of these requirements Western Power may grant permission, on receipt of an application, for exemption from these amended requirements.  Exemption will not be granted where there is a safety concern.
  3. The amended information contained within 10th edition Manual and subsequent amendments is not retrospective from the date of publication unless an existing development or part thereof constitutes a safety issue as determined by Western Power.

This manual contains the information required by developers and their electrical consultants to allow them to undertake the electrical reticulation of new subdivisions.

Submit feedback on the UDS manual

We encourage you to use the UDS feedback form to submit feedback on any aspect of the updated manual.

 Design information package

Guideline for requesting DIP (PDF 68kb)
Last updated: October 2005
A developer’s consultant or designer will need to contact us to register responsibility for the design of an underground distribution scheme for a subdivision and request a DIP.

Underground cable installation (UCI)

UCI manual part II - technical requirements revision A (PDF 535kb)
This formalises requirements for the safe and efficient installation of underground cables that are to be connected to our public distribution system.


Western Australian electrical requirements (WAER)

EnergySafety has completed a comprehensive review and published a new 2014 edition of the WAER. A copy can be downloaded by clicking WAER 2014.

The new WAER will apply from 1 July 2014 and all new electrical installation designs commenced after that date must comply with the new requirements.  Designs started before 1 July 2014, and projects under construction or for which building contracts are signed at that date, may comply with the July 2008 version of the WAER.

The WAER as published by EnergySafety is an authoritative and mandatory technical reference for the safe and efficient connection of the customer’s installation to an electricity network. We need to meet the legislated WAER and relevant Australian Standards through our policies, standards and workmanship.

Western Australian distribution connections manual

The purpose of WADC manual (PDF 6.4mb - large file) is to provide a comprehensive single point of reference for industry and community when seeking an electrical connection of a customer’s installation to the distribution network of:

  • Horizon Power’s North West interconnected system (NWIS)
  • Horizon Power’s regional non-interconnected systems (RNIS)
  • Western Power’s South West interconnected system (SWIS)

This manual supersedes the following our previously published documents including:

  • Transitional (interim edition) connections manual (issued August 2008)
  • Substation standards DSB 95/5 (issued April 2009) and DSB 95/6 (issued May 2009) 
  • The metering requirements (issued September 2006)
  • 415 Volt switchboard - current transformers, meter panels and wiring (issued June 2004)
  • Policy and technical requirements for AMR systems (DMS 1401689 v13)
  • Service protection devices (issued June 2003)

Submit feedback on the WADC

Western Power and Horizon Power welcome feedback on any aspect of the Western Australian Distribution Connections Manual and its application.

More information

For more information see the complete list of guidelines and manuals or contact our customer services centre on 13 10 87 or