Technical, policy & engineering documents

We have a technical information website specifically to provide detailed technical specifications and policy documents for connection providers working within our four licensed areas.

In addition, a suite of Ofgem national framework documents have been developed setting out common requirements for design and planning, material specification and installation and records. These are supplemented by local WPD appendices which must be read in conjunction with the national framework documents.

Please note that the attachments on this page are large files, and may take a few minutes to load

Engineering recommendation G81 Part 1 - Design & planning
Engineering recommendation G81 Part 2 - Materials specification
Engineering recommendation G81 Part 3 - Installation & records

Appendices
NGED G81 - 1 Design framework appendix
NGED G81 - 2 Materials framework appendix
NGED G81 - 3 Installation and record requirements for LV housing developments
NGED G81 Cable recording techniques framework appendix
A connection provider may provide diversionary or reinforcement work that is directly associated with a new or augmented connection at voltage levels not exceeding 33 kV. The scope of such work is set out within a further national framework document. Please click on the link below.
Engineering recommendation G81 Part 7 - Contestable diversionary and reinforcement underground and overhead work not exceeding 33 kV and HV/LV distribution substations.
NGED have a published set of Distribution Safety Rules (DSR's) which are in place for the protection of employees and the safety of all who may work on distribution network operator systems.
A copy of the DSR's can be viewed here.