Guidelines for Whole Electricity System Investment Planning

Technical specification for plastic ducts for buried electric cables

Pole Mounted, Non-Enclosed: Switch Disconnectors, Disconnectors, Earthing Switches, Fuse Switches (Expulsion fuses), Solid Links and Automatic Sectionalising Links (ASLs)

Selection and treatment of wood poles and associated timber for overhead lines

Voltage testing devices

Guidance on transferred voltages from earthing systems

Guide to the assessment of power system products for use by the ENA Member Companies

Part 2A: Procedure for the conformity assessment of switchgear products

Guide to the assessment of power system products for use by the ENA Member Companies

Part 2D: Procedure for the conformity assessment of protection products

Protection of telecommunication lines from power lines (2018) Amendment 1 (2020)

Tap-changers for system voltages up to and including 132 kV

Multi Service Distribution Boards + Amendment 1 2020

Guide to the assessment of power system products for use by ENA Member Companies
Part 1: Common principles for the conformity assessment of products

Technical Specification TS 12-23 Issue 4 2018 + Amendment 1 2020

Plastics warning tape, polyethylene protection tape, polyethylene protection tiles, and cable route marker posts for buried electricity supply cable

MV Cables Crossing Bridges - Physical Protection and Current Ratings

Vegetation management near electricity equipment - principles of good practice

Procedure to meet the requirements on IEC 60909 for the calculation of short-circuit currents in threephase AC power systems Effective from 1st July 2021

Analysis package for assessing the security contribution from distributed generation and electricity storage systems – Users’ guide

Analysis Package For Assessing Generation Security Capability - Users' Guide

Harmonic voltage distortion and the connection of harmonic sources and/or resonant plant to transmission systems and distribution networks in the United Kingdom

Current rating guide for high voltage overhead lines operating in the UK distribution system

Application of electrical, electronic, and programmable electronic systems in safety-related systems in the electricity industry

Ground Mounted Distribution Substation 12 to24 kV Rated RMU & Extensible Switchgear

Electrical safety in the planning, installation, commissioning and maintenance of public lighting and other street furniture

Operational procedures for aerial inspection of overhead lines in the ESI

Recommendations for the connection of mobile Generating Sets to public distribution networks

Guidance on the management of fused neutral cut-out

Issue 1 Amendment 6

Requirements for the connection of generation equipment in parallel with public distribution networks on or after 27 April 2019

Switchgear current ratings at reduced ambient temperature

Withdrawable Retrofit Ground Mounted 12 kV to 36 kV Rated Indoor Circuit-breakers

Engineering Recommendation for Telecommunication Providers and Distribution Network Operators Joint Use of Poles

Distribution transformers Part 1 Common clauses

Functional Test Requirements Line Differential Protection

Functional Test Requirements – Voltage Protection + Amendment 1 2020

Functional Test Requirements – Frequency Protection + Amendment 1 2020

Switchgear for service up to 36 kV (Cable and Overhead conductor connected)

Model code of practice covering electrical safety in the planning, installation, commissioning and maintenance of public lighting and other street furniture

Functional Test Requirements – Loss of Mains Relays

Procedure for the Conformity Assessment of Plant & Products for use by the Energy Networks Association Member Companies Part 2a: Procedure for the Conformity Assessment of Switchgear.

Overhead Line Clearances

Principles For The Planning, Connection And Operation Of Electricity Distribution Networks At The Interface Between Distribution Network Operators (DNOs) And Independent Distribution Network Operators (IDNOs)

Safe tree working in proximity to overhead electric lines.

Polyethylene Warning Tape, Polyethylene Protection Tape and Polyethylene Protection Tiles for Buried Electricity Supply Cable

Procedure for the Conformity Assessment of Plant & Products for use by the Energy Networks Association Member Companies

Procedure for the Conformity Assessment of Plant & Products for use by the Energy Networks Association Member Companies Part 2d: General Description and Information for Suppliers of Products and Systems

Specification for single circuit overhead lines on wood poles for use at high voltage up to and including 33 kV

ENA Protection Assessment - Functional Test Requirements - Distance Protection

ENA Protection Assessment - Functional Test Requirements - Feeder Unit Protection

ENA Protection Assessment Functional Test Requirements - Transformer Protection

Planning Levels for harmonic Voltage Distortion and the Connection of Non-Linear Equipment to Transmission Systems and Distribution Networks in the United Kingdom

PVC and XLPE Insulated Concentric service cables with stranded copper or solid aluminium phase conductors and copper concentric neutral conductors

Protection of cable installations against the effects of fire

Procedure to meet the requirements of IEC 909 for the calculation of short-circuit currents in three-phase AC power systems

Planning limits for voltage fluctuations caused by industrial, commercial and domestic equipment in the United Kingdom

A guide for assessing the rise of earth potential at substation sites

Analysis package for assessing the security contribution from distributed generation and electricity storage systems – Users’ guide

Analysis Package For Assessing Generation Security Capability - Users' Guide

Harmonic voltage distortion and the connection of harmonic sources and/or resonant plant to transmission systems and distribution networks in the United Kingdom

Issue 1 Amendment 6

Requirements for the connection of generation equipment in parallel with public distribution networks on or after 27 April 2019

Harmonic voltage distortion and the connection of harmonic sources and/or resonant plant to transmission systems and distribution networks in the United Kingdom

Amendment 7

Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators

Guidance on the application of Engineering Recommendation P2, Security of Supply

Security of Supply

Issue 2 Amendment 3 
Recommendations for the Connection of Type Tested Small-scale Embedded Generators (Up to 16A per Phase) in Parallel with Low-Voltage Distribution Systems

Issue 1 Amendment 4 
Requirements for the connection of Fully Type Tested Micro-generators (up to and including 16 A per phase) in parallel with public Low Voltage Distribution Networks on or after 27 April 2019

Issue 1 Amendment 4 
Requirements for the connection of generation equipment in parallel with public distribution networks on or after 27 April 2019

Voltage fluctuations and the connection of disturbing equipment to transmission systems and distribution networks in the United Kingdom

EREC G99/NI - Northern Ireland Only

Requirements for the connection of generation equipment in parallel with public distribution networks in Northern Ireland on or after 27 April 2019

Guidelines for the design, installation, testing and maintenance of main earthing systems in substations

A guide for assessing the rise of earth potential at electrical installations

Guidelines for the Provision of Low Voltage Connections to Multiple Occupancy Buildings