Protective earthing of electrical installations - Code of practice

BS 7430:2026

British Standards Institution
Protective earthing of electrical installations - Code of practice Download document

Document Status

Current

Supplement

Core Supplement

Series

BS

Abstract

Provides guidance and recommendations for earthing of electrical installations. Relates to low voltage installations, interfaces between LV and HV substations within buildings, protective earthing arrangements for generators running in parallel with distribution network operators or private HV/LV transformers supplying low voltage installations, and protective earthing and changeover switch arrangements for UPS and generators supplying low voltage installations.

History

Supersedes BS 7430:2011+A1:2015. Came into effect 31 May 2026.

ISBN

9780539280616

Subjects

  • Building services
  • Electrical services
  • Switches and sockets

Publisher History

With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

Information

NBS

NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

Accuris

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