Guidance Note 8: Earthing & Bonding provides guidance for all generally applied methods of protection against electric shock in BS 7671 and key information from BS 7430 Code of Practice for Earthing. It covers key guidance for all involved with specifying, designing, installing or verifying electrical installations and has been fully updated to BS 7671:2018+A4:2026, including system types; guidance on functional bonding and protective bonding along with sizing requirements and updates to Highway power supplies and street furniture.