The current standard for consumer units in domestic premises is set by BS 7671:2018+A3:2024 — the 18th Edition of the IET Wiring Regulations with Amendment 3, issued in July 2024. Failing to comply doesn't just put properties at risk—it could also result in legal consequences. Understanding these regulations is essential, whether you're upgrading an old fuse. This guidance is about the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020. This guide gives you a clear, up-to-date overview for 2025: who the regs apply to, what they cover (and don't), how they link to Building Regulations and the Electricity at Work Regulations, the current 18th Edition with recent changes, and the essentials on RCDs, AFDDs, SPDs and bonding. Additional standards and codes of practice would generally be needed to satisfy a specific application - it is the responsibility of the specifier to select and apply these. The IEC (International Electrotechnical Commission) and BS 7671 (British Standard for Electrical Installations) both provide essential requirements for electrical installations, including those for fuse boards like garage unit, consumer unit and distribution board.
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