Arc Fault Detection Devices (AFDDs) — 18th Edition Amendment 2, Wiring, and Selection for UK Electricians
Arc fault detection devices (AFDDs) are now mandatory in HMOs and high-risk premises under BS 7671:2018 Amendment 2. This guide covers how AFDDs work, where Regulation 421.1.7 applies, wiring and commissioning, nuisance tripping, and coordination with RCBOs and SPDs.
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