RCDs 🇬🇧 UK
Which circuits need 30 mA RCD protection in the UK?
Socket-outlets up to 32 A, mobile equipment used outdoors up to 32 A, lighting circuits in domestic premises, cables buried in walls less than 50 mm deep (unless otherwise protected), and every circuit in a bathroom.
30 mA, ≤ 32 A socketsDomestic lighting
Regulation: BS 7671:2018+A4:2026 411.3.3, 411.3.4, 522.6.202/203, 701.411.3.3.
Study aid in plain English, not the text of the standard. Always check the current BS 7671 and your local rules. Electrical work must be done by a licensed or registered electrician.
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