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RCDs for fire protectionOne RCD for a wooden barn's sockets?
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The third job is fire protection. You install it in locations with an increased risk of fire. That could be because of stored flammable materials, or because the building itself is made of a flammable material. A wooden barn is a good example.
BS 7671 · Chapter 42 · protection against thermal effects · locations with risks of fire The 300 mA rule is Reg 422.3.9 · check your copy
A common mix-up is a minimum of 300 mA, but it's a maximum. The RCD must not exceed 300 mA. A lower rating is more sensitive, so it gives at least as much protection.
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- 18th Edition
- Building Regs
- PAT
- Fundamental Inspection & Testing
- Initial Verification
- Periodic Inspection & Testing