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One RCD, three jobsWhich RCD, in a minute.
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Sometimes one RCD covers all three jobs.
New socket circuit in a wooden barn on TT
Sockets → ADDITIONAL protection needed → must be 30 mA TT system → FAULT protection needed → 30, 100, 300 or 500 mA (must pass Zs × IΔn ≤ 50 V) Wooden building → FIRE protection needed → not more than 300 mA One 30 mA RCD: ✓ additional ✓ fault ✓ fire → covers all three jobs
This comes down to knowing the regs, so you never end up leaving out protection that's required.
Barns and Part 7
If the barn is used for livestock or farming, it's also a Part 7 location (Section 705, agricultural and horticultural premises), which has its own RCD requirements. Check it, as in section 6.
If the barn is used for livestock or farming, it's also a Part 7 location (Section 705, agricultural and horticultural premises), which has its own RCD requirements. Check it, as in section 6.
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- 18th Edition
- Building Regs
- PAT
- Fundamental Inspection & Testing
- Initial Verification
- Periodic Inspection & Testing