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522.6.203 RCD protection required for cables in metal stud walls, what about ceilings?

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  • Sparkingchip, that was the 15th or perhaps the 14th edition which went mad on bonding. Really it had nothing to do with RCDs or not, and was reversed in the 16th because many of the suggestions were more dangerous rather than less. Putting consumers in a conductive location is definitely a bad idea as any shock will be much more serious. This particularly applies to commercial kitchens, where excessive local bonding and earthing makes them a death trap. Large areas of Earthed metal and a damaged cable are not recommended. RCDs do give some additional safety, as does limiting the earthed metal available to touch. Plastic piping is definitely an electrical safety measure, perhaps BS7671 should specify it?
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  • Sparkingchip, that was the 15th or perhaps the 14th edition which went mad on bonding. Really it had nothing to do with RCDs or not, and was reversed in the 16th because many of the suggestions were more dangerous rather than less. Putting consumers in a conductive location is definitely a bad idea as any shock will be much more serious. This particularly applies to commercial kitchens, where excessive local bonding and earthing makes them a death trap. Large areas of Earthed metal and a damaged cable are not recommended. RCDs do give some additional safety, as does limiting the earthed metal available to touch. Plastic piping is definitely an electrical safety measure, perhaps BS7671 should specify it?
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