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Two Rcd's On One Circuit
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<blockquote data-quote="Doc Hudson" data-source="post: 357579" data-attributes="member: 1607"><p>Welcome to the forum, I have moved your post to start a new question rather than extending a discussion that is over two years old.</p><p></p><p>To answer the last part of your question DIY stores sell leads with built in RCD's as there are still thousands of properties without any fixed RCD protection built into the consumer unit or final circuits.(RCD spurs or RCD sockets), So they still have their uses. All that will happen in your proposed scenario is that if or when a fault occurs you will have no idea which RCD will trip first. There is no regulation saying you cannot install two RCD's in series any more than there is a regulation saying you cannot have two 5A plug top fuses in series. Not uncommon for a home owner to have two extension leads connected to together round the back of the furniture to supply all the computer or TV or sky box kit. But as with RCD's it will be pot luck which one blows first should there be a fault. I would suggest that the garden and outdoor supplies are far more dangerous than the bathroom. Also I imagine your fan is double insulated with no exposed metal parts? and I doubt anyone using the bathroom is going to spend much holding the fan whilst also touching a metallic bath pipe, as such I would consider two RCD's in series to be a waste of time, effort and money installing when the circuit is already RCD protected.</p><p></p><p>Doc H.</p></blockquote><p></p>
[QUOTE="Doc Hudson, post: 357579, member: 1607"] Welcome to the forum, I have moved your post to start a new question rather than extending a discussion that is over two years old. To answer the last part of your question DIY stores sell leads with built in RCD's as there are still thousands of properties without any fixed RCD protection built into the consumer unit or final circuits.(RCD spurs or RCD sockets), So they still have their uses. All that will happen in your proposed scenario is that if or when a fault occurs you will have no idea which RCD will trip first. There is no regulation saying you cannot install two RCD's in series any more than there is a regulation saying you cannot have two 5A plug top fuses in series. Not uncommon for a home owner to have two extension leads connected to together round the back of the furniture to supply all the computer or TV or sky box kit. But as with RCD's it will be pot luck which one blows first should there be a fault. I would suggest that the garden and outdoor supplies are far more dangerous than the bathroom. Also I imagine your fan is double insulated with no exposed metal parts? and I doubt anyone using the bathroom is going to spend much holding the fan whilst also touching a metallic bath pipe, as such I would consider two RCD's in series to be a waste of time, effort and money installing when the circuit is already RCD protected. Doc H. [/QUOTE]
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Two Rcd's On One Circuit
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