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Explain why RCDs fitted into extension leads or incorporated into plugs are forbidden

Adam Seddon

this question is inside a mentor guide at the place i work for someone to be signed off as a fully competent electrician.

none of us can think of any reason why this may be the case, can anyone else?

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     I suspect many folk work in buildings that predate designs for RCDs everywhere, and will continue to do so for many years. I know I do.
     Perhaps sockets outdoors will be covered, but not all by any means. In such places, higher risk kit that may be taken anywhere, including to client sites of unknown condition, and work benches where equipment may be worked on open frame to repair it, may well be prudently fitted with an RCD plug as a means to reduce risk somewhat relative to not bothering at all.
    The absence of RCDs in the building wiring is only a C3 at last inspection, and will wait until major works means the buildings are rewired or rebuilt. The comment level may change from C3  to C2 on some future inspection of course, but that decision may well not be made until some point in the 2030s.
    I'd not be brave enough to say it was wise to remove all RCD plugs just yet,  and say these are never needed, in my mind they should stay except if one actually causes a problem.
    Mike.

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  • 0

     I suspect many folk work in buildings that predate designs for RCDs everywhere, and will continue to do so for many years. I know I do.
     Perhaps sockets outdoors will be covered, but not all by any means. In such places, higher risk kit that may be taken anywhere, including to client sites of unknown condition, and work benches where equipment may be worked on open frame to repair it, may well be prudently fitted with an RCD plug as a means to reduce risk somewhat relative to not bothering at all.
    The absence of RCDs in the building wiring is only a C3 at last inspection, and will wait until major works means the buildings are rewired or rebuilt. The comment level may change from C3  to C2 on some future inspection of course, but that decision may well not be made until some point in the 2030s.
    I'd not be brave enough to say it was wise to remove all RCD plugs just yet,  and say these are never needed, in my mind they should stay except if one actually causes a problem.
    Mike.

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