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Like for like requirements

Jimi

Hi, I know like for like replacement is classed as maintenance and a MEIWC isn't required. With an alteration to a circuit the new work has to comply with the latest BS7671, so some of the existing installation will need to comply also to allow the new work to comply, like RCD (if required), bonding, existing equipment rating and condition etc.

Am I right in thinking that for like for like this is not required? So if there was no bonding or RCD protection you could still change a light fitting for example.

What if there was no CPC at the light and you were fitting a class 1 or class 2 fitting? Or getting crazy, no CPC on a socket front change?

Thanks.

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    You do a like for like replacement of a broken ceiling rose and pendant set, the installation is just as safe as it was before, you have not impaired the safety of the existing installation.

    You then use part 1 to advise the customer of any non-compliance with the current edition of BS7671 such as no RCD protection on a thirty-year-old lighting circuit that is otherwise still fit for purpose.

    But installing a new socket outlet to an existing circuit without RCD protection is not acceptable and I would deeply question someone doing a like for like replacement of an electric shower without RCD protection, but it happens.

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  • 0

     

    You do a like for like replacement of a broken ceiling rose and pendant set, the installation is just as safe as it was before, you have not impaired the safety of the existing installation.

    You then use part 1 to advise the customer of any non-compliance with the current edition of BS7671 such as no RCD protection on a thirty-year-old lighting circuit that is otherwise still fit for purpose.

    But installing a new socket outlet to an existing circuit without RCD protection is not acceptable and I would deeply question someone doing a like for like replacement of an electric shower without RCD protection, but it happens.

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