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The last remaining domestic circuits without RCD protection.

Sparkingchip
I prepared an EICR this morning for a two bed flat.


The peak installation has a 30 mA RCD main switch, which surprisingly despite being more than ten years old is a type A, so no RCD issues there.


The off-peak supplies two storage heater circuits run in surface mounted plastic mini trunking without RCD protection, so again no RCD issues. If I were installing the storage heaters with new circuits I would install RCD protection, but there’s no reason to condemn an existing installation.


I am just pondering exactly what can be installed in a domestic installation now without any RCD protection with the 18th Edition of the Wiring Regulations making them a requirement on lighting circuits there cannot be much left on the list.


 Andy B.
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    Andrew Jewsbury:




    No, because the regulations are not retrospective.



    But the new work (fitting of the new luminaire) would need to comply with current regulations.

      - Andy.


    "need to comply"?


    So what if a customer asks me to fit a lumnaire and connect it to a non-RCD protected circuit? That could be because it is a lighting circuit which supplies solely lampholders (which are not, in my opinion, luminaires), or because it was installed to 17th Edn or earlier. Do I have to fit an RCD?


    If I cannot replace the existing MCB, or fit an RCD in a separate enclosure, that new CU is a nice little earner, but what sort of customer would accept that?


    The work would not comply with 18th Edn, but there is no requirement that it must do so. When you fill in a MEIWC (if you feel obliged to do so) you can comment under "Details of departures".


    Frankly, it is not necessary to bring an installation up to date every time that it is altered. That would be disproportionate and unreasonable.

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  • 0

    Andrew Jewsbury:




    No, because the regulations are not retrospective.



    But the new work (fitting of the new luminaire) would need to comply with current regulations.

      - Andy.


    "need to comply"?


    So what if a customer asks me to fit a lumnaire and connect it to a non-RCD protected circuit? That could be because it is a lighting circuit which supplies solely lampholders (which are not, in my opinion, luminaires), or because it was installed to 17th Edn or earlier. Do I have to fit an RCD?


    If I cannot replace the existing MCB, or fit an RCD in a separate enclosure, that new CU is a nice little earner, but what sort of customer would accept that?


    The work would not comply with 18th Edn, but there is no requirement that it must do so. When you fill in a MEIWC (if you feel obliged to do so) you can comment under "Details of departures".


    Frankly, it is not necessary to bring an installation up to date every time that it is altered. That would be disproportionate and unreasonable.

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