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MCB and RCD mix and match of makes 536.4.203

Stewart Mason
Just wondering what peoples thoughts are to mixing makes of MCB's and RCD's in consumer units. I went to a callout the other night and the culprit was a faulty 61008 RCD. To get the power back on I replaced the faulty Item with a different make of 61008 RCD. The next day I raised a job to have the right make of RCD fitted. It turns out the QS at work isn't concerned about the incorrect make of RCD and is more concerned about IP ratings being met. Am I right in wanting to fit the correct make of RCD?


What would you code this as on a EICR?
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    Interesting BEAMA report. It seems to give a succinct summary of the situation regarding 'mix and match'. I think the "In Conclusion" section sums it up:
    • It is the responsibility of the installer who intends to mix devices / components in an assembly, to undertake appropriate verification and ensure conformity with the relevant standard.


    This is not the same as saying it must not be done. It is putting the responsibility on the person making the change to ensure the appropriate verification is done (BS EN 61439-3, section 10 for domestic consumer units).
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  • 0
    Interesting BEAMA report. It seems to give a succinct summary of the situation regarding 'mix and match'. I think the "In Conclusion" section sums it up:
    • It is the responsibility of the installer who intends to mix devices / components in an assembly, to undertake appropriate verification and ensure conformity with the relevant standard.


    This is not the same as saying it must not be done. It is putting the responsibility on the person making the change to ensure the appropriate verification is done (BS EN 61439-3, section 10 for domestic consumer units).
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