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Plastic blanks or dummy MCB's on metal consumer units

Alan B

I have been installing quite a few fusebox consumer units recently and like the units, especially the cost effective double pole RCBO's

BUT I hate fighting with getting the metal blanks in the right place as they slide all over the place when trying to get the cover back on. I would very much like to move towards plastic blanks or plastic dummy circuit breakers.

Past posts from 2017 state that this is not allowed if metal blanks are used, just wondering what the current position is. If I need to use the metal blanks any tips on making installation easier.

Thanks

 

Alan

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    Pardon me for being so bold, but I am sure that plastic blanks are compliant so long as the metal lid hinges downwards. I have never bought metal blanks separately and have only ever fitted whatever spare plastic blanks which either came with the unit or some from my spares box.

    In any case, the number of '17th ed' boards I have seen fitted where knock-outs have been randomly bashed out and cables run in without glands or grommets numbers many, along with those whose knockouts have been opened up but left unused! Given this, worrying about whether a blank is of metal or plastic is something not worth the concern in my view.

     - RE: Schneider, I have seen a significant number of their units fitted whereby the metal flaps hinges from the bottom! Don't know if this was a design fault, or that someone fitted the front on upside down!

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  • 0

    Pardon me for being so bold, but I am sure that plastic blanks are compliant so long as the metal lid hinges downwards. I have never bought metal blanks separately and have only ever fitted whatever spare plastic blanks which either came with the unit or some from my spares box.

    In any case, the number of '17th ed' boards I have seen fitted where knock-outs have been randomly bashed out and cables run in without glands or grommets numbers many, along with those whose knockouts have been opened up but left unused! Given this, worrying about whether a blank is of metal or plastic is something not worth the concern in my view.

     - RE: Schneider, I have seen a significant number of their units fitted whereby the metal flaps hinges from the bottom! Don't know if this was a design fault, or that someone fitted the front on upside down!

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