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Exposed 24VDC in a Bathroom

Harry Heathfield
Hello IET Forum,


I'm hoping someone can point me in the direction of a suitable standard that refers to exposed 24VDC conductors not being appropriate in a bathroom. My client would like to use the two metal hinges of a bathroom cabinet mirror as the +/- conductors; I'm not comfortable with them connecting any electricity through metal hinges, let alone in a bathroom! I've consulted with BS7671:2018; it says up to 30VDC is appropriate for the zone, but that doesn't mean exposed, of course! My client wants me to provide unquestionable evidence as to why they can't do it, but I'm struggling to find anything that isn't open to interpretation. Can anyone help?


The best I can find so far is from IEC 60364-4-41, Annex A.1 “Live parts shall be completely covered with insulation which can only be removed by destruction”.


Kind Regards, Harry
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  • 0
    Hi Z and Mike,


    Thank you for your response. After doing more research and realising the previous standard I referred to isn't for ELV (thanks, Mike), I need to look at something a little more specific. I hope there will be a consumer type standard for products that will be applicable; I'm not too fond of the hinge being exposed, as a fault current or another unforeseen situation could lead to a dangerous outcome (potentially). I might need to speak to a specialist on the matter, but any further feedback would be appreciated.


    Kind Regards, Harry
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  • 0
    Hi Z and Mike,


    Thank you for your response. After doing more research and realising the previous standard I referred to isn't for ELV (thanks, Mike), I need to look at something a little more specific. I hope there will be a consumer type standard for products that will be applicable; I'm not too fond of the hinge being exposed, as a fault current or another unforeseen situation could lead to a dangerous outcome (potentially). I might need to speak to a specialist on the matter, but any further feedback would be appreciated.


    Kind Regards, Harry
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