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SELV - Not a fan of?

whjohnson
Short question - is a mains voltage extractor fan permissible in zone 1 or 2 in a bathroom provided it is protected by a 30ma rcd and that all IP requirements are met??

OSG chapter 8, Table 8.1, page 94 says only 25vAC or 60v ripple-free DC SELV or PELV, yet I have just been to the wholesalers to look at what they have, and they showed me two mains fans with "Suitable for" or "Complies with" Zone 1 emblazoned on the packaging.


I am looking to fit a fan with a humidistat but am struggling to find a SELV version if that is actually required.

So, which is correct? The manufacturer (whose instructions must be followed) or the on site guide, whose instructions must also be followed!


Comments welcome.


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  • 0
    Their prosecution rep will be all over the wording of the OSG like a tramp on a tray of silt chips. I can see it now - "Best of your knowledge and ability sir? But you didin't follow the wiring regulations, specifically...........and I have an expert witness here to prove it"

    Thankfully the wiring regulations themselves (i.e. BS 7671) are reasonably clear - and do currently allow 230V fans in zone 1 (with the provisos) - so you should be able to sleep soundly on that point.


    No expert witness in their right mind would refer only to some other document (like the OSG) if the alleged job in hand is to show lack of compliance with the wiring regs.


         - Andy.
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  • 0
    Their prosecution rep will be all over the wording of the OSG like a tramp on a tray of silt chips. I can see it now - "Best of your knowledge and ability sir? But you didin't follow the wiring regulations, specifically...........and I have an expert witness here to prove it"

    Thankfully the wiring regulations themselves (i.e. BS 7671) are reasonably clear - and do currently allow 230V fans in zone 1 (with the provisos) - so you should be able to sleep soundly on that point.


    No expert witness in their right mind would refer only to some other document (like the OSG) if the alleged job in hand is to show lack of compliance with the wiring regs.


         - Andy.
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