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Ceeform 32A OCPD rating?

vantech

Hi, 

What size MCB should be used for a 32A industrial ceeform socket? 

The appliance I am looking at comes with a 32A plug, with the device (an EV) itself pulling 31A of power continuously. The device is an Ohme charger, as per the below link: 

https://ohme.odoo.com/shop/ohme0402gb001-ohme-go-commando-to-type-2-uk-5

I generally try to load MCBs to a maximum of 80% of their capacity, therefore the suitable choice for the 32A socket outlet would be a 40A MCB. 

The ceeform has no built in fuse, like a 13a socket so in theory, the socket could be overloaded if used in conjunction with a bunch of splitters and extension leads. 

Thoughts? I’m sure the regs state something about 16A sockets protected by 20A MCBs, but I am unsure about 32A. 
 

Thanks. 

  • 0

    gkenyon: 
     

    vantech: 
     

    What about a type with an interlocking switch that prevents energisation until the socket is plugged in? This then overcomes that issue. 

    It does not, strictly, meet the BS 7671 requirement.

    The designer or installer may be able to certify an “intended departure” for that requirement (in writing via the MWC or EIC) but the designer or installer will take responsibility for it being “no less safe”.

    Much the same as hot tubs in domestic applications. These are usually plugged into ceeform sockets in gardens, rated at 32A. 

  • 0

    Provided there's an “intended departure” on the certificate, no problem.

    Manufacturers of hot tubs should make themselves aware of UK national requirements (BS 7671) when compiling their installation instructions for the UK … and preferably when carrying out product design for installation in the UK.

    I would ask whether there's any reason the product could not be wired to a connection point? It's not like it's movable most of the time (when it's filled with water).

  • 0

    I once put an interlocked 64 amp socket on the back of a house for a 59 amp hot tub, it was the only option, that one had big tunnels in it which kids could stick things in.

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