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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. 

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    broadgage: 
     

    In the USA, the electrical code restricts long term loading of circuits to 80% of the nominal capacity, or put another way requires a circuit capacity of 125% of the design load.

    So in the USA, a similar vehicle charger would need a 38 amp circuit, or rounded up to the nearest standard size, a 40 amp circuit.

    Or alternatively a 32 amp circuit loaded to only 25.6 amps.

    There is no such requirement in the UK.

    Except where 536.4.202 leads to the requirement. The actual rating of an OCPD may also be dependent on the ambient temperature, and under some service conditions we'd consider “normal” may actually be 80 % of the standard nominal rating …

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  • 0

    broadgage: 
     

    In the USA, the electrical code restricts long term loading of circuits to 80% of the nominal capacity, or put another way requires a circuit capacity of 125% of the design load.

    So in the USA, a similar vehicle charger would need a 38 amp circuit, or rounded up to the nearest standard size, a 40 amp circuit.

    Or alternatively a 32 amp circuit loaded to only 25.6 amps.

    There is no such requirement in the UK.

    Except where 536.4.202 leads to the requirement. The actual rating of an OCPD may also be dependent on the ambient temperature, and under some service conditions we'd consider “normal” may actually be 80 % of the standard nominal rating …

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