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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: 
     

    Multiple 16 amp ceeform socket outlets may be protected by a 20 amp OCPD, in order to allow for simultaneous use of one full loading appliance and several small loads.

    Larger ceeform outlets should in my view be protected by an OCPD that matches the outlet rating. 

    If long term heavy loading is expected, I would consider it good practice to have either a blank space or a minimally loaded MCB each side of the fully loaded one.

    I would also consider it good practice to go “one size up” for the cable that supplies the ceeform outlet. Probably 6mm rather than 4mm. This will reduce heating and save energy.

    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.

    It’s for a EV so should only have one socket outlet per circuit for Mode 2

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  • 0

    broadgage: 
     

    Multiple 16 amp ceeform socket outlets may be protected by a 20 amp OCPD, in order to allow for simultaneous use of one full loading appliance and several small loads.

    Larger ceeform outlets should in my view be protected by an OCPD that matches the outlet rating. 

    If long term heavy loading is expected, I would consider it good practice to have either a blank space or a minimally loaded MCB each side of the fully loaded one.

    I would also consider it good practice to go “one size up” for the cable that supplies the ceeform outlet. Probably 6mm rather than 4mm. This will reduce heating and save energy.

    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.

    It’s for a EV so should only have one socket outlet per circuit for Mode 2

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