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Ceeform 32A OCPD rating?

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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0 Chris Pearson over 3 years ago

433.1.1 Ib ≤ In ≤ Iz.
Ib = 31 A so you can, from an overload point of view, have a 40 A MCB (In). But then the cable has to be capable of carrying 40 A (Iz).
That means 6 sqmm instead of 4 sqmm if it's singles in conduit - Table 4D1A RM B.
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0 Chris Pearson over 3 years ago

433.1.1 Ib ≤ In ≤ Iz.
Ib = 31 A so you can, from an overload point of view, have a 40 A MCB (In). But then the cable has to be capable of carrying 40 A (Iz).
That means 6 sqmm instead of 4 sqmm if it's singles in conduit - Table 4D1A RM B.
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Ceeform 32A OCPD rating?

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