32 Amp Cooker, 30 Amp Rcd

JamesAsus · 4 Nov 2021

Is a 32 amp cooker safe to use on a dedicated 30 amp cooker circuit? I live in uk.

If i decide to get a 45 amp circuit put in (for a larger cooker), does £350 sound reasonable to fit a new 10mm cable from the fuseboard to the kitchen? Its opposite the room, probably about 6 metres distance and cable should be easily accessible under floorboards upstairs.

JohnD · 4 Nov 2021

JamesAsus said:
a 32 amp cooker

how was this description arrived at?

JamesAsus · 4 Nov 2021

JohnD said:
how was this description arrived at?

It just says it requires a 32 amp fuse, it draws 10kw i believe.

EFLImpudence · 4 Nov 2021

JamesAsus said:
If i decide to get a 45 amp circuit put in (for a larger cooker), does £350 sound reasonable to fit a new 10mm cable from the fuseboard to the kitchen? Its opposite the room, probably about 6 metres distance and cable should be easily accessible under floorboards upstairs.

You do not need a new 10mm² cable.

A 30A circuit is adequate for any cooking appliance likely to be fitted in a domestic situation.

Whole flats are frequently supplied on 10mm² cable.

JamesAsus · 4 Nov 2021

EFLImpudence said:
You do not need a new cable.

A 30A circuit is adequate for any cooking appliance likely to be fitted in a domestic situation.

Would it be technically 'legal' to fit a 32 amp fuse cooker on a 30amp cooker circuit? Would it be signed off as 'safe' basically?

Id never have more than 2 hobs on at a time tbh.

EFLImpudence · 4 Nov 2021

There is no such thing as a 32A fuse.

JamesAsus · 4 Nov 2021

EFLImpudence said:
There is no such thing as a 32A fuse.

It says a 32Amp Power Supply, and my circuit breaker says 30Amp on the cooker circuit, so not a fuse obviously but a trip switch or whatever its called.

EFLImpudence · 4 Nov 2021

32A would be a circuit breaker, Yours is a 30A fuse.

Your circuit will be fine for any cooker you might buy.

JamesAsus · 4 Nov 2021

EFLImpudence said:
32A would be a circuit breaker, Yours is a 30A fuse.

Your circuit will be fine for any cooker you might buy.

Its on the circuit breaker it says 30Amp, its an RCD i have. The cable is 4mm thick to the cooker.

EFLImpudence · 4 Nov 2021

Ok.

It's an old Type 1 MCB, is it? Not likely an RCD.

Are you sure it is 4mm²? It's usually 6mm².

Perhaps some pictures would be good.

SUNRAY · 4 Nov 2021

Before it gets too confusing there are 30A and 32A fuses and just as equally there are 30A and 32A MCB's (trip switches).

Your cooker will be fine on a 30A fuse or MCB.

EDIT: The cable size should be checked but as EFL says 6mm² (Or 7/0.044" if an old installation) is the common size.

JohnD · 4 Nov 2021

JamesAsus said:
It just says

what says that?

securespark · 4 Nov 2021

As said, a 30 or 32A circuit is ample for a domestic cooker. Diversity is applicable which allows for the fact that not everything is drawing full power at the same time.

JamesAsus · 4 Nov 2021

EFLImpudence said:
Ok.

It's an old Type 1 MCB, is it? Not likely an RCD.

Are you sure it is 4mm²? It's usually 6mm².

Perhaps some pictures would be good.

I had an electrician quote me for a 10mm cable and he thinks its a 4mm cable, although it was measured with a tape measure roughly, he thought it was was 4mm though.

Ive attatched pics of the cooker switch, the connection behind the current gas cooker and the rcd.

flameport · 4 Nov 2021

It's an entirely standard 30A cooker circuit, as installed in millions of homes everywhere.
Very likely with 4mm² or 6mm² cable connected to it.

You don't need 10mm² cable, or to replace anything. Any freestanding cooking appliance intended for domestic use can be used on a 30A circuit, as can other combinations such as a separate hob and oven.

JamesAsus said:
although it was measured with a tape measure roughly

That isn't how cable sizes are determined, if the 'electrician' thought that was an appropriate way to identify it, you need to find someone else.

The presence of 2x electric shower circuits is more of a concern, as is the obsolete 30+ year old RCD covering all of the circuits.

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32 Amp Cooker, 30 Amp Rcd

JamesAsus

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