Two ovens - how many circuits?

[Taylortwocities]

as plugging two ovens into the socket circuit would take up a lot of the capacity.

And is not recommended by BS7671. See appendix 15 for details.

 

[WiringPeter]

well I'm no electrician, but in that case the design current could be 14.2A which would be 1.5mm cable in most circumstances and the breaker could be 16A. There's no penalty for using a larger cable though, other than cost, and ease of installation. I would still recommend hard wired on a separate circuit though, as plugging two ovens into the socket circuit would take up a lot of the capacity.

You may have the wrong idea. None of the cooking appliances will go on the circuit with the socket, partly for the reason you mentioned and partly because of regs. It would be either two 32A circuits (one for the hob and one for two ovens) or a 32A circuit and two 16A circuits. The sockets will be on a completely different (ring) circuit.

I won't go below 2.5mm as I want the potential for at 20A breakers in the future. There is some insulation too (<100mm).

 

[telectrix]

a 32A circuit for hob makes sense. as for the ovens, it's your choice whether to have a 32A circuit for both, or 2 x 16/20A circiuits for the ovens, either way complies. the question is almost as complex as whether I have a beer , cider, or scotch for breakfast. any one will comply with craving, but not necessarily in that order.

 

[johnduffell]

You may have the wrong idea.

I don't think so, as you say in the rest of your post you'd like to oversize the cable and ocpd beyond the design current which is fine, and separation of circuits to minimise inconvenience is a sensible principle. However with the talk of 10mm2 cable i thought it wise to post

 

[telectrix]

always best to have 2 circuits....... Pink Floyd and Black Sabbath, both loud, but not at the same time, accompanied with Roberts thick slice toast and a pint or 2 of Old Peculier. pure Heaven....

 

[Toneyz]

whether I have a beer , cider, or scotch for breakfast. any one will comply with craving, but not necessarily in that order.[/QUOTE]
Is that what is meant by diversity Tel!

 

[telectrix]

whether I have a beer , cider, or scotch for breakfast. any one will comply with craving, but not necessarily in that order.

Is that what is meant by diversity Tel![/QUOTE]
maybe. need to look in the 18th editiom of CAMRA to confirm.

 

[timbobelfast]

Carry out a circuit design and base your cable sizes on that.
Likelihood is that these ovens are going to be in place for 10 years plus, so trying to predict changes after that is pointless.

 

[chrisdungan]

2 circuits
1 for the hob