We've been given an one year old electric cooker to replace an old gas one
that died. The cooker is a single oven type and the label on the rear says
it is rated at 9.3/10.1Kw
We already have a radial circuit etc. for an electric cooker which was there
when we arrived. This has a 30A breaker fitted. It seems to me that this
probably won't be high enough (9300/230@) for the cooker but as it is only
a single oven type it seems odd to me that it would need any more than a
standard 30A. so, a couple of questions:
1) Would i get away with wiring this into the 30A circuit as long as we
didn't use everything together? Would it just keep tripping the breaker or
would it be dangerous?
2) If i do need a 45A breaker how straightforward is this to fit into the
consumer unit (do they just unplug?) and do i need a particular type?
3) Am i going to have problems with the wiring size if i uprate the breaker?
I can't easily get to any of the wiring as it is all sunk into the wall.
4) if i do any of this, what's the position re: certification?
I would be grateful of any advice. The cooker was free and we don't really
have the money to get someone in to install it and we're fed up with
You have a problem. Sounds like the rings are 2Kw each. The oven 1.3Kw
and the grill is 2Kw. A greedy beastie.
You seem to know the figures. If you work on 4 amps being 1Kw and you
have 30Kw to play with. A ring or grill wants 8 amps and the oven
(say) 5 amps. You can get away with selective use of what's available
but can you guarantee that somebody won't want all on at once?
You cannot just uprate the breaker without also doing the wiring to
But how many cookers of this rating are connected to this rating
circuit? I would think a great many and the owners are unaware of any
Probably dangerous to do so without further investigation
There are hundreds of thousands of them all over the UK. And they have no
problems and are correctly wired.
The IEE state that a 30 or 32 amp circuit for a household cooker rated up to
15kW is usually appropriate.
It is down to diversity. Even if all the power on the cooker is switched on
at once then very quickly the heating elements will cycle and start to
switch on and off so the maximum current will not last very long.
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