Wiring oven and hob from same cable

[dave_104]

Hi

I need to connect an oven and hob, I've looked at the regs and calculations etc and can't see anything I'm missing or wrong, but if someone's kind enough could I get a second opinion please?

Oven is 5.9Kw / 25A
Hob is 7.4Kw / 32A
Cable is 6mm T&E (clipped direct) which should allow max of 47A. Length of cable from CU about 10M.
Doing a diversity calculation says 24.3A diversity load.

The same cable will be feeding the oven and hob. Wall space is very limited, ideally I'd like a double-switched 45A DP switch but I can't find one (i.e. one switch for the oven, and one for the hob) - anyone know if these are available?? Failing that, is it OK to run both appliances from a single 45A DP wall switch then run down to a dual appliance outlet plate or must each appliance have it's own switch?

Any ideas, criticisms, or help would be really appreciated thanks!!

Dave

 

[Murdochcat]

Single DP switch and dual outlet plate is the best solution

 

[EFLImpudence]

is it OK to run both appliances from a single 45A DP wall switch then run down to a dual appliance outlet plate

Yes, that's how it's done.

 

[ebee]

Yes - If both of those units were in one housing and you called it a cooker the result would be just the same,
You might like to go up to say 13Kw or more total and you would still not flinch, even if you left them on for 48 hours each day!

Add up yer old Grannys Oven, Grill and hob and see what that could draw at its max, no panic, and you could see whats cooking under the grill and warm yer plates too at the same time, easy peasy, the more we progress the more we move backwards sometimes.

 

[dave_104]

Thank you very much for your replies guys. I have the ticket but not yet the experience and so it's reassuring to get a 2nd opinion from the real experts

 

[Murdochcat]

Thank you very much for your replies guys. I have the ticket but not yet the experience and so it's reassuring to get a 2nd opinion from the real experts

Are you doing this for a paying customer?

 

[dave_104]

No I'm doing this in my own house, but so long as it's done correctly then there shouldn't be any issues if money changes hands or not? I'll obviously do a proper cert when done.

 

[Sureitsoff?]

You don't actually have to have a switch in the feed to the oven and hob.

 

[morqthana]

you could see whats cooking under the grill ... the more we progress the more we move backwards sometimes.

 

[ebee]

Nice one Morq but the run of the mill units nowadays oh yes look nice bit I do miss those features of the old stuff, especially for the elder/infirm, less twisting or bending to see what is what.

Mind you, even though we have better recommendations for siting of consumer units and switches we still see them in rather silly places including on new builds, how the expect a little old lady to stand on a chair to reach over a doorway to flick a breaker is a classic coon sight.

One job I did was (in a rewire of a house), fit a Fused DP switch where the existing consumer unit was under the stairs, where by tradition everybody hides all the things they horde and create obstacles to get to a low point .
I moved the consumer unit site to the kitchen at a good working height , nobody liked it cos it was not what they were used to.
easier to access, clear to see and they removed the temptation to have soft skinned T & E outside of permitted zones (hundreds if not thousands of (council) houses like that so everyone thinks of it as "The Correct Place" and the more sensible location is therefore "Wrong" , easy to build a cupboard around it too if required to make it sort of blend in. But still not right because it is not "where everybody else has one".