New Kitchen First Fix for Oven Bank

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Nryder81

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Hi All

Looking for some advice on first fix wiring for our extension, before connecting ang getting certification on completion.

Our new kitchen will have a bank of appliance...
2x single oven, 3.2kw/230-240v/manufacture required fuse 16
1x Combi microwave, 3.0kw/220-240v/manufacture required fuse 16
1x coffee machine, 240volt

The consumer unit is approx 5meters from the appliances.

Could anyone help by advising
- how many circuits (should the ovens go on separate mcbs, or one that is split),
- mcb rating
- cable thickness consumer-cooker switch

Any help would be great so that I can put the correct first fix in before getting a qualified electrician

Thanks
Neil
 

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Any spare ways in the existing cu?
Are they rcd protected ?
Picture?

I would recommend getting and electrican in for a quote. (F.or second fix)
May he will tell you and let you do the first fix.
 
AndyPRK said:
Any spare ways in the existing cu?
Are they rcd protected ?
Picture?

I would recommend getting and electrican in for a quote. (F.or second fix)
May he will tell you and let you do the first fix.
Click to expand...

Yes, I’ve 3 spare RCDs that are protected.
 
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Nryder81 said:
Yes, I’ve 3 spare RCDs that are protected.
Click to expand...
No you haven’t.

and that’s Another reason why you need to have your tame electrician advise you what (if anything) that he/she will let you do in preparation. Don’t forget that he/she will need to CERTIFY, NOTIFY and TEST that this work that THEY DESIGNED, INSTALLED and TESTED complies with BS7671 and Building Regulations. no electrician worth their salt will be prepared to put their name to a document that was designed on advice from unknown idiots from an Internet forum and installed by you.
Sorry.
 
Last edited:
Generally the 2 ovens and microwave can go on one 4 or 6mm feed from a 32 a MCB. (Everything will NEVER take full load at the same time). The coffee machine can olug into
Nryder81 said:
Hi All

Looking for some advice on first fix wiring for our extension, before connecting ang getting certification on completion.

Our new kitchen will have a bank of appliance...
2x single oven, 3.2kw/230-240v/manufacture required fuse 16
1x Combi microwave, 3.0kw/220-240v/manufacture required fuse 16
1x coffee machine, 240volt

The consumer unit is approx 5meters from the appliances.

Could anyone help by advising
- how many circuits (should the ovens go on separate mcbs, or one that is split),
- mcb rating
- cable thickness consumer-cooker switch

Any help would be great so that I can put the correct first fix in before getting a qualified electrician

Thanks
Neil
Click to expand...

The 2 ovens and microwave can all go on a 32a MCB fed by 4 or 6mm cable. You will NEVER have full load on all of them at once. The coffee machine can be plugged into a 13 a socket on the kitchen ring.
 
How do you comply with the manufacturers requirement of a 16A supply when putting in a 32A supply?
 
If you wanted to comply you could fit a 3 way consumer unit in the kitchen cupboard above the oven.

Personally I wouldn’t and would fit 3 dual pole isolators in the cupboard
 
RF Lighting said:
How do you comply with the manufacturers requirement of a 16A supply when putting in a 32A supply?
Click to expand...
The 16A supply would presumably be a minimum requirement for effective operation, but more likely is just the usual circuit to which it would be connected in Europe, and merely a translation, and not really related to the requirements of the appliance.

Do I take it that you do not apply diversity to cooking appliances where it would contradict the manufacturer's stated amperage or wattage?
 
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