Cooker switches and connection units

[mfarrow]

Hi

Girlfriend wants an induction hob to replace the gas one as she's not happy cleaning it.

I was going to install a 40A circuit for the oven and hob (oven is presently plugged in to ring main, but this is a spur off a spur ). I've chosen 40A to future-proof the installation of a double oven.

I'll need to use 10mm² cable as the cable will go under some insulation, clipped to a wall.

Question: do most 45A cooker switches and CCUs accept 10mm² cable?

Many thanks in advance.

 

[OwainDIYer]

H
Question: do most 45A cooker switches and CCUs accept 10mm² cable?

MK Logic Plus High Current Switches and Cooker Control Units:

Terminal capacity, 45A Switches and CCUs:
4 x 4mm2
3 x 6mm2
1 x 16mm2

Terminal capacity, 32A Switch:
3 x 2.5mm2
2 x 4mm2
1 x 6mm2

http://www.neweysonline.co.uk/neweys/pdf/MK_Electric_Moulded_Accessories_Logic_Plus_Technical.pdf

 

[JohnW2]

Question: do most 45A cooker switches and CCUs accept 10mm² cable?

Yes.

It would be crazy if they didn't since, with many installation methods, 10mm² is the smallest cable that has a 45A current-carrying capacity (and even 10mm² doesn't with some installation methods).

Kind Regards, John.

 

[riveralt]

Hi

Girlfriend wants an induction hob to replace the gas one as she's not happy cleaning it.

I was going to install a 40A circuit for the oven and hob (oven is presently plugged in to ring main, but this is a spur off a spur ). I've chosen 40A to future-proof the installation of a double oven.

I'll need to use 10mm² cable as the cable will go under some insulation, clipped to a wall.

Question: do most 45A cooker switches and CCUs accept 10mm² cable?

Many thanks in advance.

You would be better of with a 50 Amp Cooker switch and a dual cooker control unit - if you are using 10mm cable.

You will have trouble fitting two 10mm cables into the standard 45Amp Cooker switch. You will also need a deep backbox - and a fair bit of strength.

The best option is to avoid insulation and fit 6mm cable. Clipped direct you will get a ccc of 46Amps just over 10kw before diversity.
Also bear in mind what the manufacturers instructions say - if they provide a cable, I bet they don't provide a 10mm - probably just 4mm.

 

[riveralt]

duplicate response

 

[mfarrow]

THanks for the replies.

I think I'll stick with a dual cooker outlet plate (I have not imagined them have I?). As long as I can get the cables in and out of the switch then I'm a happy bunny.

Good point about the cable size on the unit. Hopefully (I haven't got the big book with me) 4mm should be OK on a 40A fault, but I'll check if it comes to it, and install a downstream breaker if it fails.

I'm not keen on clipped direct as I'm planning the insulation (kitchen to garage, single skin at present) as a method to hide the cables in time for a utility room next year which will take half the garage up.

 

[riveralt]

THanks for the replies.

I think I'll stick with a dual cooker outlet plate (I have not imagined them have I?).

http://www.alertelectrical.com/prod/1022/click-45a-easyfit-dual-appliance-outlet-plate

This is the type I use.