Noob question

[Jay1985]

Hi guys,

Doing some DIY at the house and have had the kitchen refurbished, had it rewired as well. I am basically trying to figure out before my mate who's a sparky comes back next week to finish off some info.

He has got a 40amp MCB in the board with a 6mm cable from that that runs in to the back of one of the above kitchen units for the double oven we are having below that. What I wanted to know is how does the oven connect to the wiring from here? Does the 6mm wiring terminate into a cooker switch and then the oven just plugs in to that with a 13amp plug (Like this one- http://www.screwfix.com/p/mk-2-gang-45a-dp-cooker-switch-with-13a-switched-plug-socket-white/17157  ? Or into something like- http://www.screwfix.com/p/mk-45a-cooker-connection-unit-white/16686

The oven is a Bosch HBM13B251B

Just want some knowledge before he finishes it off next week, I am a trainee as well so any info would be much appreciated.

Any advice would be much appreciated.

Cheers.

 

[ProDave]

It's normal to have a local isolator switch. 40A seems an awful lot for an oven, a hob perhaps, but not an oven, is it feeding both?
 

 

[steptoe]

40A on a 6mm cable seems big too.........

have you calc'd if the 6mm can carry 40A,?   [installation method etc?]

 

[Jay1985]

There is a 6mm cable going to a double oven which has an 'electrical connection' of 4.4kw on a 40A MCB, and another 6mm cable going to a microwave oven which has an 'electrical connection' of 3.6kw on a 32A MCB.

Would you say 40A is too high?

 

[ProDave]

4.4KW is 19A so ideally a 20A mcb would be ideal, but 32A is far better suited to it than 40.

the microwave @ 3.6KW is 15.6A so put that one on a 16A mcb
 

 

[Jay1985]

Thanks for all the info guys. Would the following be ok for both then- http://www.screwfix.com/p/mk-45a-cooker-connection-unit-white/16686 ?

 

[Blue Duck]

If you are connecting both items to the one point then this would be more suitable.

 

[Jay1985]

No, he has pulled a 6mm cable to both ovens, so they are going to be connected separately. Have you got a link of what the ovens need to connect to please anyone? What type of cooker connection?

 

[Murdoch]

Best you ask him ......