Help on a wiring setup

[Todmordenhoop]

Hi folks.

Sorry if posted in the wrong forum but I'm a newbie looking for advice.

I have purchased an induction hob (Total Kw 7.2kw) and an oven 2.4kw which both require hardwiring to an isolator on the wall. When my electrician fitted the rewire, he ran a 6mm cable to the spur switch and then to the isolator (under 2metres) where the hob/oven are. My question. Can I run both hob AND cooker into the isolator on the wall on 6mm cable and a 32amp breaker at the c/u both conventionally and legally? Pending checks once installed obviously...

Bear in mind that the chances of all 4 rings on the hob and cooker being used at once is very slim. All I need to know is is it legal and safe to do this. I know 10mm cable is preferable but it might be a big job to do this now... Can I just upgrade the breaker?

Thanks for your time
Chris

 

[i=p/u]

7.2kw add 2.4 kw = ...., divide by 230 = ...., take first 10A and 30% of the remainder and add 5A if cooker switch incorparates a socket outlet, then this will be your Ib , then you choose In wich will be equal or greater than Ib, then you choose It and this will be equal or greater than In

 

[malcolmsanford]

The protection device is there to protect the cable, if it is undersized for the appliances then that is really just inconvenience rather than any real danger.

Depending on the run and perhaps the chance of the cable being de-rated by factors such as insulation, but IMO 6mm on a 32amp breaker seems pretty safe.

 

[Geoffsd]

As I am stating in another thread - do you not consider it necessary to fuse-down for the oven as it will probably only be supplied with a 13A flex?

 

[truckster]

Just fit a dual accessory box where the cooker outlet is and fit a fcu to one side for the oven and a cooker outlet plate to the other for the hob.