install electric hob and oven

[rayone]

Hi
can i install both hob and oven on existing 30amp
double oven rating 5773 both
hob rating 7070
using a cooker control box then spurring off for the oven
many thanks
Ray

 

[RF Lighting]

No. The hob draws 30A on its own.

 

[ColJack]

but what about diversity?

23A with diversity... ( using 240V for calculations and assuming no socket on the control switch )

 

[Steve]

but what about diversity?

23A with diversity... ( using 240V for calculations and assuming no socket on the control switch )

Go on then smart arse, what about the oven? diversify that and add it on. Then see if its suitable for a 30A circuit

 

[properleckie]

sorry Steve but as coljack says diversity for a domestic cooker is 10A plus 30% of remainder (plus 5A if socket fitted).
so,5773+7070=12843/230=55.8A,
regs allow first 10A plus 30% of remaining 45.8 (13.74A) =23.74 + 5A if socket on plate= 28.74A so no problem on 32A supply. see OSG for confirmation.
by your reckoning cooker would need 16mm2 cable!

 

[Steve]

sorry Steve but as coljack says diversity for a domestic cooker is 10A plus 30% of remainder (plus 5A if socket fitted).

What about for a seperate oven and hob? How does one define a domestic cooker nowadays? Where does it stop? The kitchen shops try to sell these coffee machines and microwaves that sit over or next to an oven - do we include these as well? I'd always run a seperate circuit for anything over 3kw - oven and hob, and any fixed high power jobbies such as microwaves. One forum regular has just fitted a full size consumer unit just for a domestic kitchen.

Also, your calculations are correct, but try diversifying them seperately. I get 30.75amps excluding the socket. Now theres another question.

At least I wont be eating cold turkey ON Christmas day

 

[electronicsuk]

You can quote diversity all you like, but common sense says that that these two appliances on a 30A circuit is not a good idea. OP, install two dedicated radial circuits, one for the hob and the other for the oven.

 

[1john]

You can quote diversity all you like, but common sense says that that these two appliances on a 30A circuit is not a good idea. OP, install two dedicated radial circuits, one for the hob and the other for the oven.

Indeed, diversity will be a nice comfort when you cant make a christmas dinner using all your facilities, im sure.

seperate radial required for each imo.

 

[ColJack]

ok since none of the old guard has chimed in and pointed it out, I was being sarcastic..
I am a big opponent of diversity for a single circuit..
I would install seperate circuits for the 2 items and suitably sized cables to take the full load..