Double Oven and Electric Hob on one 45 amp fuse?

[Woodtechnician]

First ever topic, be gentle.

Got a double oven, Seimens, 5100w and a 7000w electric hob. Just moved into my flat and the old stand alone cooker was on it's own "ring" with a 45amp rating.

Doing my calculations I'd guess it would be a bad idea to work both the oven and hob off of this circuit, is this right?

Ta

 

[ban-all-sheds]

It won't have been on a ring.

12100 ÷ 230 = 52.6

42.6 x 0.3 + 10 = 22.8

So it will almost certainly be fine, even if you don't fully accept diversity.

 

[Woodtechnician]

Thanks for the quick reply. Good news for the progress of getting my new kitchen out of my living room/bedroom and into the kitchen.

Anything I else I should think about when installing them? They will be on adjacent walls from each other, about 3.5m apart.

 

[pompeygit]

As the appliancesare more than 2m apart you will not be able to use the single switch as a single point of isolation. You will have to provide another cooker switch on the other side of the kitchen. As BAS says ok for both items on same circuit......hopefully this cable is on its own breaker minimum 32amp with cable size 6mm2

 

[Woodtechnician]

Is a 6mm2 cable and on a 40amp breaker. Will spur another cooker switch for the oven.

Cheers.

 

[securespark]

As the appliances are more than 2m apart you will not be able to use the single switch as a single point of isolation.

Adjacent walls, 3.5m apart.

I thought the rule was, as long as neither appliance was more than 2m from the switch, you could use one isolator.

 

[ban-all-sheds]

What rule would that be?

 

[securespark]

I may be confusing my 15th & 16th... but AFAIR, that is correct.

It was certainly in the 14th:

A29. Every stationary cooking appliance shall be controlled by a switch separate from the appliance and installed within 6 feet of the appliance. Where two stationary cooking appliances are installed in one room, one switch may be used to control the two appliances provided that neither appliance is more than 6 feet from the switch.

And in the 15th too: 476-20.

Find me the reg in the 16th that says switches must be within 2m of the appliance, and if it is in, it will be there.

EDIT: I have not got all my copies of regs to hand, but from memory, the yellow edition of the 16th said something like, where two appliances are installed in the same room, one means of isolation may be used.

If the 15th reg was 476, this 16th reg must have been in the same section 476-03-something.
Anybody else add to the debate?

 

[mdbalson]

What year was the 14th out in then & so how old are you, that you know the 14th edition

 

[securespark]

Was born the year the 14th was released: 1966.

But I did my apprenticeship with a guy who trained on the 14th & got to know it very intimately.

Me, I trained on the January 1985 copy of the 15th.