Dual fuel, Twin oven cooker fitting

[rmaynard]

A friend of mine is in the middle of having her cooker replaced with a dual fuel twin oven one, the gas safe engineer has refuced to fit it as he says the electricity supply is not suffecient, its a standard cooker circuit, 6mm cable fed from the 32a mcb, into the 45a cooker socket then fed down to the connection plate, she asked me to have a look for her this evening but can find nothing wrong with the circuit, is there a special requirement for dual fuel cookers or ones with twin ovens?

Rob

 

[SirKit Breaker]

What is the Kw rating? it may need a 10mm 40 odd amp supply!

Cheers........Howard

 

[Dunc]

What's the rating of the oven? Bet you it's over 7500W and the gas fitter knows the calculation for converting watts to amps but nowt about our little friend diversity.

 

[rmaynard]

I think its 8.5kw but not 100% sure

 

[mike2790]

you can connect a cooker up to 15kw on a 32A breaker in a single domestic dwelling by applying diversity, in reality you just wouldnt, you'd give it 40a on a 10mm or something. the gas safe engineer however is still wrong.

for diversity you take the first 10A of the rated current plus 30% of the remainder of the rated current, plus a further 5a if a socket is incorporated in the isolation unit.

 

[rmaynard]

Will it pull double the rated current as it's s double oven?

 

[SirKit Breaker]

I think its 8.5kw but not 100% sure

You need to be really.

 

[Dunc]

I think its 8.5kw but not 100% sure

You're probably right which would likely make my first reply correct. Tell your friend they have two choices, either get a different gas fitter in to connect it up or get the same gas fitter back at the same time you're there and dump a copy of the OSG under his nose at the relevant page and tell him to do his job so you can do yours. Typical of the 'i know a little therefore i am perfectly qualified to advise on something i really know sod all about' brigade from the sounds of things.

 

[mike2790]

Will it pull double the rated current as it's s double oven?

the rated current should include all parts of the appliance mate.

 

[SirKit Breaker]

Will it pull double the rated current as it's s double oven?

No mate it wont. Double oven just refers to it being 2 ovens in one unit. It will have one power rating as if it was one appliance, which it is.

Cheers.......Howard

 

[SirKit Breaker]

You're probably right which would likely make my first reply correct. Tell your friend they have two choices, either get a different gas fitter in to connect it up or get the same gas fitter back at the same time you're there and dump a copy of the OSG under his nose at the relevant page and tell him to do his job so you can do yours. Typical of the 'i know a little therefore i am perfectly qualified to advise on something i really know sod all about' brigade from the sounds of things.

I like this, but the like button has gone!

 

[mike2790]

I like this, but the like button has gone!

i came across the same thing. haha that made me laugh, nearly spat my supernoodles on my keyboard.

 

[ian]

should not have a problme connecting up to 15KW, gas fitters know about gas, sparks know about lecy.