Currys instal is it right?

[ban-all-sheds]

dont all new cookers run on alot less power? I was told that all new stuff only needs 2.5mm as low power, not like the old stuff needing 6mm+ cable size.

Is this correct or have i been informed wrong?

Ye cannae change the laws of physics - if you want a hob that generates enough heat to be of any use then an electric one will use way too much power to be run off a 2.5mm² cable.

You may have been confused by the careless use of the word "cooker" to mean "oven".

 

[ericmark]

Looking for example at a De Dietrich Continuum Induction Modular Hob DTi741X it uses 4Kw or a De Dietrich Induction Hob DTi714V 2x2.8 1x3.1 1x2 = 10.7Kw = 17 to 46 amp which means in real terms the energy efficient hobs can draw more current than the older types that used heat transfer rather than directly causing the pan to heat. The new induction hobs will turn off more and will heat the kitchen less but in the main require a 10mm² feed cable. One can’t expect electric hobs to boil a pan of water quicker than gas and use low power the De Dietrich Induction Hob DTi749V has two 4.6Kw and a 2.2 + 3.2 ring that’s 14.6Kw or 63 amp plus a boost function and A rated for energy. They make gas hobs look really slow. But the £1000 price tag seems to put people off!
Does one need separate supply for cooker?
Eric

 

[mattysupra]

um intresting, i have had two rewires done in the last year by two different sparks. Both installed 2.5mm for the cooker/oven. When i questioned this with them they both gave the same answer that regs now state 2.5mm not 6mm as all new cookers/ovens use alot less power!

I did think that this is not correct, for instance if i had a new tennant move in that had a old oven for instance the cable wont take the power. Worse thing is that they removed 6mm cable and replaced with 2.5mm!

 

[ban-all-sheds]

They make gas hobs look really slow.

Give me a gas hob every time. Apart from bringing a pan of water to the boil, for which you'd probably use an electric kettle even if you have an induction hob, fast heating is of no use.

But the £1000 price tag seems to put people off!

To say nothing of the fact that they won't work with pans that you can't heat by induction...

And I'm planning on spending £3.5K on a cooker with a gas hob and electric ovens.

Does one need separate supply for cooker?

It depends...

 

[ban-all-sheds]

um intresting, i have had two rewires done in the last year by two different sparks.

I don't know where you're getting your electricians, but it's the wrong place.

they both gave the same answer that regs now state 2.5mm not 6mm

No they don't.

as all new cookers/ovens use alot less power!

No they don't.

I did think that this is not correct, for instance if i had a new tennant move in that had a old oven for instance the cable wont take the power.

2.5mm² will be fine for an oven.

But not for an all-electric cooker.

 

[mattysupra]

i have just had a quick look in the flat and the cooker is on 4mm with a 32 breaker. I remember now insisting on them using something bigger than 2.5mm. I take it 4mm on a 32 breaker is fine ? The breaker would trip would it not if it tried to pull more than 32amps?

 

[ban-all-sheds]

I take it 4mm on a 32 breaker is fine ?

Not an unqualified "fine" - it depends on how it's installed, i.e. what does it run through or in?

The breaker would trip would it not if it tried to pull more than 32amps?

A B32 is required to pass 36A indefinitely, and is allowed to pass 46A for up to an hour.