4Kw electric double oven install

[Littlefoot2]

Hi all
The missus has decided she wants the gas oven removed and replaced with a
electric double oven. It is rated at 4Kw. From cooker to consumer unit it is 10 metres.
I have looked in the forum and have seen 2.5 mm cable on a radial circuit would be ok or 6mm
cable.
I have some spare 10mm cable can I use this instead? I know its a bit overkill but it will save buying more cable and it would help me for future upgrades, ie, electric hob.
I have a spur 40mA MCB in the CU could I use this or would I have to replace with a 32mA MCB.
The cable would be run under floorboards and rest on the concrete footings.

Thanks

 

[flameport]

Larger cable can be used, the only minor issue is that it will be more difficult to connect into the terminals of certain accessories.
10mm² cable can be used for a 40A circuit provided the cable isn't run through insulation or installed in certain other undesirable ways.
New circuits are notifiable work in England and Wales.

 

[EFLImpudence]

10mm² cable can be used for a 40A circuit provided the cable isn't run through insulation or installed in certain other undesirable ways.

6mm² cable can be used for a 40A circuit provided the cable isn't run through insulation or installed in certain other undesirable ways.

 

[EFLImpudence]

4kW @ 240V is 17A so you could use 1.5mm² cable and 20A MCB

 

[winston1]

I have a spur 40mA MCB in the CU could I use this or would I have to replace with a 32mA MCB.

Check those again. 40mA will just about supply a 100 watt bulb, no more.

 

[Littlefoot2]

Sorry typo error. The mcb is rated at 40A.
I can get some 2.5 T&E to run on a 32a MCB, but for future upgrade I will most
probably go with the 6mm and 32mA MCB.
As Flameport pointed out the cable would be difficult to connect to fixtures.

Thanks Guys

 

[davelx]

Sorry typo error. The mcb is rated at 40A.
I can get some 2.5 T&E to run on a 32a MCB, but for future upgrade I will most
probably go with the 6mm and 32mA MCB.
As Flameport pointed out the cable would be difficult to connect to fixtures.

Thanks Guys

2.5mm² T&E is rated 27A at best, so you can't use that for a radial circuit on a 32A MCB.

 

[denso13]

Sorry typo error.

Don't worry, 99.9% of people new exactly what you meant.

 

[BS3036]

It's just the odd 0.1% who didn't.

 

[SUNRAY]

It's just the odd 0.1% who didn't.

So that will be 1 in a 1000 who didn't understand. I dare say that persons name began with 'w' and the '1' (in the 1000) came at the end.

Now we know what the '1' is for

 

[wundaboy]

2.5 on a 20a MCB would do fine.

 

[EFLImpudence]

Do you not already have a 'cooker' circuit?

If not just install the standard cooker circuit of 32A and 6mm² (4mm² would probably do) from CU to cooker switch to dual cooker outlet near the oven. Use 2.5mm² from outlet to oven.

Then you can just add a hob whenever you want.

 

[winston1]

Don't worry, 99.9% of people new exactly what you meant.

I think everyone knew what he meant. But it was wrong and needed correcting.

 

[Taylortwocities]

 

[TimboTwo]

I think everyone knew what he meant. But it was wrong and needed correcting.

Pedant!