Change of cooker/oven

[ramonford]

I am replacing an electric cooker which has a combined ceramic hob and integral oven. The original installation dates back to 1978, but the distribution board was updated about 5 years ago to include MCB’s and RCD. The existing installation checks out OK for earth and leakage etc.

The old cooker is now to be replaced by a separate ceramic hob and oven.
The question is does the existing installation have to be upgraded as I am only replacing like for like. The 2.4 Kw oven will be connected to the existing ring.

Thanks for any advise.

 

[1shortcircuit]

If it's like for like then crack on.... But is it like for like?

 

[Spazz]

Considering its only 2.4kW it will be fine with a 13A plug.

If you want to install a new circuit for the cooker then all the better but that is notifiable which can cost over £120 or what ever your electrician charges for installing the circuit

 

[Geoffsd]

There is no mention of 'like for like' in the regulations.

 

[Richard Burns]

"like for like" is indeed a misnomer often used, the appropriate consideration would be maintenance replacement.

 

[Billynm]

Since when did a cooker replacement become anything to do with the wiring reg's ?.

 

[snowhead]

Since when did a cooker replacement become anything to do with the wiring reg's ?.

When the circuit it's being connected to isn't suitably rated.

 

[Billynm]

When the circuit it's being connected to isn't suitably rated.

But, at the end of the day he's only connecting a hob. His words "the installation checks out OK". Lets not make a mountain out of a mole hill !!

 

[Billynm]

I am replacing an electric cooker which has a combined ceramic hob and integral oven. The original installation dates back to 1978, but the distribution board was updated about 5 years ago to include MCB’s and RCD. The existing installation checks out OK for earth and leakage etc.

The old cooker is now to be replaced by a separate ceramic hob and oven.
The question is does the existing installation have to be upgraded as I am only replacing like for like. The 2.4 Kw oven will be connected to the existing ring.

Thanks for any advise.

Assuming that the circuit has a 6mm T/E protected by a 32A breaker, and assuming that you have done R1/R2, insulation resistance test & RCD, test if applicable & all test results are within the required parameters then GO AHEAD..

 

[Spazz]

Assuming that the circuit has a 6mm T/E protected by a 32A breaker, and assuming that you have done R1/R2, insulation resistance test & RCD, test if applicable & all test results are within the required parameters the GO AHEAD..

The OP states that the cooker will be connected to the existing ring

Logically a new radial should go in for the cooker but there is no legal requirement for this!
As the cooker is only 2.4kW it can be plugged into the existing socket ring on a 13A plug with no issues at all! The cooker will only pull 12A at the most and thats at 220v ac (10.5A at 230v ac).

I dont know why everyone is making a mountain out of a mole hill here.

The OP asked can I connect my new oven and hob onto the existing ring - answer yes!

 

[Geoffsd]

The cooker will only pull 12A at the most and thats at 220v ac (10.5A at 230v ac).

It doesn't work like that.

Assuming the oven is quoted 2.4kW @ 240V then

220V - 9.17A
230V - 9.58A this to be used for any calculations
240V - 10.0A
250V - 10.4A

The OP asked can I connect my new oven and hob onto the existing ring - answer yes!

Correct.

 

[drew35]

But he also said a separate hob which he hasn't specified wattage for. He said the oven is 2.4kw.

What about the hob?

 

[Geoffsd]

I am replacing an electric cooker which has a combined ceramic hob and integral oven.

The old cooker is now to be replaced by a separate ceramic hob and oven.

The question is does the existing installation have to be upgraded as I am only replacing like for like. The 2.4 Kw oven will be connected to the existing ring.

Assuming the hob is to be connected to existing cooker circuit.

Although the oven could be as well.

 

[jibjob]

If OP is replacing a cooker with integral electric hob for 2 seperate items then it's not like for like. You'll obviously need to take into account the existing circuits and whether they are suitable for said appliances. Hob oven combinations are often found wired into the same circuit, usually minimum 6mm T&E with 30a/32a protective device with a dual connection unit feeding both via a 45a switched FCU. However, all will depend on the total loading of both appliances. If you have access to an existing cooker circuit & an available socket you could split them up.

 

[Deservices]

It doesn't work like that.

Assuming the oven is quoted 2.4kW @ 240V then

220V - 9.17A
230V - 9.58A this to be used for any calculations
240V - 10.0A
250V - 10.4A


Correct.

Current is wattage divided by voltage. The wattage doesn't change which is determined by the resistance. Ohms law. Previous mr Owen is correct.