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[Richie London]

ive just fitted a kitchen at me x's and have got a built in under oven and a sepearte hob. its a single oven and it says its 2.07kw on the label. i presume i can just wire it with 2.5mm 3 core cable from the oven direct to the spur behind the cooker which has the main switch above the worktops.

Is this correct??

[RobG]

ive just fitted a kitchen at me x's and have got a built in under oven and a sepearte hob. its a single oven and it says its 2.07kw on the label. i presume i can just wire it with 2.5mm 3 core cable from the oven direct to the spur behind the cooker which has the main switch above the worktops.

Is this correct??

Yes, but ideally use 3-core heat resistant flex with a rating suitable for the appliance

[Kevin Wood]

You need to make sure the total draw of the oven and hob are acceptable for the spur as I assume you are intending running them off the same cooker spur? There are diversity rules for this which I can't recall off the top of my head. http://www.tlc-direct.co.uk have some useful guides.

Also, I would check what fuse rating the oven requires. Having only a 2kw rating it might need a 13A fused spur rather than direct connection to a 30/45A cooker spur.

In fact, you could wire it into a 13A spur box on the ring main and then use the cooker spur for the hob alone. 

[Marks DTM Calib]

No you cant.

The cable you are proposing is not capable of withstanding the  fault currents required to cause a cooker supply to trip.

You either need to use the same thickness cable as the main cooker supply (probably 6mm) or connect it via a fused supply (potentialy 13A given the rating you give but the oven manual should advise)

[Richie London]

No you cant.

The cable you are proposing is not capable of withstanding the  fault currents required to cause a cooker supply to trip.

You either need to use the same thickness cable as the main cooker supply (probably 6mm) or connect it via a fused supply (potentialy 13A given the rating you give but the oven manual should advise)

the hob has to be wired to a 30 amp spur but can be used with a 2.5mm minimum cable according to user manual.

the oven i have no user manual for and cannot find online anywhere. its a diplomat select 620 fan assisted oven. but the bloke in the shop said it could be connected to the spur with the hob and just needs 2.5mm as its only 2.7kw.  its all working ok so i am going to see if i can get a manual off mfi where it came from. 

[Marks DTM Calib]

No you cant.

The cable you are proposing is not capable of withstanding the  fault currents required to cause a cooker supply to trip.

You either need to use the same thickness cable as the main cooker supply (probably 6mm) or connect it via a fused supply (potentialy 13A given the rating you give but the oven manual should advise)

the hob has to be wired to a 30 amp spur but can be used with a 2.5mm minimum cable according to user manual.

the oven i have no user manual for and cannot find online anywhere. its a diplomat select 620 fan assisted oven. but the bloke in the shop said it could be connected to the spur with the hob and just needs 2.5mm as its only 2.7kw.  its all working ok so i am going to see if i can get a manual off mfi where it came from. 

Well both the manaul and the man are wrong.

Consider the scenario where the cooker starts to pull say 5KW due to a fault (shorted element winding for instance which is not an impossible occurance on such an appliance)

The weakest link will be the 2.5mm cable and the cooker supply trip wont trip.....the result is a fire!

Golden rule of wiring, all cables must be rated according to the upstream trip/fuse rating.

[Richie London]

No you cant.

The cable you are proposing is not capable of withstanding the  fault currents required to cause a cooker supply to trip.

You either need to use the same thickness cable as the main cooker supply (probably 6mm) or connect it via a fused supply (potentialy 13A given the rating you give but the oven manual should advise)

the hob has to be wired to a 30 amp spur but can be used with a 2.5mm minimum cable according to user manual.

the oven i have no user manual for and cannot find online anywhere. its a diplomat select 620 fan assisted oven. but the bloke in the shop said it could be connected to the spur with the hob and just needs 2.5mm as its only 2.7kw.  its all working ok so i am going to see if i can get a manual off mfi where it came from. 

Well both the manaul and the man are wrong.

Consider the scenario where the cooker starts to pull say 5KW due to a fault (shorted element winding for instance which is not an impossible occurance on such an appliance)

The weakest link will be the 2.5mm cable and the cooker supply trip wont trip.....the result is a fire!

Golden rule of wiring, all cables must be rated according to the upstream trip/fuse rating.

so both cables should be 30amp rating then is that correct.

[Marks DTM Calib]

Yes and 2.5mm is not 30A rated (its 20A) so you need 6mm

[Kevin Wood]

the hob has to be wired to a 30 amp spur but can be used with a 2.5mm minimum cable according to user manual.

the oven i have no user manual for and cannot find online anywhere. its a diplomat select 620 fan assisted oven. but the bloke in the shop said it could be connected to the spur with the hob and just needs 2.5mm as its only 2.7kw.  its all working ok so i am going to see if i can get a manual off mfi where it came from. 

I fitted pretty much the same model of Oven in the last house (also from MFI) and, from what I can recall, it specified a 13 amp fused spur in the instructions. I remember because I fitted one for the purpose.

Looking at the internal wiring in the oven I wouldn't have done anything else regardless of what it said.

But Mark is correct. It doesn't matter what the appliance manual states , it's the rating of the upstream breaker that determines the choice of cable, and 2.5mm cable can be overloaded on a 30A circuit (and bear in kind that some cooker spurs are rated at 45A).

[Richie London]

Thanks very much gents. Much appreciated 

[tigers_gonads]

What sort of hob is fitted ?
Electric or gas ?


2kw oven needs to be wired in 2.5 / 3 core butal flex ( heat resistant )

Yes it can be wired into a 13 amp socket but not into the Electric hob circuit.
Idealy, the oven should have a 20 amp dp switch mounted above the worktop for isolation purposes.

[lastmadrich]

If it is a fan assited oven you can just take the cooker outlet off and change for a single socket then wire your cooker in 2.5mm flex to 13 amp plug top plug in with no issues also to bear in mind if your hob is gas you can change the outlet to a double socket and plug both oven and hob in controlled from the cooker switch above worktop level same with gas oven for ignition any q just pm me ( certified sparky lol ) and change breacker in board to a 16 amp