Oven cable

[Peter Woodford]

Guys

have ran in a 10 mm cable for a oven as the customer said they were having a big oven but didn't know the kw rating so installed cable and cooker switch with plug they have now got the oven and have asked me to connect up I have found it has a 13amp plug on it am I ok just to down rate the fuse size

cheers

 

[Sintra]

You can do but don't need to as the fuse in the plug will protect the cooker anyway.

 

[dichroic]

Change your cooker outlet plate to a switched fused spur and put a 13amp fuse in it.

Regards

Dichroic.

 

[eddielarge]

You can do but don't need to as the fuse in the plug will protect the cooker anyway.

Don't agree with you about the fuse protecting it. In principle yes. But went to a call out recently where they had put a plug top on a cable that was rated at 20amps. The fuse didn't blow and the plug melted.

 

[Andyfm]

Could it have been a loose connection?

 

[eddielarge]

Could it have been a loose connection?

Cable in plug was a 4mm and the connections were still tight. i made some enquires and got told that a fuse in a plug is not an overcurrent device,, but i always thought that if it went above 13amps it would blow,but i am now being told different , and the oven is proof that they know better than me.

 

[Sintra]

If someone connects a plug top onto an aplliance of 20A like an oven then it wouldn't matter if it was plugged into a cooker control unit on a 32A or a ring on a 32A same outcome. I bet whoever did it had fun trying to get a 4mm into a plug top.

By my post i was presuming the oven the op posted about came pre fitted with 13A plug top and was suitably rated.

 

[eddielarge]

If someone connects a plug top onto an aplliance of 20A like an oven then it wouldn't matter if it was plugged into a cooker control unit on a 32A or a ring on a 32A same outcome. I bet whoever did it had fun trying to get a 4mm into a plug top.

By my post i was presuming the oven the op posted about came pre fitted with 13A plug top and was suitably rated.

i agree i was just sharing some useless info

 

[Spudnik]

The plug could still melt if there were signs of the cooker cable being crushed when installed.

 

[dichroic]

Cable in plug was a 4mm and the connections were still tight. i made some enquires and got told that a fuse in a plug is not an overcurrent device,, but i always thought that if it went above 13amps it would blow,but i am now being told different , and the oven is proof that they know better than me.

Where overload current protection is afforded by a BS 1362 cartridge fuse, there tends to be a need for the circuit conductors to be of a larger cross-sectional area than required by most other types of overcurrent protective devices used. This is because of the need to comply with condition (iii) of Regulation 433.1.1, which requires that I2, the current causing effective operation of the protective device within the conventional time, does not exceed 1.45 times the lowest of the current-carrying capacities (Iz) of any of the conductors of the circuit.

Regards

Dichroic

 

[eddielarge]

getting back to the original question, ive never put a 10mm in for a cooker,, how big did u think it was,, surely after allowing for diversityno domestic cooker is that big

 

[dichroic]

getting back to the original question, ive never put a 10mm in for a cooker,, how big did u think it was,, surely after allowing for diversityno domestic cooker is that big

It's not all about the power rating of the cooker though is it ?

We have to comply with voltage drop requirements as well. A long run of cable to the cooker point could force a larger cable to be selected.

Regards

Dichroic

 

[Sintra]

Also for grouping, thermal insulation etc.

 

[eddielarge]

It's not all about the power rating of the cooker though is it ?

We have to comply with voltage drop requirements as well. A long run of cable to the cooker point could force a larger cable to be selected.

Regards

Dichroic

How big are the houses that you work on that require a 10mm, hove u had to run a 10mm before
how long was the run

regards
eddie

 

[dichroic]

Come on you know what i mean.

Cable having a long run + ambiant temperature + grouping + thermal insulation + 3036 fuse etc.

I am saying that the power rating of the appliance is not ALL it's about when selecting the cable.

I bet Elvis had a 10.0mm cable for his oven in Graceland.

Regards

Dichroic