Cooker cable

[Electromob]

Hi all, just joined, starting my Nvq soon. Was wondering if I'm correct in assuming the cooker can be on a 6mm conductor on a 30amp RCD and the hood can be on 1.5mm if it's a spur?

 

[i=p/u]

depends on power of cooker but can spur off for hood as long as is within 3m

 

[Electromob]

Not sure cooker power i was asked to fit cable on a first fix, I done his shower cable and said it should be ok for cooker too.

 

[i=p/u]

probably could be if standard cooker, get someone else to confirm am i right in saying that you can take 1.5mm from cooker point long as its fused within 3m

 

[SMB]

If that bit of 6mm at the cooker if fused at 32amps do not spur off it with 1.5.

Surely that is taken as said..

 

[malcolmsanford]

Hi and welcome to the forum hope it will help you.

As your just starting then in most applications, and let's say it's a 6mm^ Twin + Earth cable it will be ok on a 32 amp protection device., but if it was in insulation exceeding 100mm thickness it would only take 27 amps, this is a rating factor you use when your designing a circuit, and you will be taught this.

Same as the use of RCD, RCB.RCBO, though you said 30 amp RCD you will find that it will either be in domestic situations a 63/80amp 30mA RCD with a 32 amp MCB or a 32 amp RCBO which is RCD/MCB combined, but again this will become clearer as you go along.

It is not normal to spur off of the cooker circuit to feed another aplliance ie a hood, as most manufacters advise a dedicated circuit for larger cooking appliances, the new modern under 3kw cookers can be treated differently but again let's not run before you can walk. A normal way to wire a hood would be to spur of the socket outlet circuit. So normally you would come of the socket in 2.5mm into a switched spur unit and then 1.5 or 1.00 to the hood, using a 3amp fuse in the switch spur

 

[i=p/u]

think its allowed

 

[SMB]

burn baby burn

 

[i=p/u]

not really as hood wouldnt pull much.

 

[SMB]

Without looking 1.5 will take about 17 amps.

Your fusing that 6mm cable at 32 amps.

The sums don't quite add up in your favour.

 

[malcolmsanford]

Not sure cooker power i was asked to fit cable on a first fix, I done his shower cable and said it should be ok for cooker too.

Sorry son who as asked you to do this, a friend, a relative or a sparks your working with. If it is a sparks then I hope he is guiding you as he should be, your not really ready to start taking decisions like this are you?

 

[i=p/u]

well how come you can come off 300A fused busbar in 1.5mm for lighting if fuse within 3m, just the same

 

[SMB]

Sorry mate perhaps ive misunderstood you.

Its rather doubtful you will be coming of a bus-bar which is fused at 300amps with a bit of 1.5 (I hope)

 

[i=p/u]

well you'l learn, what im led to believe anyway. get one of them old gits in here to confirm this , they staying away cause they unsure themselves

 

[malcolmsanford]

Are you talking about regulation 434.2.1 then look at parts (i) (ii) of it ...from a miserable old git