Can i take a Fused Spur from a 45Amp Cooker Point

[Dave0098]

hello every1, i want to put a extractor fan in a shop kitchen, the easiest method from looking at the job would be to come off the cooker switch with a fused spur and power the extractor fan this way. its only a small extract fan, ive not bought it yet so i would say its no more than 1-2 Amps load.

cheers Dave

 

[Mr Mark Sparks]

you can spur of a cooker switch in the same way you can spur direct from an mcb (32a)

 

[ezzzekiel]

personally i class cooker point as dedicated circuit, that has been calculated for its demand and so wouldnt feed from it, not sure where regs stand on this though, just my method.

 

[flukey]

personally i class cooker point as dedicated circuit, that has been calculated for its demand and so wouldnt feed from it, not sure where regs stand on this though, just my method.

im with you ezzze

 

[sparks1234]

personally i class cooker point as dedicated circuit, that has been calculated for its demand and so wouldnt feed from it, not sure where regs stand on this though, just my method.

If its just anything up to say a 9 inch xpelair or the like it is going to be of no consequence to the calculations (if any were done) to the cooker circuit but its not really the done thing.

 

[Dave0098]

so from what i gather aslong as the fan dosent compramise the cable current carrying capacity im ok. but i cant really find a answer in the regs which says, "this is not to be done". from my calculations the cable will be ok upto 44Amps. the cooker is about 25Amps thats well under the 44Amps calculated. if the cooker was closer to the maximum current carry capacity of the cable then yes i would say its maybe not safe to take a spur from it. but i think theres plenty to play with there for an extractor fan circuit. after all some cooker switches come with a 13Amp socket outlet.

thanx for your replys, its good that we can have opinions from someone elses point of view which some might not have thought of or taken into acount.

cheers Dave

 

[sparkswillfly]

i would if it was my own and to much hassle to anything else but if it was for a customer no just quote to take it from some were else

 

[Mr Mark Sparks]

the thread was titled can i etc etc

its the same as a spur from a ring main ( 32a 2.5 )so why not the same thing with cooker circ if calcs are ok?

 

[ezzzekiel]

No one is arguing with you marks, but as cooker is dedicated circuit for that appliance then the norm is to leave it alone, also as sparkswillfly stated , at home i wouldnt think twice but for a customer i wouldnt do it mainly as its not common practice.


similar to light switch in bathroom, can it be fitted inside the bathroom - yes, but its not common practice

 

[Mr Mark Sparks]

ok ezzzekiel no worries
i agree not common practice
i just gave a quick yes no answer
cheers mate

 

[electro]

Hi

What size cable would you use to feed the spur when you have tapped of the cooker circuit?

regards

 

[Mac]

hello every1, i want to put a extractor fan in a shop kitchen, the easiest method from looking at the job would be to come off the cooker switch with a fused spur and power the extractor fan this way. its only a small extract fan, ive not bought it yet so i would say its no more than 1-2 Amps load.

cheers Dave

Just run it off a lighting circuit.

 

[electro]

agreed

Regards

 

[Spudnik]

If the circuit is protected by a 32A MCB, how come we are allowed to spur off of a RFC or the MCB with 2.5??

 

[electro]

Hi Jason


Nice question the answer is 2.5mm can carry 27amps and the spur-off can only generate 26amps maximum. As a socket has its own local overcurrent protection and it would not be probable for both sides of a double socket outlet (if fitted) to overload at the same time and if this did the cable would take the short duration.


Regards