Wiring cooker hood into cooker circuit?

[lobsters]

Hello chaps,

I am installing a new electric oven, gas hob and cooker hood. I have taken a spur in 6mm already from the oven FCU flex outlet to another Fcu flex outlet for the igniter. Can I take another spur up to a FCU for a 3 amp cooker hood?

I understand that common domestic wiring practice is to take it from the ring main. However this would require a much more destructive approach to the stud wall it would be fixed to. It would save a lot of time, money and bother to simply take it up from the cooker feed. It would be well within tolerances electrically.

A bit about myself. I trained as spark many years ago (16th edition) and for twenty years have been a lighting technician in theatre and music. I work with electricity every day and consider myself competent and confident with electricity. However, it has been a good while since I did anything domestic so I'm unsure of common practice in that area these days.


Many thanks in advance.


Steve

 

[echoes]

Yes, that would be OK. Some would even say it's preferable since you could isolate the lot via the cooker switch.

It may not be necessary to use 6mm² for the spur. e.g. If your cooker circuit is 32A, then 2.5mm² would suffice, assuming the cooker hood FCU is less than 3m from the point of the spur. Same goes for the hob igniter FCU.

 

[lobsters]

Thanks for the reply. I'm using 6mm as that is what the cooker circuit is wired with and I feel it would be good practice to maintain that system and keep any current rating changes visible so there are no surprises for anybody in future.

Thanks again. It means I can just fit the FCU and just drop the cable straight down, rather that pulling off the plasterboard, drilling the stud etc

 

[echoes]

Well certainly nothing wrong with using 6mm² if you like.
(Just a pig to connect 2 x 6mm² in FCU terminals in anything less than a 47mm back-box, and overkill for equipment which will be fused at 13A max. Just saying... )