Mixed up neutral and live

[JohnW2]

i've pulled it out and have re-wired it properly in a junction box which is enclosed.

1) Is it the right current rating?

I suspect that you would struggle quite a lot to find a JB which did not have an adequate current rating for the supply to a cooker hood

Kind Regards, John.

 

[Taylortwocities]

would a cooker hood be any set rating or would I need to look for that specific model?

No, what rules?

For any particular circuit:
The size of cables, and the rating of any accessory, switch or connection block will be determined by the rating of the fuse for the circuit (or circuit extension.

For example. An electric shower may have a 40amp fuse. The cabling will have to be capable of carrying at least 40amps and any switchery will have to be rated at 40amps (or more).

You will have to find out where your cooker hood power comes from. It is probably from a fused connection unit, what is the size of the fuse in there?
3 amps, perhaps? Thats sets the parameters for cable size, and connection block capacity.

 

[JohnW2]

For any particular circuit: The size of cables, and the rating of any accessory, switch or connection block will be determined by the rating of the fuse for the circuit (or circuit extension.

I know we've been through all sorts of variants of this one in the past, but doesn't one have to modulate that view in the light of what is connected to the circuit - e.g. a fixed low load (like a cooker hood) or a limited load (e.g. limited by the fuse in a BS1363 plug)?... or do you feel that, say, the switch in a socket has to be rated for a current of at least 32A? (I bet they aren't )

Kind Regards, John.