bathroom extractor fan
- Thread starter gezzer
- Start date
Yes but will have to go through a triple pole isolating switch
Deryck Tintagel said:
Triple pole? That's a new one. I recall only having a live and neutral feed into my house...
Either way, if the fan's wattage ain't too high, you can wire it up to your light.
But you might consider making the light and fan a spur off the ring main, because lighting curcuits are designed for, you guessed it, lights.
For this, you buy a double pole, pull cord isolator, and then simply connect the light and fan to this in paralell (i.e. not that fancy loop and switch ceiling rose setup, that is used for normal lights).
Oh yeah, and dont forget to include a fuse somewhere, if you spur of the ring main.
gezzer said:
To wire this thing off the ring main:-
1. Find the nearest ring main cable to connect to.
2. Attach a fused spur (perhaps 3amp fuse).
3. Run cable from this to the DP (double pole) pullcord.
4. Run cable out of this pullcord to your light, and the same again for the fan.
Yes, definitely 3-pole - MK part K4859 or similar - look at this for wiring information.
The need to isolate the switched live and permanent neutral from the light fitting but if you have a fan with a timer you will need a permanent live also.
I wouldn't take a feed from a socket ring as you will need to have either a separate switch or if you wire the light via a fused spur anyone coming after you would reasonably expect the bathroom light to be dead when the lighting fuse is removed only to get a shock!
The need to isolate the switched live and permanent neutral from the light fitting but if you have a fan with a timer you will need a permanent live also.
I wouldn't take a feed from a socket ring as you will need to have either a separate switch or if you wire the light via a fused spur anyone coming after you would reasonably expect the bathroom light to be dead when the lighting fuse is removed only to get a shock!
sterose said:
New one? You've been here a while, surely you've seen talk of permanent live, switched live and neutral, and the need to isolate all of them?
But as you say if it's not a big load you can wire it to the lights. And they are not big loads! A 6" fan is typically 25W. Even a 12" 1000 cubic meter per hour jobbie is only 120W. There's absolutely no need to consider wiring it into a ring circuit.
GEZZER - the answer to your question about how you wire it up is that you wire it up according to the instructions that come with it. Would it be useful for me to say that you should also make sure that the fan you buy is suitable for the Zone where you want to fit it, and that if it has an earth that you remember to also connect it to the supplementary bonding in your bathroom?
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