I have recently finished building my new house I did all the wiring myself, but had it NICEIC checked on completion, I've just fitted another extractor fan in the shower room, I used the main supply form the upstairs ring, but used a positive feed from the light switch next to the fan switch to switch it, however, the fan switch has a neon on it, and even with the yellow (SW) wire disconnected at the isolator the neon glows, I don't get it, with the fan off, but the light on the neon glows, I now done away with the switch wire, but can't for the life of me work out why the neon glows even with the switch wire disconnected further up.

Anyone got an idea, let me know please, cos I'm stumped!!

Merry Xmas.

Ron.

If I interpret what you have done correctly, you have 2 separate fused supplies at the same appliance :eek:, if your house was 3 phase there would he a hole in the ceiling where the fan used to be...:D.

Just check the rating of the fan, IIRC, it should be ok to run it off your lighting circuit, you will need to supply the fan from the nearest ceiling rose, just treat it as another light fitting.


Any supplies or switchwires to the fan needs to be from either the mains via a spur, or the lighting circuit, not both. There is a *good* chance you can backfeed the ring main even if the 30A fuses are out. It would backfeed at the fan itself and jump from the lighting circuit switchwire ( to bring on the fan )across to the ring main live conductor, depending on the internal wiring of the fan itself.

Thanks, I think,
I'll leave it as it is now, being powered and switched from the same source, it just means that I have to actually switch the fan on and off, and not use the lighting to switch it!

Ta.

being powered and switched from the same source

is it then?

It is now,
I've moved the switch wire into the live feed on the switches side of the, fused outlet so, I flick the switch, the fan comes on, I flick it off, it goes off, not what I really wanted, but I can't get a feed from the lighting circuit to the place where the switch is, otherwise I'd run it off of the lighting, just ain't that practiacl where things are!

Cheers.
Ron.