Bathroom extractor supply cable

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What is the supply to an extractor, is it just taken from the lighting, extended in line from the light and operated via the bathroom light switch?
 
yes, that's a very popular way to do a bathroom or WC extractor.

Some people have an aversion to ventilation and don't like that method because it means the extractor comes on each time the light is turned on.

Other people like ventilation and like that method because it means the extractor comes on each time the light is turned on.

Some people have cheap or old, worn-out extractors that are noisy so they don't like turning them on.
 
winston lives in a special house where the wind only ever blows in one direction.

So it always sucks steam and odours out of the bathroom window, it never blows them into the house.

And rain never passes through this magical window, nor flies or wasps.

and it always automatically closes itself when not required.

Lucky winston.
 
What is the supply to an extractor, is it just taken from the lighting, extended in line from the light and operated via the bathroom light switch?
Normally the fan have an over-run on a timer, so take a 'hard' permanent feed and 'switched' live, so they come on with the light, but of a period of time later.

Depending on how it is wired, often you will have all the required wires at the light fitting. Fan isolators then have three poles to isolate L, N and SW-L for maintenance on the fan.

Sometimes people put a second switch in, so one gives light only, the other light and fan, or mirror light and fan etc. So you dont have to have the fan on whenever the light is on.

More expensive fans, such as the S&P silent range, are quieter than others.


Daniel
 
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