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Ask The Trades › DIY Forum › Electrical Questions › Wiring my new Bathroom Extractor

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Wiring my new Bathroom Extractor (Read 2143 times)

DanRo

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Wiring my new Bathroom Extractor
Aug 7^th, 2009, 11:13am

Hello All,

I have bought a new extractor fan for the bathroom to replace the old one that has died. It has to be said that the new one is very cheap.

The situation is that I have 4 wires to connect it to. Red, yellow, blue and earth. The red and yellow are live. However, the fan has only 2 terminals. One for a permanent live and the other for a neutral.

I'm stumped as to how to wire it.

Any guidance would be greatly appreciated

Thanks

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Twobarrows

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Re: Wiring my new Bathroom Extractor
Reply #1 - Aug 7^th, 2009, 11:34am

You have a basic fan that doesn't have a timer function to continue running after the light is switched off, you may want to change that for one that does have this function (just over £20 in TLC I think).
Otherwise connect Eart to earth, Blue to Blue, then select whichever one is NOT the permanent live out of the Red & Yellow (probably Yellow) as this is the switched live, and use this, it will be off when the light switch is off & live when on.
The fan will stop as soon as you turn the light off though, and after a while you will wish you went for the timed version

Good luck.

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