If the extractor is linked to the light then per my second point above one has to make a conscious decision to turn on the lights even if when lights are not needed during daylight hours in order for the extractor to operate.
Light switch for light and extractor fan.
If the fan is operated by a manual switch then one has to make a conscious decision to operate that switch.
This is because many include a run on capability that is triggered by the operation of the light switch and it is not permitted to have a device powered from two separate circuits.
Using wire strippers peel an inch of insulation from the end of the black and white wires.
3 push switch plus lights.
Extractor fans in bathrooms are frequently powered from a lighting circuit.
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Locate the switch cable which must be glued through the top or side of the box that serves the fan or the light.
Connect the black fan cable together with the black light wire and the black switch wire and.