Discuss Extractor fan from shower isolator in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
Sounds to me that the prisable is a good idea .The main time you need the fan on is when the shower is on . If there is a window in the room you would not need the light on to have a shower, so if the fan was controlled by the light switch it may not be used. Much better that the fan comes on when the shower is in use. I have seen similar sets up with cooker extract fans connected to the outgoing side of a cooker switch. So the fan comes on when the cooker is turned on.
But the shower isolator shouldn't be used as a functional switch for the fan.
Why not?
Extractor fans have a duel function in most bathrooms. Moisture and odour removal. A switchwire to the light switch covers all these optionsIt will have a lot of wear and tear with daily use. And some fan isolators aren't the most reliable of things at the best of times. I would normally recommend people isolate the shower every time they have used it. Also the fan could do with leaving on for a few minutes after the shower has been used,
Correct. The shower switch is first and foremost a means of isolation for any service personnel working on the showerBut the shower isolator shouldn't be used as a functional switch for the fan.
Extractor fans have a duel function in most bathrooms. Moisture and odour removal. A switchwire to the light switch covers all these options
Ageed.Thats always a good option. But that's why I wire the switchwire for the fan back to the light switch. If homeowner requires a separate switch for fan just install a 2 gang switch. Bang. Done. In reality here everyone has a mirror light as well as a centre light so it's nearly always possible to have a light on without having to switch on the fan anyway.Indeed. Although it means you always have to switch the light on when you want the fan on. Even if it's daylight.
I still like the 'old fashioned ' fan with built in pull cord. If you want the light on then switch the light on, if you want the fan on then switch the fan on. I like a simple life!
It will have a lot of wear and tear with daily use. And some fan isolators aren't the most reliable of things at the best of times. I would normally recommend people isolate the shower every time they have used it. Also the fan could do with leaving on for a few minutes after the shower has been used,
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