It seems to me that ideally the shower extractor fan should come on automatically when the shower is switched on using the power control on the shower unit itself. But I don't see being able to do that because it would involve getting into the shower unit and connecting to the switched side of the shower unit switch. Now I could probably do this but it seems it's not what is normal practice.

So what's the normal way of doing things? If I connect to operate from the light switch then what about in the daytime when you use the shower and want the extractor running but don't need the light on? Is it just expected that any time you use a shower you must have the light on no matter the time of day?

And as the regs require this ventilation when the shower is in use surely there's no point operating the extractor from a light switch because then it doesn't have to be used.


All seems odd to me and as I said...I'm confused.