Shower extractor fan wiring

[Richie62]

Hi all,
i would like to know which is the best way or ONLY way i can install a overhead shower extraction unit with a single low voltage lamp encased in. The shower is a 10.5kw unit with a 10mm feed and a 40amp RCD, the pullcord switch is double poled. The bathroom has a window for natural light and ventilation and has 4 low voltage lamps wired on the house lighting main. At the moment I am carrying out other works on the house which include having a couple of new ring mains and a new Consumer Unit (which a Qualified Electrician will be installing ) the consumer unit is 30+m from the bathroom. I would like the extractor/light to be active when only the shower is being used and independent of the bathroom lights as dont need the main lights to be on during daylight. Can I wire it up to the pullcord switch of the shower isolation (knowing its a 40amp RCD and possible putting in an inline fuse) so the extraction/light come on with the shower or do I have to put a separate circuit and switch in :sad:.
All help/advice gratefully received
Thanks, Rich

 

[telectrix]

i'd have the fan independent of both lights and shower. then you can control whenever you want it. as work in a bathroom is notifiable under part p, ask your electrician's advice.

 

[Richie62]

Thanks Telectrix, I was affraid that would happen, I just didnt want another pull switch in the bathroom which would make it 3, the kids are bad enough for turnig things off as it is lol.

 

[telectrix]

shorten the cord. of fit an occupancy sensor .

 

[Richie62]

I wish!!! my youngest is 6ft8. The sensor sounds like a good idea, thanks. A rethink is in order