Isolator fan switch

[marsaday1971]

I have a new fan for the bathroom and want to know how to wire it in. I know i take a lead from the lights, but i am not sure how i wire up the isolator switch.

Do i just take a link from the fan to the isolator or do i also take a link from the lights ?

 

[cagedanimal2010]

without sounding disrespectful are you a spark?
if not i would give your local sparky a call.

 

[J@mes]

you get an electrician in, especially when it concerns electricity in your bathroom.

Not the answer you are looking for, but probably the only one you are likely to get

sorry!

 

[vitoboy]

get some one who knows...its safer..

 

[Hawk81]

I don't mean to sound rude but maybe you should get someone qualified to do this for you. there is more than you think.

 

[marsaday1971]

I thought this forum was about advise.

I have a sparky and he is on holiday at the mo. I am doing the first fix and need to lay the cable for my fan.

I have an isolator for the downstairs bathroom and it has 2 cables going into it - one from the fan and another from the light i imagine. So for my new bathroom do i need to provide the same ?

I have run the cable from the fan to the isolator, but do i need to add another to the lights in the bathroom?

Please do not reply with "speak to sparky" as you will waste your keyboard strokes.

Thanks

 

[telectrix]

is it a timer fan? run 3core&e isolator to fan. ditto light to isolator ( assuming light is wired " loop in" , i.e. you got L,N, S/L in light fitting

 

[sjm]

Do you have RCD protection for your lighting circuit? You should run the bathroom lighting circuit supply through a fused swith spur, with RCD if not already in place, this will allow you to fuse the supply down to 3 amps as required by most, if not all, fan manufacturers. I am now assuming that you are fitting a fan with run on timer and want it to operate with the lights. Take a permanent live and one switched live plus neutral and earth to the 3 pole fan isolator from the main light 3 core and earth cable. I then use 3 core flex from the isolator to the fan as they are almost exclusively class 2 (no earth required). Sleeve cpc as switched live ie brown sleeve.

 

[Hawk81]

I thought this forum was about advise.

I have a sparky and he is on holiday at the mo. I am doing the first fix and need to lay the cable for my fan.

I have an isolator for the downstairs bathroom and it has 2 cables going into it - one from the fan and another from the light i imagine. So for my new bathroom do i need to provide the same ?

I have run the cable from the fan to the isolator, but do i need to add another to the lights in the bathroom?

Please do not reply with "speak to sparky" as you will waste your keyboard strokes.

Thanks

Well to be fair in your original post you did not mention that you were only doing a first fix as your spark was on his hols. This is a forum for advice and you will find most on here are very helpful but it does help if you give ALL the info. Somtimes it is best to reply with "speak to sparky" and after reading your first post again i stand by my first reply. After having all the info i would say if you run a 3 core flex from the light to the isolator then to the fan. this should leave it ok for the spark to work from there.

 

[marsaday1971]

Ah yes, that is what we did on the first isolator switch (3 core !)

Well i have laid normal 1.5 light cable so far and so will change that over tomorrow.

So from the light in the bathroom i will run 3 core to the isolator and then 3 core back up to the fan.

Thanks very much for the help, you have saved me there.

 

[telectrix]

as hawk says, it may be better to run flex to the fan as it's easier to terminate at the fan, the fan is not designed for flat 3core+ E and as you don't need earth from isolator to fan, 3 core flex with the g/y sleeved brown

 

[marsaday1971]

by flex do you mean 1.5mm lighting cable ?

 

[SimpleSimon]

Just quickly, where have u located the switch?

 

[telectrix]

yep, thats ok as long as it's 3 core. the fan needs L,N,S/L (permanent live, neutral, switched live)

 

[telectrix]

that's a good point. i usually fit the isolator outside the bathroom just below ceiling