wiring a timed extractor fan

[shanepaul53]

Hi there! If you read this Breezer, can you reply as I have read a bit about extractor fans written by you and I have a few questions on some things I didn't quite understand.

I have nearly completed an ensuite and want to deal with the ventilation now. I have a timed extractor fan which I want activated when the light is turned on.

When I wired the lighting to the ensuite I cut into the lighting ring and added a 20 amp 4 way JB. From the JB the lighting is supplied as per guidance I received here and from other sources. Now, I want to add the extractor fan but not too sure how to correctly do this and the manufactures instructions are not too clear.

As a timed fan requires a L, SL and N conductor, how best can I do this? Can I source this from the JB which serves the light as that has a SL, PL and N etc. If so, then how do I correctly wire this through a 3amp DP before connecting to the fan? Have you got a wiring diagram, as a picture can often be a lot clearer?

Thanks for you advice.

 

[BigJon]

You will require a 3 pole fan isolator and not a 3amp DP Switch.
Use some 3 core twin and earth from your junction box and
wire to your 3 pole isolator:-

Brown - permanent Live = L1
Black - Switched Live ( sleeve Brown ) = L2
Grey - Neutral ( sleeve Blue ) =N

Then take another 3 core twin and earth ( or 4 core flex ) from outgoing side of isolator and connect to fan as :-

Brown - L
Black - T ( timer )
Blue - N ( neutral )

continue earths as required


Hope this helps a little

 

[comms]

Or take a look at post 11
//www.diynot.com/forums/viewtopic.php?t=7553

 

[empip]

Or this one with the missing cpc added, DP pull cord to Junction box.