extractor fan - wiring question

[diylady]

Hi all

I’m after some advice please. My downstairs toilet fan needs replacing and tonight i whipped off the cover ( power off of course) to find the attached wiring - see picture . My surprise is that the red live is not connected to anything. Is this normal? Also the loop between the T And L? The set up of the fan is that it is switched on by the light switch. No isolation switch anywhere . The fan i believe has been in place since the property was built in 1995. Just out of interest . The T - is switched live right? Is this because of a timer ( i didn’t know it had one as it has never worked. Have only been in the property a couple of years) or because power is coming from the light.

 

[EFLImpudence]

Yes the T is for Timer.

It would appear that whoever did it, did not want the timer run-on feature - just off/on with the light.
That is how that would be done.

Presumably the red is permanent live. Check and if it is put it in L and remove the link wire - or do that with your new fan.

 

[diylady]

Just picking up on this post from a couple of months ago. ( Covid and school holidays distracted me). I have my new fan - an envirovent silent with a timer 100mm: I’ve had a look and i’m concerned that the wires are not ling enough to reach the the fan’s terminal block ( see pictures) so wondering what my options are to extend the cables to reach the fan . Do i need a whole new piece of cable ? or can i use a terminal blocks/ splices/ wago’s?

 

[Taylortwocities]

In the old fan there is 3-way terminal block, you could use that. You could use the three wires from the old fan too!

PS. Your old and new fans are timer fans, but it is not currently wired to provide the timer function.

 

[diylady]

In the old fan there is 3-way terminal block, you could use that. You could use the three wires from the old fan too!

PS. Your old and new fans are timer fans, but it is not currently wired to provide the timer function.

Thanks for the reply .. I would do that but i’m a little nervous at destroying the old fan in case i make a huge mistake with the install( not that much can go wrong i think). - just confidence but i am always like this and end up doing a good job . So to avoid this i need a short length of 3 core and earth cable ( not sure what size 1.5mm? and a terminal connector strip. What is the difference between these terminal connectors and Wago connectors ? I guess space is limited here maybe

 

[SUNRAY]

Hi guys.
I've started another thread, please keep this clear for helping OP
Thanks.

 

[diylady]

Would it be safe to use these to extend the cables .

https://www.screwfix.com/p/ideal-spliceline-in-line-wire-connectors-pack-of-10/42201

 

[Taylortwocities]

Yes.