Replacing an extractor fan

[Vkpearson]

Hi there ... New to the site and wondering if someone can help me.

Am replacing an extractor fan in bathroom that hasn't,t worked since we moved in. The house is 14 years old.

The replacement fan is a basic model (no timer) but the one removed obviously was a timer one since the cable is a three core (red, blue, yellow wires and earth).

My question is how to wire to new fan which obviously only has two connections ... As in for twin core cable ....permanEnt live L and neutral.

Which cable wire should I use for the live ... The permanent or the switched? How do I terminate / do withe the other?

Many thanks

 

[seasickstevie]

Assuming you'll want to switch it off (as apposed to running 24/7), you're going to need it connected to the switch wire.

Incidentally, the chances are the old fan was okay. It's often the timer that pops it's cloggs first. You could've just by-passed the timer and it would have worked.

 

[Vkpearson]

Yes do want to turn it off ... Forgot to mention there s an isolator switch outside bathroom... So wire the switched live .... Yellow one right? Into the live connection. What should I do with the other red wire from the three core cable? I was thinking put it into separate terminal and wrap in insulating tape? Ta

 

[RF Lighting]

Yes that will be fine. You don't need to tape it up though as it is already inside an enclosure.

 

[Vkpearson]

Many thanks .... Job for tomorrow morning one

 

[afleming]

Hi, I have exactly the same problem, as VK Pearson, trying to replace the fan, and seem to have had 3 phase cable going to the old fan. Pardon my ignorance, but I thought the Red, Blue and Yellow were all live, I couldn't work out where the neutral was ??? many thanks

 

[AndyPRK]

Blue would be neutral in that case

and Yellow usually switched live

 

[afleming]

Thank you, will go try that now. My husband will be surprised with my handy work!! Cheers