Wiring for extractor fan from light switch

[Jarhead]

Hi, I've no real experience of electrics and looking for some advice on where I'm going wrong with this simple wiring set up for a bathroom extractor. Going from bathroom light switch (pull cord) to isolation switch to a Fantronix (timer) extractor fan. Wired this way the fan does nothing.

Bathroom light has Live (L1) black wire, Neutral (COM) red wire and Earth, yellow and green.

Fantronix extractor requires Neutral (N), Live (L1) and Switched Live (LT)

From light switch to isolation switch I've wired Neutral to neutral, taken two wires from the Live for L1 and L2 to isolation switch then from isolation switch to fan. Is this where I've gone wrong? Taking two wires from the Live and splitting them for L1 and L2?

Appreciate any help or advice

 

[pete01]

The black isn't a neutral.

 

[terryplumb]

Your light switch doesn't have a neutral

 

[Harry Bloomfield]

Your light switch doesn't have a neutral

Plus, all of those terminations are absolutely terrible! There should be no bare wire, visible outside the terminals.

 

[EFLImpudence]

Even if you made the same mistake as lots of people regarding neutrals, you have connected the live wire to the neutral terminal of the fan

Please do not do any more 'electrics' until you have some idea of what you are doing.

 

[RandomGrinch]

Plus, all of those terminations are absolutely terrible! There should be no bare wire, visible outside the terminals.

I may be very wrong, but does it also look to be an automotive grade 12/24V, 4 core cable?

 

[Harry Bloomfield]

I may be very wrong, but does it also look to be an automotive grade 12/24V, 4 core cable?

It could well be, the insulation looks to be quite thin, plus strange colours for mains rated cable - but I'm only seeing 3 cores.

 

[terryplumb]

It could well be, the insulation looks to be quite thin, plus strange colours for mains rated cable - but I'm only seeing 3 cores.

Odd cable indeed ,it does have a yellow that's cut off at both ends.

 

[Sureitsoff?]

Also why do the two wires in what he calls a neutral at the switch ie the white and the black connect to L and LT at the fan.

Is this thread a wind up?? surely someone cant be that bad(can they??)

 

[opps]

It seems to be an inline fan. it is available on Amazon under various names

Check out this Amazon review of Kair MultiFan In Line Fan 100mm with Timer

Confusing wiring but actually very simple

www.amazon.co.uk

 

[opps]

Hi, I've no real experience of electrics and looking for some advice on where I'm going wrong with this simple wiring set up for a bathroom extractor. Going from bathroom light switch (pull cord) to isolation switch to a Fantronix (timer) extractor fan. Wired this way the fan does nothing.

Bathroom light has Live (L1) black wire, Neutral (COM) red wire and Earth, yellow and green.
View attachment 360422

Fantronix extractor requires Neutral (N), Live (L1) and Switched Live (LT)
View attachment 360429

From light switch to isolation switch I've wired Neutral to neutral, taken two wires from the Live for L1 and L2 to isolation switch then from isolation switch to fan. Is this where I've gone wrong? Taking two wires from the Live and splitting them for L1 and L2?

View attachment 360423


Appreciate any help or advice

As others have pointed out...

Your pull cord switch does not have neutral. The only pre-existing cables in the light pull cord are the live and switched live. On the balance of probability, you need to take your supply from the light fitting. That should have both the permanent live, switched live and the neutral. Given that it seems to be an inline fan I guess that you can run the cable down from the loft to the light ceiling rose/fitting.

The rose (normally has a perm live and neutral running from a light fitting elsewhere). From the fitting, a perm live runs down to the pull cord, the other cable runs back as a switched live

You will then need to run from it it to your isolating switch and back to the extractor.

I understand why the electricians are concerned about your lack of knowledge. I would recommend that it might be prudent to pay someone to wire it for you, but if you are insistent on doing it yourself, I would rather that you understood how the connections work. Look at the following (image number 1)

Older colour codes for ceiling rose

Older colour codes as previously used on UK lighting circuits with ceiling roses

flameport.com

Hopefully it will explain where the wires should go. If you don't understand, then, yes, please pay someone to fit it for you.

Best o'luck