Fan wiring 240v

Alshymer

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Hi
A bit off topic but can someone help?
I am trying to install a fan in a bathroom connecting directly to the ceiling rose so that the light and fan operate together.
The fan has Live, Neutral and switched live.
I have connected the live and neutral wires but the fan does not operate.
I am wondering whether I need to join another cable to the live wire and connect to the switched terminal?
Otherwise the fan is faulty.
I would really appreciate a technical response.
Thanks
Alshymer
 
Fans with switched live and live connections have a built in circuit to run the fan for a short time after the power is switched off.

The switched live is connected to the switch (no surprise there then) and activates the timed delay circuit.
This circuit remains activated for a short while after the switched live is turned off.

The live is connected to permanent live and powers the fan whilst the delay circuit is activated.

Hope this helps.
 
Thanks very much for that.
So I have two wires on the light I wish to connect to.
I was assuming that these were live and neutral.
Are they both live though when the switch is on?
Does the neutral terminate at the switch?
Thanks
 
use a neon screwdriver to detect the switched live in the ceiling rose. Sounds to me that you have maybe wired the (switched) live and neutral from the rose to the permanent live and neutral in the fan. If so you need to put the wire into the switched live in the fan and wire a permanent live from somewhere. In any case you should really have the permanent live supply protected with a fused connection unit before the fan.
 
Hi
Thanks again. Yes that was the conclusion I was coming to.
I just thought I could take the two wires from the light and power the fan in parallel.
Obviously I need a permanent live from somewhere else which needs to be protected by a fused spur.
Thanks very much for your time.
Best Martin
 
Before you go any further are the fan and the light the same voltage ?
If not stop now, do not proceed to go. Do not collect £200!

Assuming they are the same voltage .. One of the wires at the light fitting is switched live, the other is neutral.
But I think, given the basic level of your questions, this job may be a bit above you.

Your options are
a) Get someone else to do the job.

b) Do the job yourself. (this option should not be used if 240v!!!)
1) Determine which wire at the switch is switched live and which is neutral.



2) EITHER - Connect switched live supply to both switched live and live on fan. This will eliminate the delayed running but the fan will work when light is on.
OR locate a permanent live and attach this to the fan using suitable gauge wire and appropriate fuse; plus connect switched live supply to fan.


3) Connect neutral supply to neutral fan
 
Last edited:
r4dent said:
Before you go any further are the fan and the light the same voltage ?
If not stop now, do not proceed to go. Do not collect £200!

Assuming they are the same voltage .. One of the wires at the light fitting is switched live, the other is neutral.
But I think, given the basic level of your questions, this job may be a bit above you.

Your options are
a) Get someone else to do the job.

b) Do the job yourself. (this option should not be used if 240v!!!)
1) Determine which wire at the switch is switched live and which is neutral If you don't know how to do this go to option a.



2) EITHER - Connect switched live supply to both switched live and live on fan. This will eliminate the delayed running but the fan will work when light is on.
OR locate a permanent live and attach this to the fan using suitable gauge wire and appropriate fuse; plus connect switched live supply to fan.


3) Connect neutral supply to neutral fan
Click to expand...
Thanks again and I do appreciate your comments especially about my naivety!!
I had thought that option 2 would work but only when the light is on. This might suit my purpose.
Otherwise I have a permanent live close by which I can use but protected as you say.
Thanks for everything.
 
Alshymer said:
Thanks again and I do appreciate your comments especially about my naivety!!
I had thought that option 2 would work but only when the light is on. This might suit my purpose.
Otherwise I have a permanent live close by which I can use but protected as you say.
Thanks for everything.
Click to expand...
I'd leave to a qualified electrician, there is too much chance of misidentification if your not experienced.
 
Take a photo of the wires at the rose, it would answer loads of questions as there should be 3 live wires, a switched live and two neutrals at the ceiling rose
 
Hi
Thanks for all of that information.
It is now working as section 2 and that is good enough for me.
Best wishes
Alshymer
 
Petes said:
Take a photo of the wires at the rose, it would answer loads of questions as there should be 3 live wires, a switched live and two neutrals at the ceiling rose
Click to expand...
There is no rise, just a spotlight on a bracket of 2.
Thanks A
 
Alshymer said:
Hi
Thanks for all of that information.
It is now working as section 2 and that is good enough for me.
Best wishes
Alshymer
Click to expand...
glad you got it sorted. you dont have an overun facility with this set up though.. just hope you have put an inline fuse before the fan
 
AFAIK all (or most) work on electrics in a bathroom is notifiable, and your lack of understanding of the requirements for wiring the fan shows just why this is so.
 
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