Bathroom fan on a dimmer sith leds.

[i=p/u]

Fitted a fan for friend today and forgot it was off the lights, so now is on dimmer and seems to work fine. I see Amazon sell plug in dimmers for fans ..
thoughts men??

 

[westward10]

No idea what you are getting at.

 

[Dave OCD]

He's saying the switched live to the fan will reduce in voltage as the lights are dimmed. But I wonder if that's just for the timer circuit and the permanent live runs the fan motor.

 

[i=p/u]

No timer on the fan, the switched live from lights is powering fan.

 

[westward10]

What is it you are wanting to know.

 

[DefyG]

If the dimmer is slowing the fan then it may be totally ineffective as a fan (ie ltrs/min reduced) and you may as well not have one at all!

 

[Dave OCD]

I would have thought below a certain voltage the fan motor would just stall.

 

[DJAndy]

Depending in the make & model trigger voltages can be quite low. I've seen bad switches passing ~ 50v, as long as the perm live is normal the fan starts & runs happily.

 

[i=p/u]

Total load including fan is only 50w. What I'm asking westward, is can you see any likely problems coming from this bathroom fan with no timer on a dimmer switch?

I can move cable and maybe add in pull cord

 

[Dave OCD]

I think I'd put the fan on a separate pull switch, better for the motor and added convenience for the end user.

 

[Dave OCD]

Depending in the make & model trigger voltages can be quite low. I've seen bad switches passing ~ 50v, as long as the perm live is normal the fan starts & runs happily.

This isn't relevant as we're not talking about a timer fan in this instance.

 

[i=p/u]

Just throwing it out there, I knew had to change it.

 

[i=p/u]

I would have thought below a certain voltage the fan motor would just stall.

Didn't seem to struggle, slow fast

 

[DefyG]

Didn't seem to struggle, slow fast

Did you test it with an anemometer, I'm sure you'll see the difference!

 

[i=p/u]

Defyg your off the rictor, the dimmer does control the fan, but isit a good idea or not. Il likely change it tomorrow if I have dp pullcord about me