Low Glow on LED's

[PhilCumbria]

Hi can anyone help.

I have installed some LED's in my bathroom and a fan which has a time delay on it. When I turn the LED's off I noticed they still have a Glow to them, so I put my Multi accross one of them and there are 103v present when switched off. If I disconnect the switch wire to the fan the voltage disappears. Can anyone offer any advice as to how I get rid of the voltage feedback from the fan???

 

[Redvanman]

So when you turn the fan off at the isolator the glow goes
does it also stop glowing after the fan has stopped running

 

[Barry White]

Been a few threads about this prehaps this will help you
http://www.electriciansforums.co.uk...m/97651-led-lamps-extractor-fan-problems.html

 

[PhilCumbria]

If I turn the isolator off the glow stops yes, but if the isolator is on and the fan stops, they still glow..

 

[Redvanman]

Have you wired it thro the fan switch ie feed, switch line all going thro fan switch
What make are the LEDs

 

[PhilCumbria]

Yes all through the fan switch correctly, the LED's are Minisun Warm Whites... there are alot of electronics in the fan I'm wondering if it is something in the fan that is causing it... I dont know really.

 

[Leesparkykent]

Disconnect the fan and make cables safe in wagos as a temporary measure and see if it's still happening, Process of elimination.

 

[Anthony S]

Have you not got a fan isolator switch wired in ?

 

[PhilCumbria]

Yes Anthony, When i switch the fan iso off the LED's go out.

 

[Anthony S]

Yes Anthony, When i switch the fan iso off the LED's go out.

Ok just wondered, google it and there's plenty of info on it and so as this forum.

 

[spark 68]

Phil measure your "phantom voltage" with an analogue meter if you have one, if it disappears when doing this then you need a snubber.

 

[PhilCumbria]

Hey, Yes it does disappear, so please tell me, what is a snubber? Cheers

 

[spark 68]

Hey, Yes it does disappear, so please tell me, what is a snubber? Cheers

The subject has been done to death on here, search for terms such as "snubber" and "phantom voltage" etc. on here and this will explain all, there is a search forum box at the top of the page near where you sign in.

 

[HappyHippyDad]

This thread will help you Phil http://www.electriciansforums.co.uk...35-led-spotlight-glowing-dimly-power-off.html

In particular look at post number 2 for an explanation of why this is happening and post 9 on how to take action to remedy it.

 

[HappyHippyDad]

The subject has been done to death on here, search for terms such as "snubber" and "phantom voltage" etc. on here and this will explain all, there is a search forum box at the top of the page near where you sign in.

Hi S68 :smile5:

We seem to use the terms 'Induced' and 'phantom' interchangably.. Is that correct? One seems to imply that there really is voltage there (i.e 'induced') and the other suggests its not. If it makes the bulbs glow then it must be there? :uhoh2:

 

[spark 68]

Hi S68 :smile5:

We seem to use the terms 'Induced' and 'phantom' interchangably.. Is that correct? One seems to imply that there really is voltage there (i.e 'induced') and the other suggests its not. If it makes the bulbs glow then it must be there? :uhoh2:

It could be capacitively coupled as well so I just used "phantom" as it could be down to either or both, having said that induced would probably need some current to be passing in one of the conductors to actually induce a voltage/current in an adjacent conductor, anyway I am a mere spark not a physicist so what do I know

 

[PhilCumbria]

Thanks everyone for your advice, I'm sure I will overcome the problem with the suggestions you have made.