Ghost voltage

[algas]

Iv'e just replaced my hallway lights with LED's G9 bulbs,only noticed when it was dark the bullbs glowed ever so slightly, this morn I put my meter on and am getting 58v A/c, the wiring has not been changed its probably been like that for ages but as had low energy bulbs in old fitting 58v was not enough to fire them up. No dimmer or transformer on light circuit, could it be an induced voltage from ring main etc, as we used to get that prob when running wires to a 12v roomstat in a duct with 240v ring, any ideas please.

Alan

 

[bernardgreen]

The voltage is induced by the capacitive coupling between Live and Switched Live in the cable to the switch.

A snubber connected between Switched Live and Neutral will absorb the small amount capacitively coupled energy.

I use the following

Capacitor 0.047uF micro Farads 250 volts AC in series with a resistor 100 ohms

Which come pre-packaged as a contact suppressor from RS Components

RS Stock No. 206-7847
Manufacturer Evox-Rifa
Manufacturers Part No. PMR209MB5470M100

I have fitted them in ceiling roses between neutral and switched live

There are other sources of the contact suppressors

Read more: https://www.diynot.com/diy/threads/led-lights-will-not-go-off.270455/#ixzz6Ey6K1rIP

 

[algas]

Thanks for that Bernard, wifey on my case now expecting the house to go up in flames any minute, I don't think there is any danger leaving it as it is, and is quite use full as a night light. what do you reckon

Alan

 

[bernardgreen]

There is no danger leaving it as it is. Also it is very unlikely that the lamps will be damaged by the low voltage.

 

[algas]

Ok thanks Bernard as I thought.