Return to the Electrical Wiring Forum | Post a Follow-Up

CFL bulb Flickers in track lighting

Posted by obrionusa (My Page) on
Tue, Jan 17, 12 at 7:30

I have some track lighting on my ceiling and its wired into a wall timer switch. Some of the bulbs flicker occassionally while in use. Some of the bulbs do it when its off too. Any ideas? I put another brand cfl thinking it was the bulb and it doesnt help. It only does it with a cfl, It doesnt do it with the older type bulbs.

Follow-Up Postings:

RE: CFL bulb Flickers in track lighting

While this is not the season for air conditioning, fluorescents located near AC vents often will flicker when the cold air blows on them. Is your wall timer electronic? Digital display? That may be the problem.

RE: CFL bulb Flickers in track lighting

"I have some track lighting on my ceiling and its wired into a wall timer switch."

Unless the time has mechanical contacts and not a solid state switch it is distorting the voltage waveform just like a dimmer.
It also leaks a small amount of current even in the off state.
This can cause compact florescent lights to slowly build up enough charge to try and light, then quickly shut down when the charge is used.
The lights appear to 'flash' on (actually the striking circuit trying to get the bulb running) but without enough current available they cannot stay on.
If the other lights are low voltage their power supplies may also be having problems with a distorted waveform.

You should never run compact florescent lights or any type of low voltage lighting on a dimmer or solid state switch that is not listed by the light manufacturer as suitable.

It can damage the power supplies and lead to overheating and even fires.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here