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

How do I test a florescent light/fixture?

Posted by jerry_nj (My Page) on
Tue, Oct 11, 11 at 19:00

I have a GE electric kitchen range with a florescent light across its width above the control panel. The range is at least 10 years old, but the light has not been used much.

The blub is F26T8-CW4 10 Watt and it is operated by a three position switch. The switch is a rocker style with an Off position in which it can rest, and an On position in which it can switched to and is the center rest position, and it has a Start position that is momentary, is in that position only as long at the switch is held there. My recollection is I had to hold the switch in the Start position until the light flickered, and then I'd release. Now there is not even a flicker.

I was going to replace the bulb as that's the only way I know to test a florescent bulb. But, I was not able to find the subject bulb at either Walmart or Lowes.

I would like to make some test to see if the bulb is getting a Start and On signals. I have a volt-ohm-meter and know how to use it to check a socket for an incandescent bulb. Can I make some tests to assure that the florescent fixture is providing electrical power to the florescent bulb?

Follow-Up Postings:

RE: How do I test a florescent light/fixture?

My crossreference says an F18T8CW is the replacement for the F26T8

RE: How do I test a florescent light/fixture?

Sorry about my poor spelling, Fluorescent is the correct spelling (I think).

Amazon shows a starter FS25 as corresponding to the F26T8-CW/4 bulb. A starter is fixture dependent, as I recall some "ballast" designs include the starter (built in).

Thanks Randy, but I doubt the correctness of the swap bulb. The F26... is indeed 26" long and is a bulb built specifically for appliances, I have learned. It is on a 30" wide range (standard size) and just about covers the whole width, i.e., just enclosure of a couple of inches on each side.

I will see if I can easily open the cover further to check for ballast and starter.

 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