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Old 05-18-2008, 02:24 PM   #1
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I have a light in a bedroom that shuts off after about 30 minutes, then comes back on in about 20 minutes. Is the bulb too high of a rating for the fixture? I have never seen this before.


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Old 05-18-2008, 03:30 PM   #2
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Many lights have thermal cutoffs for when they get too hot. This is very common in recessed lights.

I would imagine that your bulb wattage is too high, and is therefore causing the light to shut off. Try a low wattage bulb and see if that takes care of it.

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Old 05-18-2008, 04:05 PM   #3
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Also use the correct type of bulb. should be stated stated on the fixture the type and max wattage of the bulb
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Old 05-18-2008, 11:10 PM   #4
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I would have to agree with the thermal shutoff as I heard it click when the light shut off. I was in the room working and the light would go off every 30 minutes. Thanks so much for the help!!!
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Old 05-18-2008, 11:22 PM   #5
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Using too much light bulb for your fixture is an unsafe thing to do, despite the thermal shutoff. I would be sure to correct the situation before you have a big problem, and not just deal with the inconvenience.
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Old 05-19-2008, 07:03 PM   #6
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The light in question is a recessed light. The fixture says to use a max 75W bulb, which was installed. I removed it anyway because I was a little concerned about the possibility of a fire hazard. I don't know why it would cut out with a 75W bulb in 75W fixture. Oh well, I guess it doesn't really matter anyway because I will be removing the recessed lighting and installing a ceiling fan .

Thanks Guys
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Old 05-19-2008, 07:34 PM   #7
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Just curious at this point. Was the 75 watt lamp the correct type? A standard incandescent lamp will overheat a recessed fixture, but the flat lens spot light type lamps the fixture calls for, will not over heat the fixture.
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Old 05-19-2008, 11:23 PM   #8
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Quote:
Originally Posted by jrclen View Post
Just curious at this point. Was the 75 watt lamp the correct type? A standard incandescent lamp will overheat a recessed fixture, but the flat lens spot light type lamps the fixture calls for, will not over heat the fixture.
Me too! What type of bulb was in there?
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Old 05-28-2008, 07:04 PM   #9
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Sorry for the late reply guys. I did use a standard 75W incandescent bulb. Thats probably why I had the thermal cutoff. I looked at the fixture rating, but I didn't see any indication of a bulb type.
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Old 05-28-2008, 07:55 PM   #10
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Maybe a non-IC can with insulation too close?

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