Question about florescent light bulbs

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  #1  
Old 01-11-07, 01:12 AM
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Question about florescent light bulbs

If a fixture is rated for a 60W bulb, can I install a 100W florescent bulb that uses only 23w of power?
 
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Old 01-11-07, 05:23 AM
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That would be a 23watt bulb so you can install it in the fixture. Fixture ratings are based on the actual wattage not the equivalent light output wattage.
 
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Old 01-11-07, 06:15 AM
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Wattage is the important number. The equivalent light output is only to tell you much much light you'll get as a comparison tool, but the output they give never seems quite as good as the incandescent - replace a 60w incandescent with a 60w equivalent CFL and it won't be quite as bright.
 
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Old 01-11-07, 11:56 AM
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replace a 60w incandescent with a 60w equivalent CFL and it won't be quite as bright.
Exactly, which is why I want to use these 100W CFL's. Also, they were $1.98 for a four pack at Walgreens...hard to go wrong there.

Thanks guys, I understand now.
 
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Old 01-11-07, 03:53 PM
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The only thing to think about is if it is an enclosed fixture; some of the florescent packs I've seen said they are not for enclosed fixture, only open-air usage.
I guess heat build up in the florescent electronics is the issue?
 
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Old 01-11-07, 04:09 PM
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Good point, I'll look for that.

Thanks Bob.
 
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Old 01-11-07, 06:44 PM
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I have done a bit of research into this and this is what I have found.

The mfg is the only one who can rate the fixture for a lamp max size.

Very few mfg have done so for florescent lamps.

It is highly unlikely that you can buy a florescent lamp that would make enough heat to cause a problem, but the fixture is not listed for this use.

lighting equivalent charts are easy to find. just google it.
 
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Old 01-13-07, 12:00 AM
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Talking

Just make sure it's not on a dimmer switch. Florescents and traditional dimmers are a bad mix.
 
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Old 01-13-07, 12:49 AM
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Now what would make you say that?

I did the work on a restaurant that used CF's in the restrooms. The entire store used a dimmer system for the internal lighting. The restroom lights did this really neat disco thing with all the flashing going on. I was having flashbacks of the 70's. The restrooms dimmer system got bypassed.
 
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Old 01-13-07, 12:53 AM
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If you hadn't bypassed the dimmer for the CFs, I bet they'd be flashing to the music, even after the tunes had stopped!
 
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Old 01-13-07, 12:58 AM
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They flashed all the time simply because of the fact the dimmers were causing the problem. It requires special dimmable ballasts to dim flourscent lighting.

It was actually quite funny when it was first noticed. I was imaging some slightly (or more) intoxicated patron heading in there and having some real problems with them. Either that or some customer with epilepsy having an episode from that.
 
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