01-03-2007, 06:39 PM
Just because some cf bulbs are rated for use in an enclosed fixture doesn't mean the fixture is rated for that. The glass bowl on an enclosed fixture can shatter from the heat. It could kill somebody.
[quote M A V I C]The bulbs are often brighter than their rating suggests.
CF bulbs quickly lose about 10% of their brightness, and then slowly lose more.
You can't really use the 13w cf = 60 watt incandescent equivalencies, because A) 60 watt bulbs from different manufacturers could put out widely different lumens, and B) CF bulbs dim as they age.
I've yet to have a CF bulb burn out, but I have replaced a few because they grew dim.
[quote M A V I C]The bulbs are often brighter than their rating suggests.
CF bulbs quickly lose about 10% of their brightness, and then slowly lose more.
You can't really use the 13w cf = 60 watt incandescent equivalencies, because A) 60 watt bulbs from different manufacturers could put out widely different lumens, and B) CF bulbs dim as they age.
I've yet to have a CF bulb burn out, but I have replaced a few because they grew dim.