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Modern_Classic's avatar

Which energy saving light bulb...

Asked by Modern_Classic (578 points ) April 15th, 2007
is okay to use if the lamp says maximum wattage is 40? The actual wattage of a 60watt equivilant ESLB is around 20, so is that okay to use or not? My guess is it is ok because the lamp rating is a limit based on the heat generated by the bulb. Any definitive knowledge? Thanks.
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8 Answers

bpeoples's avatar
Lamp maximum wattage is based on amperage, and probably heat output, although with non-halogen bulbs that's not so much a problem.
bpeoples's avatar
So as long as the actual wattage of the bulb (not the equivalent lumen output) is less than 40watts, you'll be fine
bpeoples's avatar
(Oh: In other words, your 20 watt bulb will be fine in the 40 watt maximum)
andrew's avatar
I use a 60w ESLB in my 60w lamp (for more light). I've had no problems.
sarahsugs's avatar
Can someone explain how you know if you are using an energy saving light bulb? Are they flourescent? Something else? What makes them energy saving?
ben's avatar
The most common "energy saving lights" are compact florescent and they generally have a curly cue look: http://en.wikipedia.org/wiki/Image:Compact-Flourescent-Bulb.jpg
ben's avatar
They are energy saving because instead of the very inefficient process of electricity traveling through a thin filament (which loses a lot of heat... I think around 90% of normal incandescent light bulb energy goes to heat), they excite certain gases, which then emit light. Because of this different design they use much less energy (about 75% less), and last much longer (about 10 times).
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