Can I use a 75w equivalent bulb (using 20w) in a 60w rated fixture?

Similar questions: 75w equivalent bulb 20w 60w rated fixture.

It's the 60 watt (lower capacity) in the 75 watt fixture (higher potential output) that can be the problem--it could burn out the bulb prematurely.

Yes, you are effectively replacing a 60W bulb with a 20W bulb (NOT a 75W). The equivalent rating is an estimation of the output from the energy saving bulb - In theory, the bulb should be marginally brighter than the older type (60W) and you should be making a saving on your electricity bill - no down-side to what you are proposing. The energy saving bulbs are generally cooler to the touch - it is the temperature of a conventional bulb of more than 60W that could cause a problem.

The only down-side of the energy saving bulbs is trying to get them to fit as some are a bit on the bulky side - other than that, there is every reason to change every bulb in the house to energy savers - they are really cheap at some supermarkets .

Yes, but...the reaon for the ratigns for incandescent bulbs is so that the fixture does not overheat and develop problems that could result in a fire. A 20W fluorescent bulb will only produce 20W of heat - which is safe as far as fire risk is concerned. The chance you are taking, and the risks are different with different fixtures, is that the bulbs are more sensitive to heat than incandescents.

Typically, I have not had problems using a fluorescent bulb one step higher than the listing for incandescent (I.E. The 20W bulb replacing a 60W incandescent) but occasionally, in a fixture that traps heat, the lifespan of the bulb will be shorter.

" "Can someone help me design a wired spacer to use shorter 40w Lumiline bulb in 60w fixture. Maybe worth patent" "I want to use a CFL bulb in a fixture with a 75W maximum incandescent. What is the highest wattage CFL I can use?

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Can someone help me design a wired spacer to use shorter 40w Lumiline bulb in 60w fixture. Maybe worth patent.

I want to use a CFL bulb in a fixture with a 75W maximum incandescent. What is the highest wattage CFL I can use?

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