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Can you use a 100 watt bulb in a bathroom fixture designed for a 60 watt bulb?


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Wiki User
2015-07-15 18:38:09
2015-07-15 18:38:09

NEVER! NEVER! NEVER! The current draw from a 100W light greatly exceeds the design limits built into the 60W fixture. The end result would be a fire.

You can use florescent light bulbs to get more light with less amperage. You get 100 watts equivalent lighting for 23 watts and will not create a fire hazard.


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No. Fixture rating is based on the ability of the fixture to dissipate the heat of a bulb. A 75 watt bulb produces more heat than a 65 watt bulb which will result in too much heat build-up for a fixture designed for the lower wattage. If you MUST use a larger bulb, change the fixture.

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Yes, the rating of fixture wattages is the maximum allowable wattage that the fixture was designed to operate at.

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Smaller watt bulb will prevail- The bulb may last longer but may not be as bright as a higher number wattage bulb.

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Yes, the rating of the fixture is the maximum size bulb that the fixture should take. The fixture is rated to dissipate a certain amount of heat that is generated by a bulb. By putting in a bigger bulb and thereby generating more heat than the fixture was designed for, could destroy the fixture. Some fires have been known to start this way.

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Look at the wattage capacity of the fixture. Some fixtures are limited to 65 watts, some can take much more. If you use a larger bulb than what the fixture was designed for you create a fire risk. If you need to use a larger bulb but the fixture is limited to 65 watts, you need to change the fixture.

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