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Old 02-20-2009, 10:48 PM   #1
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hot dimmer switch


recently installed a 3 way dimmer switch in my family room. Switch is a Lutron, rated at 600w. Installed 4 - 100w bulbs and 2 - 60w bulbs because that is what I had on hand at the time. After the lights have been on for a couple of minutes, you can feel the switch cover and screws are warm/hot. I called the mfg, who said the metal plate on the front of the switch acts as a heat sink, and will normally run around 120 degrees, and not to worry about it.

Does this sound right to anyone? I assume changing the last to bulbs to 100w will make this slightly hotter. Should I consider getting a larger switch? Appears they make a 1000w in the same design as what I have now - its just 3 times as much.

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Old 02-20-2009, 11:32 PM   #2
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hot dimmer switch


This dimmer is pretty well loaded, but not overloaded. They do indeed get warm/hot when loaded. You should be able to hold your hand on the cover plate and it'll feel rather warm, but not so hot that it'll burn you. The screws will be even warmer. You probably can't comfortably press a finger on one of the screws for any length of time.

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Old 02-21-2009, 06:18 AM   #3
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hot dimmer switch


I agree that you are pushing the limits on the 600W switch, but you are still under the rated limit. Yes, it will get warm. If you are not comfortable with that, go to the 1000W.
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Old 02-21-2009, 08:22 AM   #4
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hot dimmer switch


Do not remove any part of the dimmer unit such as a ribbed cover plate, for the purpose of putting on a cover plate of your choice.

The ribbed plate helps dissipate heat and must be left exposed.
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Old 02-21-2009, 08:30 AM   #5
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hot dimmer switch


Your situation is NORMAL.
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