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I wanted to switch the switches over to dimmers. Bought 2 of those $30 Levitron lumitron fancy touch dimmers rated at 600 watts according to the box.

6 x 75 watts = 450 watts on each dimmer according to my calculations.

After they are on for about 8 hours each bank starts to flicker and blink independently of each other. The metal on the dimmers get really hot.

The cans are all IC rated and there is even no insulation in the ceiling.

I switched out one of the dimmers yesterday and replaced it back with just a switch, turned on both banks, about 8 hours later the 6 cans on the dimmer started doing the flicker dance, the 6 on the regular switch burn true.

What the hell is going on? A 600 watt dimmer can't take 450 watts? 12/2 wire throwing off these dimmers? 20 amps throwing off teh dimmers?