Yes, Yes

It is very important to size dimmers correctly, they also must be de-rated if muliple dimmers are in one box. A common dimmer is 600 watts, have up to 600 and your fine. Have 2 600 watt dimmers in one box you now can only put 450 watts on each dimmer.

Have a 1000 watt dimmer, 1000 watts of light, put in 2 1000 watt dimmers and you're down to say 800 watts for each (Guessing at the 800, don't have any instructions near by. The wattage coninues to decrease as you put more dimmers in a box.

I always wondered when occasionally I would see at a building, a fancy office with six seperate switch boxes at the door each with a dimmer. Thinking "Hah what a bonehead electrician, must not of known there are multigang boxes out there" Truth is they were purpously put in that way so 1000 watts could be used on each one.

Also make sure if you dim low voltage lighting, figure out if it is a magnetic or a electronic transformer and buy the appropriate dimmer for it.

Dimmers are great! Hah I dim everything, just have to plan them correctly.

The lutron dimmers, for example, have metal heat sinks that have "wings" which need to be snapped off when adjacent to another dimmer. The instructions are pretty clear about derating. In a three-gang box the outboard dimmers would have a greater capacity than the "wingless" dimmer in the center (each of the outboards has one wing remaining).

Hey...my electrician's name was Spencer!! (and fabulous, BTW!). You don't happen to be in upstate, NY?? Or maybe that's a common name for an electrician ;)

--Sarah

Nope in Kansas city here. Hah, maybe it is.