Thx kwotipka -
by "switched" I meant that we have a switch panel at the sound booth that turns power on to certain lights/dimmers on the light bar.
Each switch is on its own 20 amp breaker in the distribution panel.
There is nothing near the light bar, with the exception of the ceiling tiles above it.
Unfortunatly, the light bar is not movable, and is suspended about 20 feet in the air - I am waiting on someone to bring a lift to get to it
Is there any harm in me plugging everything in as it is (assuming I get all the lights working) and seeing if the controller will work with the dimmers?
Thanks