I recently had a very similar problem and am looking for the same answer. For some reason at our school some cicuits are doubled up on the third electric. There are to circuit 94's and two circuit 87's etc. We had a cyc light plugged into one of the circuit 94s and a fresnel plugged into the other circuit 94. Both came on for about five seconds before turning off and now refuse to come back up. I'm assuming we tripped a breaker on the dimmer rack that just needs to be reset because the lamps are not blown. I just think it's really out of the ordinary to have circutsdoubled on one pipe. If I wanted that I would just use a two fer...