Don, the compressors are wired so that one compressor comes on first when the preset pressure switch calls for it. There is a timer that allows the other compressor to come on after the 1st compressor has started as to decrease the start up load of both compressors on the breaker feeding them. Why the original electrician wired the pressure switch wires through the overload relay contacts, I don't know. I don't see why they can't be just wire nutted together, since there is a timer that regulates when the 2nd compressor comes on. If that could be done, then the wires feeding one side of the coil could be put back on the overload relay like it is intended to be. Remember they have got the control wire from the pressure switches tied in someway to the control circuit. They seem to be breaking the neutral that goes to one of the relays through the pressure switches then through the overload contacts on the starter. I know this is confusing maybe without seeing the actual wiring that is there. There is no schematic of his wiring, except just a simple diagram. I'm mainly concerned of whether I can need to wirenut the wires that he has on the overload contact now, and put the wires that feed one side of the coil back where they were. No big deal here I don't think. I've got his compressors going, I just want to see if there is something that could possibly be wrong that could damage his compressors or any other danger. Thanks again.. Steve
Last edited by sparkync; 04/17/07 12:16 PM.
