I ran into this same problem this summer,on a house I wired last year. Have 15 ton of A/C in it. FLA of each of the three compressors was 32 amps. Lights dimming bad and VD was10 to 13 volts. Customer was not happy when we told him he has to live with it, cause it would be costly to try to correct it. I was thinking about an Isolation transformer, Any thougths? We meaning myself and the hvac installer.
