I've got an 5 HP 3 phase air compressor wired through a rotary phase converter into a single phase 240 service panel, 3 legs of power ( one manufactured two from the service panel) and a ground/neutral. The compressor shuts off and turns on with a 110 volt pressure sensing switch. When I wired the pressure switch I jumped the 110 volt supply from one leg of the 3 phase supply and my 110 neutral is the 3 phase ground. This works fine but is it dangerous? cheebster direcway com add the at and the dot
- posted
19 years ago