Single Phase From Three Phase
Single Phase From Three Phase
(OP)
I have 240/120 Y 3PH power to a breaker panel. I would like to run a 240 VAC single phase 7-1/2 HP compressor from this panel. Is it correct to say I should be able to draw the power from the 'A' and the 'C' phase to make 240 VAC 1 PH. or will that not work?
thanks,
al
thanks,
al





RE: Single Phase From Three Phase
RE: Single Phase From Three Phase
RE: Single Phase From Three Phase
For Motor Overload Protection reference NEC 430-31
I looked at a Cutler Hammer Enclosed control product guide and a NEMA Freedom Starter Single Phase Magnetic /Non-combination Full Voltage Non-Reversing /Interchangeable Heater OLR / 600VMax 7.5HP 230VAC list cost $467. This may be expense, but to overload the motor and replace it several times could also be expense. It depends on your application. If your application is a very once in a while operation forget about the starter, but if it is a continuous operation and starter is wise. However one burned out motor makes the starter price seem insignificant.