What determines the voltage and phase of a compressor?
The voltage and phase of the compressor depends on the power supply available. Whenever possible, use three phase instead of single phase. The operating current of three phase is about half that of the equivalent single phase motor (same HP and voltage.) You should also connect the motor to the highest voltage available. The operating current at 230 v is half that of 115 v. By following the above recommendations, you greatly reduce the chance of a voltage drop in the line, which can cause problems upon start-up.
