3 Phase motor electrical installations
3 Phase motor electrical installations
(OP)
What is the correct wire callout for a 208V/3PH/60Hz packaged air conditioning unit (cooling only) with the following electrical characteristics:
minimum circuit amps = 28.7 amperes
overcurrent protection = 45 amperes
full load amps = 28
locked rotor amps = 156
Thank you
minimum circuit amps = 28.7 amperes
overcurrent protection = 45 amperes
full load amps = 28
locked rotor amps = 156
Thank you






RE: 3 Phase motor electrical installations
RE: 3 Phase motor electrical installations
Thank you very much. But I have one question. Why wouldn't you run a neutral also? Aren't there any components in the unit that use 120 volt?
RE: 3 Phase motor electrical installations
The NEC would require a #10 EGC for a circuit with a 40A OCPD.