We are looking to get a panel listed by Ul and I have a question? When you have vfd's in your motor control cabinet you go off the input current of the drive for FLA in all calculations not the motor correct? If so is this right? Power supply @2amps,6-drives @3.2amps protected by 4amp breakers
Branch circuit conductor and OCPD( 1.25*3.2 )=4amps
Feeder for motor control panel (1.25*3.2)+(3.2*5)+2=22amps
OCPD for motor control panel 4+(3.2*5)+2=22amps round down 20amp OCPD
So FLA of the panel would be labeled 22amps?
Seems off that the motor really means nothing when using a vfd
Branch circuit conductor and OCPD( 1.25*3.2 )=4amps
Feeder for motor control panel (1.25*3.2)+(3.2*5)+2=22amps
OCPD for motor control panel 4+(3.2*5)+2=22amps round down 20amp OCPD
So FLA of the panel would be labeled 22amps?
Seems off that the motor really means nothing when using a vfd