arc_flashed
Member
- Location
- FL, United States
Hoping someone can help clear up a bit of confusion.
I have a motor/vfd panel that has (2) 125HP VFDs and a small AC load. Per NEC 430.24 I've calculated my feeder conductor ampacity as 354 amps.
Does this value require that my upstream feeder breaker be sized at a minimum of 354 amps? I know the cable must be at least capable of carrying this ampacity but I am having a hard time finding the section that would determine if I need to have a 400amp breaker or if a 350amp would be acceptable by code.
I have a motor/vfd panel that has (2) 125HP VFDs and a small AC load. Per NEC 430.24 I've calculated my feeder conductor ampacity as 354 amps.
Does this value require that my upstream feeder breaker be sized at a minimum of 354 amps? I know the cable must be at least capable of carrying this ampacity but I am having a hard time finding the section that would determine if I need to have a 400amp breaker or if a 350amp would be acceptable by code.