3 Phase Motor Breaker Sizing | Mike Holt's Forum
Feb 20, 2020 · The branch circuit breaker trips intermittently for a 3 phase motor circuit. It is a 5 Hp, 208 V motor FLA SF I believe it is a severe duty rated motor. The branch breaker is 30 A, and the contractor has megged the wiring, changed the motor and the breaker, and the problem persists...