Electriman
Senior Member
- Location
- TX
Greetings,
When we are dealing with power electronic equipment i.e. VFDs, UPSs, DC chargers, do we need to specify a circuit breaker as OCPD for output cable protection considering that these devices usually have over current protection imbedded in their control algorithms? What is the position of the NEC in this regard?
Thanks
When we are dealing with power electronic equipment i.e. VFDs, UPSs, DC chargers, do we need to specify a circuit breaker as OCPD for output cable protection considering that these devices usually have over current protection imbedded in their control algorithms? What is the position of the NEC in this regard?
Thanks