Reesh14
Electrical
- Aug 3, 2005
- 38
It is my understanding that overcurrent protection of a panelboard can be done inside of the panelboard itself(with a main circuit breaker) or a panel with main lugs only will have a disconnecting means outside of the panel (circuit breaker in the panel serving it) or a disconnect switch.
I often see a panelboard with a main circuit breaker inside of it as well as having a feed breaker from the supply panel. Is there a reason for this or special situation?
If I had an MDP serving a 100A panel, I can put a 100A main circuit breaker in the panel or a 100A breaker in the MDP to feed it, or do I have to have both?
I often see a panelboard with a main circuit breaker inside of it as well as having a feed breaker from the supply panel. Is there a reason for this or special situation?
If I had an MDP serving a 100A panel, I can put a 100A main circuit breaker in the panel or a 100A breaker in the MDP to feed it, or do I have to have both?