MLO or MCB
- Thread starter rose1981
- Start date
- Status
- Location
- Logan, Utah
Provided that the feeder conductors and the panelboard they feed are properly protected by the overcurrent protective device in the main distribution panel, a main circuit breaker is not required in the remote panelboard.
Chris
Chris
Doesnt that depend on if the Remote Panelboard is located within the same structure or not?
JAP>
jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
So what is on the other leg of the ATS? A generator?
If so, does the generator have overcurrent protection?
If so, does the generator have overcurrent protection?
- Location
- Logan, Utah
Not necessarily, I can have a remote panelboard in a separate structure and not have to have a main circuit breaker in that panel if there is a disconnecting means for the building in accordance with 225.31, 225.32 and 225.33. I could have a non-fused disconnect located at the point that the feeder enters the building or the panelboard may not have over 6 circuit breakers.
Chris
- Location
- Logan, Utah
If it is a matter of meeting the minimum NEC requirements and/or cutting cost that is one thing. But if those are not the issue opt for the small additional cost of a main breaker as it is is always logical to locate the main disco and turn off the power of the panel if there should be an urgent need to do so.
- Status