I was going to design my solar system to have a dual pole breaker between the pv array and the mppt, for extra safety.
The following statement on the Victron mppt manual made me doubt on whether using a dual breaker is a good idea or not:
A switch, circuit breaker, or other device, either AC or DC, shall not be installed in a grounded conductor if operation of that switch, circuit breaker, or other device leaves the grounded conductor in an un-grounded state while the system remains energized.
I'm just not sure what energized means here, given that the pv array is technically a charge source. Would a single pole breaker be a more appropriate choice on a grounded DC system?