My off-grid system has two outback charge controllers and both have ground fault protection devices (GFPD). These GFPD consist of a 1/2 amp circuit breaker ganged to a 63 amp breaker. If ground fault current trips the 1/2 amp breaker, then the 63 amp breaker will open the PV positive circuit between the combiner and the charge controller.
Because I have two GFPD, each with its own 1/2 amp breaker, it could take a full amp of ground fault current before the breakers trip. More charge controllers with GFPD would require even higher currents. My question is: How many charge controllers with GFPD can I have on one system?
--vtMaps
Because I have two GFPD, each with its own 1/2 amp breaker, it could take a full amp of ground fault current before the breakers trip. More charge controllers with GFPD would require even higher currents. My question is: How many charge controllers with GFPD can I have on one system?
--vtMaps
