If a system incorporates a generator then it will also require a separate disconnect. For off-grid PV systems, breakers are typically used as power source disconnects as they can fulfill the role of an OCPD at the same time, although a properly sized (suitable for DC, correct voltage, correct current) traditional disconnect would work just fine. Any power source disconnect must be rated to disconnect a circuit with current flowing, therefore fuse holders or any type of connector cannot qualify as a power source disconnect as they cannot be opened under load.
+
If a system incorporates a generator then it will also require a separate disconnect. For off-grid PV systems, breakers are typically used as power source disconnects as they can fulfill the role of a disconnect and an OCPD at the same time. Any power source disconnect must be rated to disconnect a circuit with current flowing, therefore fuse holders or any type of connector cannot qualify as a power source disconnect as they cannot be opened under load.
Latest revision as of 05:55, 15 February 2021
If a system incorporates a generator then it will also require a separate disconnect. For off-grid PV systems, breakers are typically used as power source disconnects as they can fulfill the role of a disconnect and an OCPD at the same time. Any power source disconnect must be rated to disconnect a circuit with current flowing, therefore fuse holders or any type of connector cannot qualify as a power source disconnect as they cannot be opened under load.
