TheElectrician
Senior Member
- Location
- New York, NY, USA
Hey Guys, I wanted to have a discussion on the Alternating Current Disconnect Requirements for PV systems. This is the disconnect between the Inverter output and Load Center. I hear people telling me that it needs to be fused and some tell me it need not be. I think, since there is already a breaker OCPD for each inverter in the load center, it is not necessary for this disconnect to have fuse in it as it just serves the purpose of disconnecting the supply from the inverter for emergency/maintenance. According to 690, it says "The PV system disconnecting means shall be an externally operable general-use switch or circuit breaker, or other approved means." Does this mean either is fine? Let me know your thoughts