Given a residential roof array in Florida with Tigo TS4-A-S rapid shutdown devices, does that satisfy NEC 690.13? That is, I don't need an isolator on the exterior wall of the building for fire fighter operation, just an RSD button which shuts down the inverter and the panels.
That being said, do I still need a PV isolator between the panels and the inverter? That is, can I wire the panels (with RSD boxes) to the inverter directly? The inverter has a PV isolator switch on it which I think satisfies 690.15, right?
Even if that's legal, would it be best to run the PV through a manual isolator switch just before the inverter or is this just extra stuff I don't need? It kind of feels like the ability to manually shut off the array while working on the inverter is a good idea even if the RSD *should* make those wires "safe".
It also seems a shutdown box could include surge protectors as well.
What can I get that will isolate 3 strings and surge protect them? Something that will mount on an interior wall (not outside).
Mike C.
That being said, do I still need a PV isolator between the panels and the inverter? That is, can I wire the panels (with RSD boxes) to the inverter directly? The inverter has a PV isolator switch on it which I think satisfies 690.15, right?
Even if that's legal, would it be best to run the PV through a manual isolator switch just before the inverter or is this just extra stuff I don't need? It kind of feels like the ability to manually shut off the array while working on the inverter is a good idea even if the RSD *should* make those wires "safe".
It also seems a shutdown box could include surge protectors as well.
What can I get that will isolate 3 strings and surge protect them? Something that will mount on an interior wall (not outside).
Mike C.