Remote Array Disconnect

[Ken_S]

Given the following.

Micro inverter system
The bulk of the system is located on the house, however one array is located on a remote building on the property which feeds back to the combiner at the house.

Combiner and pv system disconnect are located at the front right of the house. Remote building is located at the left rear of the property. The circuit from the remote building will enter the rear of the home and then NM cable will be run to the combiner panel. Is a disconnect required where the circuit from the remote building enters the house? 225.31 seems to indicate that a disconnect is required.

 

[jaggedben]

In my opinion no, since the circuit is energized from the house. A disconnect for the circuit should be required at the remote building, instead.

That is, unless these are Enphase IQ8 series in a backup system with System Controller. That would complicate my answer, and I'd probably say there should be a disconnect in both places.

Inspectors who don't understand grid-tied inverters might not agree with me.

 

[Ken_S]

In my opinion no, since the circuit is energized from the house. A disconnect for the circuit should be required at the remote building, instead.

That is, unless these are Enphase IQ8 series in a backup system with System Controller. That would complicate my answer, and I'd probably say there should be a disconnect in both places.

Inspectors who don't understand grid-tied inverters might not agree with me.

Thanks this makes sense.
They are IQ8 units, however there is no backup system.
In complying with 225.31 the disconnect then should be located at the point where the circuit enters the remote building, correct?

 

[jaggedben]

Thanks this makes sense.
They are IQ8 units, however there is no backup system.
In complying with 225.31 the disconnect then should be located at the point where the circuit enters the remote building, correct?

Yes.