Harold...

My understanding is that should the grid go down so too does the inverter.

So there is no energy on the feeder.

The DC current going to the inverter backs up and saturates -- and stops flowing.

The electronics inside the trick inverter can tell when the grid is out.

This is a specific design feature demanded by our Pocos out here to get the tax credits and the utility ( by state provision ) rebates.

As for the feeder going the other way -- like night time -- ours are sized such as to qualify easily under the 25-foot tap rule. Still they are always placed as close as possible to the Service for reasons of economy.

So it's a total non-problem where I sit.

The one thing I've noted is that the PV boys want cheap labor -- that is new to the electrical trade -- so the result is that many, many installs are raceway ugly. Too much Sealtite where a clean EMT run would do nicely.



Tesla