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That seems to be the same as my system. The controller is keyed to the sine wave of grid power. Without that the panels are not enabled. If the power goes out I don't have to shut down anything if I want to run my generator. With 20 panels on a south facing roof ( close to the 45th parallel) we feed about as much power into the grid as we use.
No batteries. Not worth the hassle.
Best
Les
__________________
Best
Les
My train of thought has been replaced by a bumper car.
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