Another app would be to sense the Sanyo was using over 400w and trigger an SSR
to connect a GTI to the AC line.
By using DC from the PV as the trigger PS source, the GTI would be off-line, when:
Sun isn't out, AND when the Sanyo isn't running over 400w.
By using under 400w of PV, no power would ever be put on the grid..
Still, I wonder if that would be legal..
(The array on the left is 400w).