Flipping the inverter breaker off reads consumption coming from utility....You just need to figure out a way to determine whether the Power is coming or going.
That's easy, a simple current transformer over each incoming live wire (not over the live-neutral pair) and one over the solar feed from the inverter. The inverter takes almost nothing in so generally reads outgoing... works for mine... when the sun comes out you can see the incoming current drop as the solar takes over. I have one on the solar, one on the line and one on the feed to the consumer unit (breaker panel) after the junction of solar and utility line, so I can see current in all three legs and therefore deduce which is going which way..."" Perhaps the sum of two inexpensive 'hook' ammeters readings times the voltage will tell the power ? ""
There ya go.
Now You just need to figure out a way to determine whether the Power is coming or going.
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by Aaron Carman
by Aaron Carman
by Aaron Carman
by Jake Hertz