After 11 days of running mostly on solar PV & battery, it seems like using solar to power the A7 works pretty well.
Depending on hot water use, the charge controller (which typically shows 00 Ah) was
showing 22 Amp hours on average, per day. (With a peak of 34 Ah, & a low of 10 Ah).
Average bank voltage at 53v x 22 Ah = 1.166 kWh per day.
When the A7 was running during the day, I would
clamp measure 14.5 Amps coming out of the battery bank (in Bulk mode).
If the sun was out, the PV would be providing about 50% of the power, with the 48V bank providing the remaining 50%.
When the A7 would stop, the PV would sent all it's power directly into the bank.
Normally, the bank would near or at full charge at night.
It's clear, the back-up system (using 500w PV array)
can keep up with the A7 during the summer months.
Since there is rain and overcast days in the forecast, I'm going to discontinue this test and,
go back to spending 15 cents a day on grid power.
