Solar shut off

[GotSmart]

Open circuit voltage on each of those 250w panels is 37.6v and working is only 30.3v. I would not run all four in series but 2 and 2 would be fine.

All four in parallel is 33 amps and 30.3 volts.

2 and 2 is 17 amps and 61 volts

All four in series is 8.27 amps at 122 volts. Unfortunately the Voc at this point exceeds the controller without even considering cold temps or cloud effects that can push it even higher.

I had planned for everything being parallel. 

On Amazon they have a WOHHOM brand WA40A breaker. One on each line in to give extra safety.  $14 each. They are rated for 12 volts. 

 I do have one of the battery type switches available.