CA Traveler wrote:
BFL13 Reasonable analysis for warmer temps but designs should include lower temps which raise panel power. Interesting that you didn't again bring up lens or cloud effect. I agree that it's likey a panel CB fault which can be eliminated as it serves no purpose.
For general estimating purposes I use 66% of panel power for 4+ hours. On a clear hot Phoenix sky in June I pushed my loads and got 53A from the controller with 750W panels. But I designed for for cold temps as well.
And it seems likely the OPs 2 problems are unrelated but w/o details who knows?
OP Recommend you replace both CBs with better quality ones if not eliminate the panel CB. Then see if you repro the issues.
Thanks for the info and suggestions
CA TravelerI have not seen any issue with the panel to solar controller circuit breaker (...I'm mostly using it as an on/off switch right next to my controller for ease of use).
Using your Phoenix sun at high noon in June numbers, 53amps with 750w of solar would translate roughly to 35amps if it was a 500w solar system. That's just a little above my 30amp controller's capability so if it limits the output (and basically wastes a bit of the solar panel's potential) under a mostly optimal scenario I'm okay with that. If I see "30amps" on my battery monitor flowing into my batteries sometime this summer, I'll smile knowing that I paid only $225 for my 500w system and it's generating lots of power for me :C
Realistically though....If I'm in Phoenix in June at noon, there is GONNA be some AC involved where ever I'm at which means plugged in or generator on!! When I was moving my daughter into the dorms at ASU several years ago it was a cool 114 degrees!
