Forum Discussion
Vintage465
Oct 23, 2019Nomad
CA Traveler wrote:
Voc is voltage open circuit, a panel spec. Panel parameters are temperature sensitive and you can do the calculations yourself since the temperature coefficients are also part of the panel spec.
Normally only Voc is critical as a controller may not survive exceeding it's max input voltage.
At 0F my 60 cell panel Voc is 5 volts higher, hence 15V for 3 series panels.
25C (77F) is the base and amps rise while voltage drops with increasing temps and the opposite for decreasing temps.
MS is Morningstar
Sweet! My VOC is 18.4 volts for a max of 55.2 volts if wired in Series. My Controller is good for 50v. So were not going that way until I get a new controller. Bottom line is, if I can get what I need by doing what I've done and using the existing controller in parallel but closer to the battery bank, it will stave off the immediate need for a new controller. Too many other project taking my cash right now!
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