I have 4-Canadian SC6P-220w Panels with the following spec's, Pmax=220W Voc =36.60V ISC =8.09A VMP =29.30V Imp =7.52A Voc-coef =0.1281V/C Noct =45.00C 15A fuse rating/series Per actual meas...
If V co-efficient is -0.36% /degree C,(like my Sharp 130w) then where that % of 22 is 0.08v, then 3v diff is 3/0.08 = 37.5 so unless I lost a decimal place somewhere, that would be 25-37.5 = -12.5C
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