Solar Wire Size..??? Fuses on panels...??
Ok, ready to install my solar system and I need to buy wire to go from panels to the solar controller Two, 140W panels, wired in parallel Here are the specs on the panel: The wire lengt...
Forum Discussion
30C hotter, NOTC for a 140w is 45C @ 20C and that is 800 w/m^2 20C, back open to slight breeze.
Note Vmp NOTC is 16v.
So the coefficient for Vmp is -.5%/C, 30C * -.5%/C = -15%
18Vmp * (1-.15) = 15.3v
so another .5v loss is 14.8v to stay on the left of Vmp.
Do ya just ignore Vmp dropping due to cell temp, the current drops fast on the right side of Vmp.
Note Vmp NOTC is 16v.
So the coefficient for Vmp is -.5%/C, 30C * -.5%/C = -15%
18Vmp * (1-.15) = 15.3v
so another .5v loss is 14.8v to stay on the left of Vmp.
Do ya just ignore Vmp dropping due to cell temp, the current drops fast on the right side of Vmp.
