Forum Discussion
Almot
Jul 11, 2013Explorer III
smkettner wrote:
#10 wire, 8 amps, 48 volts, 30' (each way) will net about 1% drop.
Is the 8amps the Isc or Imp rating?
Why bother with more wire? If the panels have MC4 connectors even better.
Isc=8.68
Imp=8.12
Vmp=30.2
Calculators - if one can trust them :) for 8.68A, 60.4V, 2*25ft, show #8 AWG at 1% drop.
Yes, there are MC4 and I will use one on each panel to connect 2 panels in series. But the "out" +/- leads will have to be spliced to some wire beefier than #10. Sorry for hijacking my own topic - inevitable thing with solar.
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