Solar Panel Wiring
Is regular automotive primary wire suitable for use between a solar panel and the charge controller? I am installing two, 100-watt poly panels on the roof of my 5er, running the wires down a holding t...
Forum Discussion
With PWM you get the Isc of the panels. So your two together can do 12.26 amps aimed at a high sun. You should allow some margin for panels when they are cold doing more than their rated amps, rated at 25C/77F
Flat panels don't get as much light as aimed panels, so do less than rated amps. A 15 amp controller should give you enough margin, but a 20 would be better for more margin.
From panels to controller should be #8 as stated above. However since you hardly ever do any off-grid, it is not worth the extra money if that is a consideration over #10.
In fact for that much off-grid you just need an extra battery for that trip, and no solar at all.
Flat panels don't get as much light as aimed panels, so do less than rated amps. A 15 amp controller should give you enough margin, but a 20 would be better for more margin.
From panels to controller should be #8 as stated above. However since you hardly ever do any off-grid, it is not worth the extra money if that is a consideration over #10.
In fact for that much off-grid you just need an extra battery for that trip, and no solar at all.
