What gauge wire?
I'm going to be adding a second solar panel and need to know what gauge wire I need for 2/140w panels on a 35' run. Thanks Keith
Forum Discussion
You don't understand all the ramifications of lower voltage in a pwm system. We've had this discussion before. I had shown voltage is also important for pwm charging.
pianotuna wrote:
Hi Salvo,
You know that pwm doesn't control voltage so the top 2.6 volts on a 17 volt panel don't matter a hoot, assuming a 14.4 charging voltage. #10 wire is good for 30 amps. 280 watts/12.8 volts =~22 amps max.
