Homebrewed Electricity > Controls

wire sizing

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thirteen:
5 - 24v 240w panels. The distance is about 375ft. 114.3 m.  Does the wires from the combiner box on a solar system to the controler both need to be the same size or can I have the neg side be smaller? Since I will not be running a ground wire from the solar panels to the controler panel. This cropped up in my mind. Trying to save a few bucks or jsut thinking to much. I will ground the panels right at the pole.  13

Larsmartinxt:
Both needs to be the same sizeas the same amount of current goes trough both wires

thirteen:
Yes! I thought about it after I sent it, I was letting $$ get in my way?

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