I’m upgrading my off grid solar system. I will have 3 separate arrays of 1080 watts each. One on the roof of the cabin angled east for the AM sun and two 60 ft away. (One set for southern exposure and the other for western exposure.) What size wire should be used for the 60’ run? But, more importantly, can I combine these two arrays and then run the 60 ft with just 2 wires instead of four? Once at the cabin I would put them in a combiner box with the roof array. Thanks for your thoughts.