advice on solar panel installation
Hi. new here and new to solar panels and could use some help. It seems to be very difficult to find conclusive information on the internet. I am going to install 36 235w panels on my house roof in 4 separate strings of 9. I am trying to figure out what wiring size I need. The panel specs say unipolar 4 mm2 and I don't know what that means. When I search for wire it's all just coming up as 12 awg and 10 awg and such. Also, what is use 2 and do I need it if I am not burying the wire? I was intending to just lay the wire in my mounting rails and come out the end of the rails, into a snorkel and down into the inverter. Also I am having a very difficult time coming up with the MC4 connectors I need. my panels use female for both the - and + and the only places I can find that sells just the female halves wants $3.50 a piece for them which seems crazy to me.
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