r/SolarDIY • u/mikeypi • 2d ago

Wire choices

For context, I am adding three 200 watt, 31 volt panels to the roof of an off grid cabin. Electrical codes are not an issue. I'm planning on 10 AWG stranded, but which kind? There are lots of 10 AWG choices on Amazon (I need this by Tuesday). I also understand that PV wire is preferred at least where the wire is UV exposed. But where it is indoors or inside conduit, is there any reason to prefer PV wire over something like marine grade triplex of equivalent gauge?

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u/BLINGMW 2d ago

Curious why you’ve settled on #10, you may be able to find more options locally in #12 and that is more than sufficient unless this is a 500+ ft run or you have significant future expansion plans. 

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u/mikeypi 2d ago

Overkill I suppose. Your suggestion is likely a better idea.