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Old 06-04-2010
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solar panel wire size (8 awg wont fit) and mounting question

I just bought two Kyocera 135sx-UPU with the junction box and a BlueSky 2512ix MPPT controller. With this set-up I should be making about 18 amps at most (perfect conditions not seen in Michigan), but the wire run will be about 30' round trip. Based on these number the Berkshire wire I ordered was 8 AWG.

Unfortunately, both the junction boxes on the panels and the screw terminals on the BlueSky controller call for 10 AWG max. Is there some way to step down the wire size to work with both items? Should I just get the 10 AWG wire and hook it up that way?

For people that installed panels like these, what size bar stock did you use to make the cross bars for the panels? I was trying to stick with aluminum because it's easily available locally and I wont have to worry about corrosion as much. The thickest I could find was 1/4" by 1" but it still seemed too flexible. Has anyone tried using angle stock and cutting back a small tab for the solar panel frame? By the way, these are getting mounted on the 1" SS davits via Emarine's 1" rail mounts.

Thank you,

Matt
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Last edited by funjohnson; 06-04-2010 at 08:54 PM.
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