Electroysis and PV mounting hardware

System
System Posts: 2,511 admin
in Advanced Solar Electric Technical Forum #1
I'm doing a ground install, using galvanized pipe (similar to GroundTrac system), with galvanized steel channel struts. The panels will be bolted directly to the struts. Panels are anodized aluminum coated. Does anyone know if there are any electrolysis issues with bolting anodized aluminum panels to galvanized steel? It's a dry climate here, so moisture will be infrequent.
Thanks,
Greg
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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    #2
    Re: Electroysis and PV mounting hardware

    use stainless for the panel to rack hardware, the coating on the frames will protect the panels and last for decades
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  • System2
    System2 Posts: 6,290 admin
    #3
    Re: Electroysis and PV mounting hardware

    Hey, Solar guppy:
    Are you saying to use stainless steel bolts?
    The plan, so far, is to bolt the galv. struts directly to the back of the panels, using the slots in the struts to go through to the tapped holes already on the panel frames. This would put the steel struts in direct contact with anodized aluminum coating on the panels. Are you saying the anodized coating on the panels prevents electroysis with the galv steel struts?
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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    #4
    Re: Electroysis and PV mounting hardware

    The Strut to panel hardware should be stainless

    Yes the coating protects the frames
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