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Teleman's avatar
Teleman
Explorer
Feb 18, 2022

Solar questions

I'm mounting three 210 watt Newpowa panels on my 30'Class A motorhome. I'm using Renogy Z brackets to mount them to my fiberglass roof. The panels are pre drilled to accept 8 of these brackets. Do you recommend 4 or 8 brackets per panel? Also I'm using the MPPT controller in my Redarc 40A DC to DC charger which has an input voltage of 9-32V. I need to run the panels in parallel to keep the voltage low enough but that means I need to use 6ga wire to run from the point of parallel conection. Do they make connectors that will fit 6ga wire? Or do I need to splice the cables? Thanks in advance.
  • Teleman's avatar
    Teleman
    Explorer
    Mar 10, 2022
    I appreciate the advice. I will get this done before our trip later this month.
  • Teleman's avatar
    Teleman
    Explorer
    Mar 11, 2022
    Btw, what kind of screws did you use to afix the brackets to the panel frames?
  • CA_Traveler's avatar
    CA_Traveler
    Explorer III
    Mar 11, 2022
    I'd recommend SS sheet metal screws with square drive. About $6/100 from Bolt Depot.

    I used SS bolts, screws and aluminum brackets. Anything with steel will start to rust at some point.
  • SJ-Chris's avatar
    SJ-Chris
    Explorer II
    Mar 12, 2022
    Teleman wrote:
    Btw, what kind of screws did you use to afix the brackets to the panel frames?


    I used VHB tape on both sides (to the roof and to the panel). To further connect to the panel, I used a long bolt (so that I could carefully reach underneath the panel and slide it into the hole I drilled in the side of the panel. Then I used a screwdriver, lock-tight liquid, and a nut. Hasn't moved in 2 years.

    In hindsight, 2 sheet metal screws would have also likely done the trick and been easier.

    -Chris

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