12volt vs 24 volt?

Discussion in 'Start here' started by steven, May 13, 2020.

  1. Im just setting up my 4 panel 400 watt solar system wondering why I would need to wire it 24 volt ? im only going to run a computer a fan light and possibly a mini fridge in a small off grid office.
  2. TomT

    TomT WindyNation Engineer

    Didn't include if you are direct connecting or have pwn or mppt controller.
    Also what are the open voltages for the panels?
  3. After reading a few of these 12v-24v threads I plan on (when I get all 8) having 4 parallel panels in a bank of 2 in series for 24v... now each panel measures 22v open volts, so it will be 44v going into a P30L.. rated for 48v max.. is that OK ?
    Plus where can I find 2 into 1 series connectors ?
    I only see parallel.
  4. TomT

    TomT WindyNation Engineer

    All kinds of connectors on Amazon.
    The voltage will be fine.
    The open volts are the one to go with.
    Cloud cover with holes in it will drive the panels to open volts fast.
    P30L has to compensate for that.

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