4 100 watt panels in series with a 40 amp MPPT charge controller?

Discussion in 'General Questions' started by Bob B, Feb 11, 2018.

  1. I have a 40 amp MPPT solar charge controller capable of accepting 150 volt input. Because my solar panels would be mounted 70 feet from the controller I'd like to connect the 4 windy nation 100 watt panels in series and use 10 awg wire to go from the panels to the controller.

    Can these 4 panels be wired in series?
    Is 10 guage wire good for the 70 ft. distance?
  2. TomT

    TomT WindyNation Engineer

    Yes they can be wired in series.
    With 10 gauge wire you will have just 1.14% drop.
    Which is considered to be good.

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