12 solarpenals of 12v 80 watts when joined peralal the PWM charge controlar displays

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  • muhammad arshad
    Junior Member
    • May 2013
    • 3
    #1

    12 solarpenals of 12v 80 watts when joined peralal the PWM charge controlar displays

    Salamunalaikum May ALLAH(GOD) peace be upon you and me
    I bought 12 monosilicon penals of 12 volts 80 watts each
    I connected them with a copper wire 7/29 at the distance of 25 feet I joind them in perallel
    And from that point I connected with a Copper wire 7/64
    Then from that point I connected PWM charge controllar at a distance of 35 feet
    Problem is the charge controllar should display 27 volts and 38 amp but it displays only 25.5 v. And. 15 amp at the peak
    Not our temp is 44 celciuce
    Pls let me know where is the problem
    Tags: None
  • Sunking
    Solar Fanatic
    • Feb 2010
    • 23301
    #2
    Problem is a PWM controller is nothing more than a piece of wire, and solar panels are current sources. Have a nice day.
    MSEE, PE

    Comment

    • muhammad arshad
      Junior Member
      • May 2013
      • 3
      #3
      Originally posted by Sunking
      Problem is a PWM controller is nothing more than a piece of wire, and solar panels are current sources. Have a nice day.
      Thanks Sunking 76053 then I should buy Mppt charge controller

      Comment

      • inetdog
        Super Moderator
        • May 2012
        • 9909
        #4
        Originally posted by muhammad arshad
        Thanks Sunking 76053 then I should buy Mppt charge controller
        If you buy an MPPT CC, then you can use a combination of series wiring (up to the maximum input voltage of the CC) and parallel wiring of the panels to reduce the current in the long wires, as well as being able to get the full power output from each panel. Depending on the CC you get, you may be able to wire four sets, each made up of three panels in series, or three sets of four panels in series, or even two sets of six panels in series.
        SunnyBoy 3000 US, 18 BP Solar 175B panels.

        Comment

        • muhammad arshad
          Junior Member
          • May 2013
          • 3
          #5
          Originally posted by inetdog
          If you buy an MPPT CC, then you can use a combination of series wiring (up to the maximum input voltage of the CC) and parallel wiring of the panels to reduce the current in the long wires, as well as being able to get the full power output from each panel. Depending on the CC you get, you may be able to wire four sets, each made up of three panels in series, or three sets of four panels in series, or even two sets of six panels in series.
          THank You GOD bless You

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