Wire size?

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  • nova
    Member
    • Feb 2013
    • 61
    #1

    Wire size?

    I have three 260W panels the wire in them is 12AWG I want to join them on deck of my boat in combiner box, then to CC an outback 60 is the one I have in mind.
    the distance to the 12 V battery bank with 6 6v GC T105 RE is about 30', I can put the CC about 15' or midway.
    THinking #8 to the CC, then not sure wire gauge from CC to batt bank #6 (6% drop) or #4 (4% drop) according to http://www.powerstream.com/Wire_Size.htm

    Your opinions
    Last edited by nova; 10-22-2019, 07:46 PM.
    Tags: None
    • Mike90250
      Moderator
      • May 2009
      • 16020
      #2
      You can have up to 65 A coming out of the charge controller, so you want it close to the batteries to minimize the losses in the expensive heavy wire you use. Check to see what the max gauge wire the controller can handle. #4 is pretty large and tough to work with
      Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
      || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
      || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

      solar: http://tinyurl.com/LMR-Solar
      gen: http://tinyurl.com/LMR-Lister

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        • nova
          Member
          • Feb 2013
          • 61
          #3
          What do you think from the panels to the CC #8 or #10?
          Last edited by nova; 10-23-2019, 03:32 AM.

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