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  • Wire size for turbine

    I'm hooking up my 300w turbine to my 520ah battery bank in my solar powered camping trailer. I want that turbine to contribute to keeping those batteries charged, and for when there's overcast weather etc. Problem is the turbine is around 25m away from the batteries.

    What size wiring would I need for the positive and negative wires to run DC power over that distance to the regulator next to the batteries?

    The power will run uphill a little too, if that makes any difference.

  • #2
    Originally posted by Aussie Bob View Post
    The power will run uphill a little too, if that makes any difference.
    Arrgh ! Panels have to be above the batteries, for proper electron flow , so I suspect wind might have the same requirement, and that's why they ask for tall towers
    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

    Comment


    • #3
      Use 6mm2 wires should be ok!

      But this is not a good solution.

      Comment


      • #4
        Originally posted by Mike90250 View Post
        Arrgh ! Panels have to be above the batteries, for proper electron flow
        Ya kidding right?

        The turbine is in the back corner of the yard, behind the house where we get great winds up the valley. I park my camping trailer up in the front of the yard, but the top of the turbine is higher than the batteries, only just.

        Comment


        • #5
          Originally posted by Aussie Bob View Post
          Ya kidding right?
          Right. I thought you knew all this.
          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

          Comment


          • #6
            hehe, I was just playing around.

            Comment


            • #7
              here's a link to a wire size calculator (a spreadsheet, excel or openoffice) that will work for you,
              http://www.uwgb.edu/nevermab/voltage...alculator_.xls
              some cells are locked, some are slaved to another cell, you may have to hunt around the spreadsheet a bit to find the inputs.

              Mike
              Last edited by Mike90250; 07-12-2009, 07:27 PM.
              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

              Comment

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