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  • Palmtree
    Junior Member
    • Jan 2019
    • 21

    #16
    Sorry. I typed may latest reply before I saw yours Butch. Thanks for the help. That's what I needed to know.

    Comment

    • Mike90250
      Moderator
      • May 2009
      • 16020

      #17
      Originally posted by Palmtree
      .....another attempt.
      Is there a difference (to the inverter) if I make the 200 ft run from the array as a single string of 23 modules (920 volts and 10 amps)
      and then just before the inverter I divide that into 2 lines (460 volts and 20 amps each) and then connect them on 2 of the 3 available inputs?
      It's the "divide" part that is the problem. The power is DC. Can't "divide" it easily.



      As opposed to making the 200 foot run with a string of 12 (480 volts, 20 amps) and a string of 11 (440 volts, 20 amps) and then connect each to on of the 3 available inputs on the inverter.
      Only way to not fry your inverter 800' of #8 wire. (or # 10 if you don't mind loss) OR you can use 800' of #6 or #4 Aluminum wire like the utility's use. proper no-ox terminations, proper torque, all set. Price out a 1,000 foot spool of aluminum

      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

      • bcroe
        Solar Fanatic
        • Jan 2012
        • 5198

        #18
        Originally posted by Mike90250
        It's the "divide" part that is the problem. The power is DC. Can't "divide" it easily.
        That is 3 people saying it can not be done. I was hoping to see his wiring diag, to be more specific. Bruce Roe

        Comment

        • ButchDeal
          Solar Fanatic
          • Apr 2014
          • 3802

          #19
          Originally posted by Palmtree
          Sorry. I typed may latest reply before I saw yours Butch. Thanks for the help. That's what I needed to know.
          The only way to combine is to put all the inverters at the array. Then you will have one run of 240v so voltage drop will be a problem but it is only one run.

          too much voltage sag and the inverters will trip out though.
          OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

          Comment

          • Palmtree
            Junior Member
            • Jan 2019
            • 21

            #20
            Originally posted by ButchDeal

            The only way to combine is to put all the inverters at the array. Then you will have one run of 240v so voltage drop will be a problem but it is only one run.

            too much voltage sag and the inverters will trip out though.
            First of all -- thanks to everyone for all the advice so far. I appreciate it.
            I plan on installing two sunny boy 7kw string inverters in the garage approximately 200 feet from 46 300w (39.7 volts and 9.35 amps each) modules ground mounted. Is there any problem with connecting 2 strings of 12 in parallel giving me approximately 476 volts and 18.7 volts to a single input on the first inverter and then connecting 2 strings of 11 in parallel giving approximately 437 volts at 18.7 amps to a single input on the second inverter?
            Also would this XHHW type wire be suitable for my application https://www.wireandcableyourway.com/...ding-wire.html ?

            Comment

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