Sunedison 320w

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  • Estragon
    Estragon Registered Users Posts: 4,496 ✭✭✭✭✭
    #32
    Also, if using more than two strings in parallel, each string should have overcurrent protection IMHO.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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  • Joesouth75
    Joesouth75 Registered Users Posts: 33 ✭✭
    #33
    Hello everyone, I have been absent for a few months. I have acquired a 6th panel and plan to go with 3 pairs this spring. My question is how many parallel strings of batteries can I run? I have one string of four 6v batteries. I'd like to add more. Any comments?
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,617 admin
    #34
    You may have missed these two replies:

    #31
    #32

    Just above your last post...

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Joesouth75
    Joesouth75 Registered Users Posts: 33 ✭✭
    #35
    So probably 2 series strings paralleled together would be a good set-up? If I use more it will affect charging?
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  • Estragon
    Estragon Registered Users Posts: 4,496 ✭✭✭✭✭
    #36
    With 6 x 320w panels on a classic 200, I'd expect ~50a charging at 28v. 2 strings of GC batteries is ~450ah, so charging at a bit over C/10 (minus any loads).

    If this arithmetic is correct, you probably don't want to add much more battery unless; you're in a really sunny location, this is a weekend cabin type of application, or you can supplement with grid/generator etc charging.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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  • Joesouth75
    Joesouth75 Registered Users Posts: 33 ✭✭
    #37
    Sound's good. Thank you to all
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