combiner box

larryxxx100
larryxxx100 Registered Users Posts: 1 ✭
in Solar Beginners Corner #1
We have 9 315 watt panels what size breakers should I use at the combiner box.
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  • Photowhit
    Photowhit Solar Expert Posts: 6,006 ✭✭✭✭✭
    #2
    Voltage differs, The panels should have a 'series fuse' rating.



    This is the size fuse or breaker needed for a single panel or a series/string of these panels. Usually 15 or 20 amps.

    If the information isn't on the back you can usually look up the information in the panels info sheet. often easiest to find by typing in you panel and brand  into google and add pdf something like '315 watt goodOldPanel pdf'
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Magnum MS4024, Prosine 1800(now backup) and Exeltech 1100(former backup...lol), 660 ah 24v Forklift battery(now 10 years old). Off grid for 20 years (if I include 8 months on a bicycle).
    - Assorted other systems, pieces and to many panels in the closet to not do more projects.
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