How many of these panels can I wire into this charge controller?

softdown
softdown Solar Expert Posts: 3,891 ✭✭✭✭
in Off Grid Solar & Battery Systems #1


The 520 watt panels. Open circuit voltage 46.3. Max power current: 10.5

Hoping for two panels - laying flat on flat roof in cold climate. At 37 degree latitude. 

Reason for adding more panels: Need more power during hot summer months for refrigeration and freezers. 

Thinking four panels since I can get unused 520 watt panels for about $200/each.
First Bank:16 180 watt Grape Solar with  FM80 controller and 3648 Inverter....Fullriver 8D AGM solar batteries. Second Bank/MacGyver Special: 10 165(?) watt BP Solar with Renogy MPPT 40A controller/ and Xantrex C-35 PWM controller/ and Morningstar PWM controller...Cotek 24V PSW inverter....forklift and diesel locomotive batteries
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  • softdown
    softdown Solar Expert Posts: 3,891 ✭✭✭✭
    #2
    Heliene panels. I never heard of them but that means almost nothing. They are BIG - 520 watts.
    First Bank:16 180 watt Grape Solar with  FM80 controller and 3648 Inverter....Fullriver 8D AGM solar batteries. Second Bank/MacGyver Special: 10 165(?) watt BP Solar with Renogy MPPT 40A controller/ and Xantrex C-35 PWM controller/ and Morningstar PWM controller...Cotek 24V PSW inverter....forklift and diesel locomotive batteries
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  • softdown
    softdown Solar Expert Posts: 3,891 ✭✭✭✭
    #3
    Plan is to simply lay the panels on this flat roof. Protected - to a degree. Easily have room for four XL panels.


    First Bank:16 180 watt Grape Solar with  FM80 controller and 3648 Inverter....Fullriver 8D AGM solar batteries. Second Bank/MacGyver Special: 10 165(?) watt BP Solar with Renogy MPPT 40A controller/ and Xantrex C-35 PWM controller/ and Morningstar PWM controller...Cotek 24V PSW inverter....forklift and diesel locomotive batteries
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  • softdown
    softdown Solar Expert Posts: 3,891 ✭✭✭✭
    #4
    Great experience with Outback FM80s. But overkill for a few auxiliary panels.
    First Bank:16 180 watt Grape Solar with  FM80 controller and 3648 Inverter....Fullriver 8D AGM solar batteries. Second Bank/MacGyver Special: 10 165(?) watt BP Solar with Renogy MPPT 40A controller/ and Xantrex C-35 PWM controller/ and Morningstar PWM controller...Cotek 24V PSW inverter....forklift and diesel locomotive batteries
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