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  1. J

    Grid-tied solar inverter dual MPPT, is there a product offer 3 DC inputs?

    The Sunny boy sb4000-20 has stopped working, PE connection missing error
  2. J

    Grid-tied solar inverter dual MPPT, is there a product offer 3 DC inputs?

    oh, didn't see that thread -- The panels are 200w, operating voltage 36.6V, current 5.48A, open circuit voltage 45.4V, short circuit current 5.8A
  3. J

    Grid-tied solar inverter dual MPPT, is there a product offer 3 DC inputs?

    Time has come to replace my good old Sunny boy inverter which has worked hard for almost 10 years. I have 9 panels facing east wired into one string, and 10 panels facing south wired into two strings (5 panels each string). These 3 DC inputs work fine with the current Sunny boy inverter because...
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