January 25, 20251 yr Can anyone offer some advise please. After adding 3 additional panels to my solar system the panels do not switch off completely at night. They show a voltage on each string of between 60 and 75v with 0 amps and 0w. What would cause this problem?
January 25, 20251 yr 34 minutes ago, Guy P said: Can anyone offer some advise please. After adding 3 additional panels to my solar system the panels do not switch off completely at night. They show a voltage on each string of between 60 and 75v with 0 amps and 0w. What would cause this problem? Isolate the panels from the inverter via the fuses/MCB and measure each string again on the panel side of the fues/MCBs. If the voltage is gone it means the 75V is coming from the inverter. This is common of the high voltage MPPTs used in a lot of inverters.
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