June 18, 20215 yr Good Day forum members, The bug has bitten again and I have decided to upgrade my 3kw infinisolar to a 5kw infinisolar. 3Kw system has performed well, I am upgrading it after 5 years of service, mostly for the higher KW output, higher charging current (25A vs 100A) and dual MPPT. I noticed in the 5kw manual it says that because the inverter is Non Isolated that the "CIGS panels must NOT be grounded" and will cause leakage current to the inverter. With my current setup, there are ground cables going from the panel frames and the solar surge protection unit into an earth/neutral bridge, the inverter ground is connected there aswell. How should I go about connecting this inverter? Specifically, where should I connect the ground coming from the panel frames and the DC surge protection? Copper rod in the ground? When the install was originally done the installer had quoted on the copper rod, but instead opted for connecting everything to the earth/neutral bridge as the area close to the panels and DB is all paved.
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