Grid-connected photovoltaic inverter AC overvoltage

When the on grid inverter is detected that the grid voltage (AC voltage) exceeds the specified range, the on grid inverters must be turned off and stop working in order to ensure the safety of equi. [pdf]
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How big is the cable of the photovoltaic area combiner box

Use 4–10 mm2, 600 V insulated cables. Strip 8 mm of cable insulation. Ground the combiner box by connecting it to the inverter. Use the grounding points marked with the Open the combiner box cover. [pdf]
[FAQS about How big is the cable of the photovoltaic area combiner box]