The residual current monitoring unit (RCMU) is integrated into the inverter to avoid the
residual current exceeds the limit. The inverter will disconnect the utility grid quickly once it
found the residual current exceeds the limit.
When wiring, ensure that the AC cable is completely matched with the "BACKUP", "ON-GRID",
"GEN", and grounding ports of the AC terminal. Incorrect cable connection will lead to
equipment damage.
Ensure that the whole cable cores are inserted into the terminal holes. No part of the cable
core can be exposed.
Ensure that the insulation board is inserted into the AC terminal tightly.
Ensure that the cables are connected securely. Otherwise it will cause damage to the inverter
due to overheat during its operation.
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