5 Electrical Connection User Manual
figure 5-4 Aluminum Cable Connection
1. Copper to Aluminum adapter terminal 2. Flange nut 3. Aluminum cable
NOTICE
Ensure that the selected terminal can directly contact with the copper bar. If there are
any problems, contact the terminal manufacturer.
Ensure that the copper bar is not in direct contact with the aluminum wire. Otherwise,
electrochemical corrosion may occur, impairing the reliability of electrical connection.
5.5 External Protective Grounding Connection
DANGER
Electric shock!
• Make sure that the grounding cable is connected reliably. Otherwise, it may cause
electric shock.
WARNING
• Since the inverter is not equipped with a transformer, neither the negative elec
trode nor the positive electrode of the PV string can be grounded. Otherwise, the
inverter will not operate normally.
• Connect the grounding terminal to the external protective grounding point before
AC cable connection, PV string connection, and communication cable connection.
• The external protective grounding point provides a reliable ground connection. Do
not use an improper grounding conductor for grounding, Otherwise, it may cause
product damage or personal injury.
• Depending on Local Rules, please also ground the PV panel subconstruction to the
same common grounding point (PE Bar) in addition to local lightning protection
rules.
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