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figure 5-2 Aluminum Cable Connection
1. Copper to Aluminum adapter terminal 2. Flange nut 3. Aluminum cable
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. Other-
wise, electrochemical corrosion may occur, impairing the reliability of electrical
connection.
5.5 External Protective Grounding Connection
Electric shock!
• Make sure that the grounding cable is connected reliably. Otherwise, it may
cause electric shock.
• 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 be-
fore 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 pro-
tection rules.
User Manual 5 Electrical Connection
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