Installation
42
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Service Equipment Preparation (If Required)
Neutral-Ground Bonding Busbar Connection
If not needed as a service equipment, this step may be skipped.
A proper earth connection and N-GND Bonding busbar connection are required for safe operation of
the system and for compliance with local code requirements.
If the system is installed as service equipment, connect the Neutral and Ground terminals on the SE
Box using the provided N-GND bonding busbar (Cross-sectional area: 45 mm
2
).
a
Remove the two nuts positioned in the figure.
b
Assemble N-GND bonding busbar on Neutral and Ground terminals and fasten the two
nuts.
10 mm hex
75 kgf·cm (65 lbf·in)
torque
To ensure the safe operation in backup mode, a local earth connection must be present on the
site such as an earth rod or ground electrode. Connection of the earth rod must comply with
local regulations.
WARNING
