User Manual
3.4.3 Connect grid side of inverter
1. Connect the three (3) AC conductors to the three (3) AC terminals marked “L1”, “L2” and “L3”.
Neutral connection marked “N” is option connection terminal and is NOT required for inverter
operation. Refer to local code and voltage drop tables to determine the appropriate wire size
and type.
2. Connect the grounding conductor to the terminal marked “PE” (protective earth, the ground
terminal).
WARNING
An over-current protection device must be used between the inverter and
the grid.
3.4.2.1 DC connection high voltage danger notice
CAUTION
RISK OF ELECTRIC SHOCK
Do not touch an energized DC conductor. There is high voltages present when PV modules
are exposed to light causing a risk of death due to an electric shock from touching a DC
conductors!
Only connect the DC cables from the PV module to the inverter as described in this manual.
CAUTION
POTENTIAL DAMAGE TO THE INVERTER DUE TO OVERVOLTAGE
The DC input voltage of the PV modules must not exceed the maximum rating of the inverter.
(see Section 9 “Specifications”)
Check the polarity and the open-circuit voltage of the PV strings before connecting the DC
cables to the inverter.
Confirm proper string length and voltage range before connecting DC cable to the inverter.
NOTE
The AC output neutral is not bounded to the ground.
The neutral wire is not necessary for the installation.
3. Installation
24
Over-Current Protection Device (OCPD) for the AC side
To protect the inverter's AC connection line, we recommend installing a device for protection
against over-current and leakage, with the following characteristics noted in Table 3.2
(The OCPD shall comply with National Electrical Code® , ANSI/NFPA 70 or the Canadian
Electrical Code® CSA C22.1):
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