PV Grid-tied Residential Inverter and Integrated AC/DC Disconnect
Installation and Operation Manual
41
7.3 Replacing the Inverter
1. Remove the screws and the lid on the replacement inverter.
2. Place the replacement inverter on the mounting bracket.
3. Replace the three mounting screws in the lower section of the inverter
assembly to secure the inverter to the mounting bracket.
4. Reinstall each of the fittings with their locking nuts in the knockouts
for the conductors.
Wiring the Replaced Inverter to the Disconnect
The disconnect connections are arranged in the following configuration
(refer to Figure 4-2):
• The left side is dedicated to AC
• The right side is dedicated to DC
DC Connections
To wire the DC conductors from the disconnect to the replaced inverter:
1. Route the DC conductors through the correct fitting and into the
inverter.
2. Connect the DC conductors to the DC wiring terminals inside the
inverter.
• Connect positive to positive
• Connect negative to negative
• GEC is terminated at the grounding lug
Note:
The DC conductors are reversed when running from the
disconnect to the inverter. For example, the PV+ EGC is the
left DC terminal in the disconnect but is the right terminal in
the inverter.
AC Connections
To wire the AC connections from the disconnect to the replaced inverter:
1. Route the AC conductors through the correct fitting and into the
inverter.
2. Complete the following connections by:
• Connecting the EGC conductor to the GND terminal.
• Connect the conductor coming from L2 in the disconnect to the
terminal marked Line 2 inside the inverter. (For the PVP1100 this
is the neutral conductor.)
• Connect the conductor coming from L1 to the terminal marked
Line 1 inside the inverter.
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