Download User Manual - Sunlight Systems Australia

Connecting the AC Wiring
WARNING: Shock hazard and equipment failure
In multiple inverter installations, it is very important to ensure each inverter is correctly
connected to its own PV array(s) and that no wires are crossed. For example, connect PV1
positive (+) and PV1 negative (–) to inverter 1 and PV2 positive (+) and PV2 negative (–)
to inverter 2.
Do not connect PV1 positive (+) and PV2 negative (–) to inverter 1 and PV2 positive (+)
and PV1 negative (–) to inverter 2. As shown in Figure 3-4, this configuration can cause
short circuit failures in the inverters and may also generate hazardous voltages within the
system.
–
+
PV Array #1
GT Inverter #1
–
+
PV Array #2
GT Inverter #2
Figure 3-4 Improper Multiple Inverter Connections
Connecting the AC Wiring
WARNING: Shock hazard
Before wiring the AC connections between the GT Inverter and the AC breaker panel,
ensure the main breaker in the breaker panel is switched OFF, and that PV power is
disconnected from the inverter. Do not reapply AC or PV power until after all wiring is
completed, as part of the commissioning procedure in Chapter 4, “Starting the Inverter”.
The GT Inverter can be connected to a single bi-directional meter, or to dual
meters, where one meter indicates power used and the second meter indicates
power sold (power supplied back to the utility). Consult the local utility to
determine the proper components to install, and obtain any permits required prior
to installation.
975-0466-01-01
3–7
This chapter for use by qualified personnel only