Outback Power Systems GS Load Center Installation Manual - Manual (Page 39)

Wiring
900-0123-01-00 Rev C 37
AC Wiring
WARNING: Shock Hazard
Ensure all circuit breakers or disconnect devices are turned off or disconnected before
wiring. Make certain the inverter and other active devices are turned off or disabled
before wiring.
Split-Phase Wiring
The GSLC can have multiple terminal bus bars for multiple AC connections. Because the Radian
inverter possesses two sets of AC input connections and one set of output connections, up to three
TBB sets are available. Each set of bus bars are paired in red and black, for the 120/240 Vac
connections required by the Radian inverter.
The TBB set on the left is generally used for the inverter’s AC output connections. The central TBB set
is for utility grid connections and the right TBB set is for a generator. The preassembled GSLC models
follow this convention.
Each TBB accepts conductors from 1/0 (70 mm
2 ) to #14 AWG (2.5 mm 2 ). See Table 2 on page 29 for
required torque values.
If steps are inappropriate for a given system (such as instructions for a generator when none is
present), they can be ignored.
Figure 33 AC Terminal Bus Bars (split-phase)
AC Output Grid Generator Neutral
To make the external AC connections to the
split-phase GSLC:
1. Connect the L1 wire from the AC load panel
to black TBB 1 (AC OUT - HOT LEG 1).
Connect the L2 wire from the AC load panel
to red TBB
2 (AC OUT - HOT LEG 2).
2. Connect the neutral wire from the AC load
panel to neutral TBB 3 .
3. Connect the L1 wire from the utility grid
panel (if present) to black TBB 4
(GRID IN - HOT LEG 1). Connect the L2 wire
from the utility grid panel to red TBB
5
(GRID IN - HOT LEG 2).
4. Connect the neutral wire from the utility
grid panel (if present) to neutral TBB 3 .
5. Connect the L1 wire from the generator
(if present) to black TBB 6 (GEN IN - HOT
LEG 1). Connect the L2 wire from the
generator to red TBB
7 (GEN IN - HOT LEG 2).
6. Connect the neutral wire from the generator
(if present) to neutral TBB 3 .
NOTE: Remove the neutral-ground bond if
necessary. See page 30.
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