Outback Radian GSLC Planning Guide
Page 10
900-0222-12-00 Rev A
©2019 OutBack Power Technologies. All Rights Reserved.
Page 11
AC Wiring
WARNING: Shock Hazard
Ensure all circuit breakers or disconnect devices are turned off or disconnected before
connecting any wires.
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 is 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 input connections and the right TBB set is for a generator input. 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 the Radian Quick
Start Guide for proper torque values.
If steps are inappropriate for a given system (such as instructions for a generator when none is
present), they can be ignored.
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 L1). Connect the L2 wire from the AC load panel to red
TBB 2 (AC Out - HOt L2).
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 L1). Connect the L2 wire from the utility grid
panel to red TBB 5 (Grid in - HOt L2).
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 L1). Connect the L2 wire from the generator to red
TBB 7 (Gen in - HOt L2).
6. Connect the neutral wire from the generator (if present) to neutral
TBB 3.
NOTE: Remove the neutral-ground bond if necessary.
Single-Phase Wiring
The GSLC allows multiple terminal bus bars (TBB) for multiple AC connections. Because the Radian
inverter possesses two sets of AC input connections and one set of output connections, three terminal
bus bars are available for hot connections, as well as one neutral bus bar. The hot bus bars use brown
insulators in 230 Vac models. The neutral bus bar uses blue insulators in 230 Vac models.
The TBB on the left is generally used for the inverter’s AC output connections. The central TBB is for
utility grid input connections and the right TBB is for a generator input. The preassembled GSLC models
follow this convention.
Each TBB accepts conductors from 70 mm
2
(1/0 AWG) to 2.5 mm
2
(#14 AWG). See the Radian Quick
Start Guide for proper torque values.
If steps are inappropriate for a given system (such as instructions for a generator when none is present),
they can be ignored.
1
2
3
4
5
6
7
AC Output Grid Generator Neutral
To make external AC connections to the single-
phase GSLC:
1. Connect the hot wire from the AC load panel to brown TBB 1 (AC
Output).
2. Connect the neutral wire from the AC load panel to neutral TBB 2.
3. Connect the hot wire from the utility grid panel (if present) to brown
TBB 3 (Grid).
4. Connect the neutral wire from the utility grid panel (if present) to
neutral TBB 2.
5. Connect the hot wire from the generator (if present) to brown TBB 4
(GenerAtOr).
6. Connect the neutral wire from the generator (if present) to neutral
TBB 2.
NOTE: Remove the neutral-ground bond if necessary.
1
2
3 4
AC Output Grid Generator Neutral
WARNING: Shock Hazard
Ensure all circuit breakers or disconnect devices are turned off or disconnected before
connecting any wires.