Outback Radian GSLC Planning Guide

Page 8
900-0222-12-00 Rev A
©2019 OutBack Power Technologies. All Rights Reserved.
Page 9
DC Wiring
WARNING: Shock Hazard
Ensure all circuit breakers or disconnect devices are turned off or disconnected before
connecting any wires.
CAUTION: Fire Hazard
Never install extra washers or hardware between the mounting surface and the battery
cable lug. When installing multiple ring terminals or lugs, stack them on the mounting
surface so that the largest conductor is in direct contact. Smaller ring terminals should
be placed next in decreasing size order. Stacking the hardware in any other order can
result in a loss of contact area for current ow. This may allow dangerous levels of heat
to build up.
Consult the inverter Installation Manual for recommendations for cable number, sizing,
and length.
!
Battery Wiring
Battery Positive (+) Cable
Follow the instructions below when connecting battery positive (+) cables
to these models:
○ GSLC175-120/240
○ GSLC175-230
○ GSLC175-PV-120/240
Connect the positive (+) cables to the DC positive (+) wiring plate.
This plate is located directly beneath the main inverter disconnects.
It is intended for several ring lugs to be bolted to it.
○ The smaller holes have a diameter of 0.31” (8 mm).
○ The larger holes have a diameter of 0.4” (10 mm).
See the Radian Quick Start Guide for hardware installation order on the
positive (+) plate.
Follow the instructions below when connecting battery positive (+) cables
to these models:
○ GSLC175PV1-120/240
○ GSLC175PV1-230
○ GSLC-PV1-300VDC
○ GSLC-PV1-300VDC-230
Connect the positive (+) cable directly to the DC disconnect, which uses
an M8 stud.
Follow the appropriate instructions when connecting to an “empty”
GSLC which has been assembled with similar features to one of the
models above.
Wiring Block
Installing the
FLEXnet DC
The OutBack FLEXnet DC
(FN-DC), or a similar battery
monitor, may be added to
the GSLC for observing DC
current ow and providing
battery state-of-charge
information.
Hub Port
1. Assemble the FN-DC wiring as shown in the manual
for the FN-DC.
● Attach sense wires to the FN-DC wiring block and
plug it into the FN-DC.
2. Connect FN-DC wiring to the GSLC. The positive (+)
and negative (-) battery voltage sense conductors
should connect directly to the battery bank.
3. Mount the FN-DC.
When connecting sensing wires: The end of the shunt
connected to the GS-SBUS is the negative (–) battery
connection and should be wired accordingly. The
other end of the shunt is the “device” or “load” end
and should be wired accordingly.
DC Devices
In addition to inverter or PV
connections, other devices may
be connected to the GSLC,
such as DC loads or sources.
The wiring on these devices
will vary with the application.
In most cases the device will
have a separate circuit breaker
mounted on the rail. It will be
wired into the battery system
using the existing bus bars
or shunts. The number and
location of these connections
will vary with the options or
accessories installed.
PV and Charge Controller Wiring
When wiring the FLEXmax, FLEXmax 100, or another charge controller to the GSLC, many elements are
involved. These elements include the PV or RE source, the battery connections, the disconnect circuit
breaker, the PV ground fault device, and the charge controller.
These instructions are written for a PV source which uses the OutBack FLEXmax charge controller and the
GFDI. Other applications will be similar.
NOTE: In GSLC models designated as “PV”, many of the connections
below are already provided. The only connections necessary are
those for external wiring to the charge controller.
To make PV and charge controller connections:
1. Connect the PV positive wire to the GSLC’s PV positive (+) TBB.
2. Connect the PV negative wire to the charge controller’s PV negative (–) terminal.
3. Install a wire from the PV TBB to the PV disconnect circuit breaker.
4. Install a wire from the PV disconnect to the charge controller’s
PV positive (+) terminal.
5. Install a wire from the GSLC’s DC positive (+) cable plate to one pole of the GFDI.
6. Install a wire from the GFDI to the charge controller’s positive (+) battery terminal.
7. Install a wire from the charge controller’s negative (–) battery terminal to the
GSLC’s negative TBB. If the FLEXnet DC or another battery monitor is in use, this
wire should connect to the shunt which monitors that charge controller.
8. Repeat all steps for a second charge controller, if necessary.
Mounting
Screws
FLEXnet
DC
GS-SBUS
Shunt
Screw
Shunt
Screws
DC Positive
(+) Cable
Plate
(Bus Bar)
Negative (-) TBB
Shunt
Charge
Controller
○ GSLC175-PV-230
○ GSLC-PV-300VDC
○ GSLC-PV-300VDC-230