Outback Power Systems GS Load Center Installation Manual - Manual (Page 32)

Installation
30 900-0123-01-00 Rev C
Bonding
All GSLC models are equipped with a mechanical bond between AC neutral and ground.
All models that do not include the GFDI are also equipped with a mechanical bond between DC
negative and ground. These can be useful in stand-alone systems where no other bond is provided.
If other bonds are present, or if the GFDI is installed later, the GSLC bonds need to be removed.
WARNING: Shock Hazard
If the GFDI is manually installed (see page 24 and the GFDI manual), the negative-ground
bond on the GSLC must be removed. This must also be done if any other PV ground-fault
device is present that establishes its own negative-ground bond. GSLC models purchased
with the OutBack GFDI do not have a bond between negative and ground.
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Figure 27 Removing Bonding Connections
The GSLC’s neutral bus bar is located in
the lower right portion of the GSLC.
The neutral-ground bond is established
at one end of the bar, near the base of
the GSLC.
To remove either of the bond connections:
1. Using a Phillips screwdriver, remove the screw
shown above.
2. Remove the metal standoff beneath the bus
bar. The screw and bus bar provide the
mechanical bond to the chassis ground.
3. Rotate the TBB mount. Insert the bus bar into
the open end of the TBB mount so that the TBB
mount supports the bus bar. It may be
necessary to loosen the TBB mount screw
before rotating it.
4. Retighten the screw to secure the TBB mount.
The GSLC’s negative (–) bus bar is located
near the top of the GSLC. It is attached to
the inverter negative (–) bus and its shunt.
NOTES:
 If the TBB is connected directly to
the enclosure by a screw, then the
bond is connected.
If the TBB is held by the TBB mount
and the TBB mount is secured to the
enclosure, the bond is disconnected.
 The installed Neutral TBB has white
insulators. A second Neutral TBB with
blue insulators is included in the kit
for locations where blue is standard.
Screw
TBB
Mount
TBB
Mount
Neutral-Ground Bond Negative-Ground Bond
Bottom of GSLC
Standoff
Standoff
Inverter
Negative (–)
Bus Bar Top of GSLC
Screw