Installing pv and ac circuit breakers and gfdi, Installation – Outback Power Systems GS Load Center Installation Manual User Manual
Page 26

Installation
24
Installing PV and AC Circuit Breakers and GFDI
Figure 22
Circuit Breakers
To mount circuit breakers:
1. It may be necessary to remove the knockout
from the location where the circuit breaker is
to be placed to make room for the circuit
breaker to be installed. Be sure to remove 
any debris that may occur from removing the 
knockout.
2. Place each circuit breaker behind the
premounted rail. Center the device so that
the raised area around the switch protrudes
through the bracket. It may be necessary to
hold the device in place by hand.
2. When the circuit breaker is in place, insert the
screws included with each breaker through
the holes in the mounting rail.
3. Tighten the screws until secure, but do not
over-tighten.
NOTES
Although there are no specific designations, the upper end of the mounting rail is generally used for AC 
devices (including the maintenance bypass). The lower end is generally used for DC devices, including the 
GFDI. The preassembled GSLC models follow this convention. 
A PV ground-fault device may be required. The OutBack GFDI is pre-installed on some models. With other 
models it can be purchased separately for manual installation. (See page 17.) The GFDI mounts the same 
way as other circuit breakers. Once mounted, see page 34 and the GFDI manual for wiring instructions. 
(Note that the GFCI usually requires multiple rail slots.) 
Some installations may require an AC maintenance bypass. This is referred to as the Input-Output Bypass 
or IOB. The bypass comes prewired for a single Radian inverter in some GSLC versions. It can also be 
purchased separately. See page 37 and the GS-IOB manual for mounting and wiring instructions. 
