GE Industrial Solutions Spectra Series Power Panelboards AMC4GB and AMC6GB - Manual

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Spectra Series™ Power Panelboards
Circuit Breakers and Modules
WARNING: Danger of electrical shock or injury.
Turn OFF power ahead of the panelboard or
switchboard before working inside the
equipment or removing any component
. Do
not remove circuit protective devices or any
other component until the power is turned
OFF.
General
These instructions apply to the following catalog numbers:
•Circuit breaker modules AMC4GB and AMC6GB
•Circuit breaker frames SGDA, SGHA, SGLA and
SGPA
Installation
1. Prepare the circuit breaker(s). Before installing the
breakers, install line-end mounting screws into the ON
side of each breaker. Place the breaker vertically on a
flat surface with the ON side up and the OFF side
down, as shown in Figure 1. Install #10-32 pan-head
screws into the ON-side holes on the top of the
breaker. Install #10-32 inserts into the ON-side holes
on the bottom of the breaker. Using two screw drivers,
tighten both the insert and the screw to 20–25 in-lb.
Figure 1. Installing line-end mounting screws in the breaker.
2. Phase balancing for two-pole devices on three-phase
systems. Reposition the bus clip assembly from A or C
phase to B phase, as shown in Figures 2 and 3.
Remove the screws in the bus clip assembly and move
the bus clip to the B-phase position. Fasten the bus
clip assembly in the new location with the slotted hex-
head SEMS screws provided and tighten to 27–32 in-
lb.
Figure 2. Repositioning the bus clip assembly.
Figure 3. Phase diagram showing locations of bus clips.
GEH5673 Installation Instructions R03
#10-32
Screw
#10-32
Insert
A & C
Phase
Screws & Bus
Clip Assembly
SEMS
Screws
SEMS
Screws
Screws & Bus
Clip Assembly
B Phase
A & C Phase
As Received
A & B Phase
B & C Phase