GE Industrial Solutions Spectra Series Power Panelboards AMC2GM and AMC3GM - 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 AMC2GM and AMC3GM
•Circuit breaker frames SGDA, SGHA, SGLA and
SGPA
Installation
1. 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 1 and 2. Remove
the screws and the bus clip assembly. Move the bus
clip to the B phase location. Fasten the bus clip
assembly with the screws tightened to 27–32 in-lb.
2. Install the circuit breaker.
a. Main devices (lugs only on ON side of circuit
breaker). Place the OFF side of the breaker over the
stud posts, as shown in Figure 3. Secure the breaker
OFF side to the module with hex-head
screws and
Belleville washers and tighten to 90–110 in-lb.
Secure the breaker ON side to the module with
round-head screws and flat washers and tighten to
40–50 in-lb.
b. Branch devices (lugs only on OFF side of the
breaker). Place the ON side of the breaker over the
stud posts, as shown in Figure 3. Secure the breaker
ON side to the module with head-head
screws and
Belleville washers and tighten to 90–110 in-lb.
Secure the breaker OFF side to the module with
round-head screws and flat washers and tighten to
40–50 in-lb.
Figure 1. Bus clip locations on the breaker module.
Figure 2. Phase diagram showing positions of bus clips.
Figure 3. Installing the breaker on the module.
GEH5674 Installation Instructions R03
A or C Phase
Location
B Phase
Location
A or C Phase
Location
A & C Phase
As Received
A & B Phase
B & C Phase
Round-Head
Screw & Flat
Washer
Hex-Head Screw
& Belleville
Washer
Stud
Post
Latch
Latch
Screw