GE Industrial Solutions Spectra Series Power Panelboards AMC6QD and AMC4QD - 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 AMC6QD and AMC4QD
•Circuit breaker frames TQD and THQD
Installation
1. Phase balancing for two-pole devices in three-phase
systems. To balance the panelboard load, remove the
screws on the appropriate bus clip, reposition the bus
clip as shown in Figure 1, then install and tighten the
screws to 27–32 in-lb.
Figure 1. Repositioning the bus clip to balance the load.
2. Prepare the module. Remove the protective caps or
insulating tape only from the tops of the stud posts to
which the circuit breaker is to be attached, as shown
in Figure 2. Fasten the filler supports, as shown in
Figure 3, with #10-32 x
3 / 4 " hex-head screws tightened
to 15–20 in-lb.
Figure 2. Removing the caps or tape from the stud posts of the
breaker module.
Figure 3. Fastening the filler supports in position.
3. Install the circuit breaker. Place the ON side of the
breaker over the stud posts, as shown in Figure 4.
Fasten the breaker to the module with
1 / 4 -20 x 3 / 4 "
screws with conical washers and #10-32 x 2 3 / 4 " screws.
After all screws are in place, tighten the 1 / 4 -20 screws
to 40–50 in-lb and the #10-32 screws to 25–30 in-lb.
For double-branch devices, repeat this procedure for
the other breaker. Any combination of TQD or
THQD circuit breakers may be used.
GEH5643 Installation Instructions R03
A & C Phase
As Received
A & B Phase
B & C Phase
Protective Cap
or Insulating
Tape
Stud Post
Filler
Support
#10-32 x 3 / 4 "
Hex-Head
Screw