GE Industrial Solutions Spectra Series Power Panelboards AMCB4QD and AMCB6QD - Manual (Page 3)

5. Install the circuit breakers. Position the circuit
breakers so that the line- or ON -side terminals rest on
the straps and the opposite sides are supported by the
mounting brackets. Align the holes in each breaker
housing with the corresponding holes in the
mounting brackets. Secure the breakers to the
brackets with screws [12] and lockwashers [13] and
tighten to 35 in-lb. Attach the line-side breaker
terminals to the threaded holes in the straps with
screws [10] and conical spring washers [11]. Tighten
the screws to 50 in-lb. The straps may require minor
adjustments for proper hole alignment.
To mount TQD and THQD breakers in a four-pole,
2X double-branch assembly, secure each breaker to
the center hole in its breaker mounting bracket and
connect two of the three strap assemblies as listed in
Table 2.
6. Insulate unused strap surfaces. Apply multiple
wrappings of insulation to unused strap surfaces, as
shown in Figure 3. A UL-recognized 105° C
thermoplastic tape(OANZ2, such as Permacel P-30-
105 or 3M 66R) is required. Overlap greater than one-
half of each preceding turn, as shown, to achieve a
minimum tape thickness of 0.013 inch.
Figure 3. Insulating unused strap contact surfaces.