Eaton PRC-E Series Instruction Manual page 83

Figure 29 . Deadfront Cover Removal
The following steps describe installation of a left-side
(odd-numbered circuit breakers) BCB into the 1a or
2a panelboard. It is essential that the positioning and
orientation in the chassis be precisely as described herein.
Improper location of the BCB may cause problems when
trying to connect the circuit breaker pigtails to the BCB and
improper orientation will cause configuration difficulties.
Step 3 . BCB upper mount.
Figure 30 shows the proper installation point for the top-
most rail mounting screw. Notice the small arrow pointing
to the hole. This hole is located just below the buss support
bracket and left of the number-one circuit breaker position.
It may prove helpful to mark the hole with a piece of tape
or a marking pen.
Figure 30 . The BCB Upper Mounting Hole
Appendix A: Breaker Control Bus (BCB) installation
Take care to obey the BCB orientation shown in the above
figure; use one of the supplied screws to hold the BCB
in place loosely. The general rule is that the control box
extends into the wire gutter of the panelboard.
Step 4 . BCB lower mount.
The BCB is fastened to the "C" channel by two screws
(provided). Let the BCB hang freely down the channel to
locate the bottom-mounting hole.
Figure 31 . Locating the BCB Lower Mounting Hole
N otee: There may not be a hole for the bottom mounting
screw. If the hole is present then it should be in the
vicinity of the small arrow shown in Figure 31. If
the hole is not present, it may be necessary to use
the BCB as a guide to locate the hole. This can be
accomplished by loosely screwing the BCB into the
top hole and then using the BCB mounting to locate
the hole. It may be easier to apply masking tape to
the chassis to make your mark more visible. Once
the location is determined, remove the BCB from the
panelboard and drill the hole using a #29 drill bit and
install as scripted
Step 5 . Finishing up.
To complete the mechanical fastening of the BCB to the
Pow-R-Line panelboard, make sure all circuit breaker pigtails
are clear from any pinching or jamming. Tighten the top
and bottom mounting screws. Finally, verify that any branch
circuit wiring is clear of the newly installed component.
PRC-E Series Instruction Manual MN014003EN August 2015 www.eaton.com
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