Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 40)

40 Rockwell Automation Publication 2500-IN001C-EN-P - April 2014
Chapter 3 Install Columns
Accessing the Power Bus
Follow these procedures to access the power bus.
1. To gain access to the horizontal power bus, open the vertical wireway door
to the left of the splice.
2. Identify the primary and secondary splice covers as shown.
3. Loosen the top and bottom screws on the secondary splice cover, slide the
secondary splice cover to the right, and remove the cover.
The screws remain in the wireway.
4. Loosen the top and bottom screws on the primary splice cover, slide the
primary splice cover to the left, and remove the cover.
The screws remain in the wireway.
Splicing Power Bus, 800…4000 A
Follow these procedures to splice the power bus.
1. Assemble splice bars and hardware as shown in Figure 15 on page 41 .
Repeat for each phase of busbar and, if present, the neutral bar.
2. Tighten hardware to torque specifications.
See Torque Requirements for Hardware Connections on page 43 .
Do not grease or lubricate hardware.
3. Replace the horizontal bus access covers and check that the bolts and nuts
are secure.
Primary Splice Cover
Secondary Splice Cover
Top Screw of
Primary Cover
Top Screw of
Secondary Cover
Splice Covers
Location