Rockwell Automation 2100 CENTERLINE MCC Joining Splicing Vertical Sections - Manual (Page 8)

8 CENTERLINE ® 2100 Motor Control Centers Joining and Splicing Vertical Sections
5. Slide sections together making sure cabinets are level and cabinet
spacers and holes in front flange lines-up with adjacent holes. See Figure
5.
6. Install 1/4-20 X 3/4” thread-forming screws through left hand shipping
block side plate into cabinet spacer. These can be accessed through the
top and bottom horizontal wireways. Refer to Torque Requirements on
page 15.
NOTE: Make sure cabinets are level and pushed tight together. Do not
use hardware to draw sections together.
7. Install (6) 1/4-20 X 3/4” thread-forming screws in the front flange to
secure sections together. (Screws must be installed from the left
shipping block through into the right block.) This area can be accessed
by opening the NEMA 3R/4 doors. See Figure 4. Refer to Torque
Requirements on page 15.
8. Replace the drip hood angle removed in Step 3. Make sure hardware is
placed through the drip angle and clearance hole in top plate before
threading into adjacent top plate. Refer to Torque Requirements on
page 15.
9. Install Wireway extensions. From top and bottom wireway in right hand
shipping block, insert extension through wireway opening and hook lip
on wireway opening of left hand section. Install 1/4-20 X 1/2”
thread-forming screw in wireway extension to secure to wireway
opening in right hand section. (This does not bolt into the cabinet, but is
clamped onto the wireway opening.) See Figure 5.
Splicing MCCs A main horizontal bus splice kit must be added between the horizontal bus
work of the MCCs. In addition, the neutral bus splice kit, if required, and the
ground bus splice kit must be installed to complete the splicing operation.
Refer to Splicing Procedures for instructions.
To gain access to the horizontal bus, remove the plug-in units in front of the
horizontal bus in the first vertical section of the right center.
Publication
2100-IN010D-EN-P—February 2007