Rockwell Automation 2100 CENTERLINE MCC Joining Splicing Vertical Sections - Manual (Page 5)

5 CENTERLINE
® 2100 Motor Control Centers Joining and Splicing Vertical Sections
Figure 3 Example of 20” Deep MCCs
20” MCC with 20” MCC with
Standard Bus Bumped Back Bus
Ground Bus
Ground Bus
(Top Option*) Top Wireway with (Top Option*)
Top Wireway with
Top Wireway
Top
Horizontal
Wireway
Cover
Top Mounted
Neutral (Optional)
Phase 1 Power Bus
Phase 2 Power Bus
B
Phase 3 Power Bus
Bottom Mounted
Neutral (Optional)
Bottom Horizontal
Wireway Cover
12 "
20 "
closing plate
A
A
A
A
A
A
Bottom Wireway
Bottom Wireway with closing plate Ground Bus
with closing plate Ground Bus (Bottom Option*)
(Bottom Option*)
A - Use a 1/4-20 hex head thread forming screw
B - Use a 1/4-20 x5/8 hex screw and secure with a
1/4-20 steel nut
Refer to Torque Requirements on page 15
12 "
20 "
closing plate Top Wireway
Phase 1 Power Bus
Phase 2 Power Bus
Phase 3 Power Bus
Bottom Mounted
Neutral (Optional)
Top Mounted
Neutral (Optional)
A
A
B
A
A
A
A
Bottom Wireway Bottom Wireway
Bottom Horizontal
Wireway Cover
Top
Horizontal
Wireway
Cover
* Ground bus is required. The ground bus can be in the bottom, top or bottom and top.
Publication
2100-IN010D-EN-P—February 2007