Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 39)

Rockwell Automation Publication 2500-IN001C-EN-P - April 2014 39
Install Columns Chapter 3
Splicing the Power Bus
Power bus consists of the main horizontal bus and neutral bus (if present). Based
on the current rating of the power bus, the splice kit contains the appropriate
splice bars and corresponding hardware. The following procedures describe
methods for splicing power buses based on the ampere rating of the busbars.
For additional splicing information related to specific MCCs, refer to the
elevation drawing shipped with the MCC in the documentation package.
ATTENTION: To prevent severe injury or death, de-energize all power sources to
the MCC before joining and splicing columns. Follow local codes and guidelines
in addition to the requirements of EN 50110.
IMPORTANT When splicing the horizontal power bus, always begin splicing from the lowest
phase busbar and work from the bottom up.
IMPORTANT Using NO-OX-ID – Do not get any busbar corrosion inhibitor on the bus
splicing hardware. It keeps the hardware from being properly torqued and
damage can occur.
TIP If necessary, remove units and unit support pans for the appropriate access to
splice the power bus.