Positioning the MCC

To mount and splice a new MCC section to an existing Model 6 section, or to join factory shipping splits, follow these steps:

1. Turn off all power supplying this equipment before working on or inside the equipment, and follow lockout/tagout procedures. Always use a properly rated voltage sensing device to confirm the power is off.

2. Remove the upper and lower horizontal wireway covers in all sections, providing access to each section’s front splicing bolts (see Motor Control Centers, View B).

   Motor Control Center Views
   View A: All Covers in Place	View B: Horizontal Wireway Covers Removed	View C: Two-piece Bus Barriers Removed (splice connection made)

3. To gain access to each section’s bus splicing provisions, slide the panels of the two-piece bus barriers (see Motor Control Centers, View C) in the sections adjacent to a splice connection (the left and right sections).

4. Make provisions for fastening the structure(s) to the floor and wall. See Securing Structures to the Floor, Seismic Certification of Model 6 MCCs, Responsibility for Mitigation of Seismic Damage, Securing Structures to Floor—Seismic Hazard Designated Locations, and Securing Structures to Wall—Seismic Hazard Designated Locations for fastener locations.

5. Supporting the MCC by its base channels and/or lifting angles, lift it into place. The front edges of the base channels must be aligned to form a continuous front in a straight line. Use a chalk line, string or other method to align the front base channels in a straight line.

6. Using the notches in the base channels, carefully move the sections in to alignment with a crowbar (see Base Channel Notches).

   NOTE: Follow all manufacturer-specified instructions and precautions when moving heavy equipment. See Handling the MCC before moving the MCC.

Base Channel Notches