Rockwell Automation 2100 CENTERLINE Motor Control Center (MCC) Units with Horizontal Operating Handl - Manual (Page 4)

4 Rockwell Automation Publication 2100-IN060D-EN-P - March 2014
CENTERLINE 2100 Motor Control Center (MCC) Units with Horizontal Operating Handles
Recommended Tools We recommend having a screwdriver available for installation.
You will need a 5/16 in. and a 3/8 in. socket wrench for installing ArcShield
units.
Ground the Unit Follow this procedure to ground the unit.
1. Determine the minimum size grounding conductor required from the
following table.
2. To ground the unit to the structure ground bus, attach a unit grounding
conductor between the unit chassis and the structure ground bus.
The size of the grounding connector is based on the unit current rating.
Install the Unit Support Pan Follow this procedure to install the support pan.
ATTENTION: If this unit is installed in a series E…J section without a vertical
plug-in ground bus, it is necessary to either install a vertical plug-in ground bus
kit, catalog number 2100H-GS1, 2100H-79U, or 2100H-79UT, or ground the unit
to the structure ground bus.
Follow NFPA 70E safety guidelines when working on energized equipment.
To avoid personal injury and damage to the unit, be certain that the unit
operating handle is in the OFF/O position before proceeding.
Grounding Connector
(minimum size #AWG) Current Ratings (A) Horsepower Rated Units (NEMA
size)
10 0…60 1, 2
8 61…100 3
6 101…200 4
4 201…300 5
3 301…400 -
IMPORTANT The unit support pans above (or wireway pan for the topmost units in a
section) and below the unit compartment must be in place before installing
the unit.
ATTENTION: All covers and doors must be in place before applying power to the
MCC. If units are removed, they must be replaced with the appropriate items
such as units, doors, and unit support pans.
ATTENTION: If power sources are connected to the motor control center, use
extreme caution when inserting units. All buses and the line sides of the
inserted units are energized, and contact with these parts can cause injury and
death.
Follow NFPA 70E safety guidelines when working on energized equipment.