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Fig. 3 Correct Use of Lifting Angle
ROLLERS
Rod or pipe rollers, with the aid of pinch bars, provide a
simple method of moving the motor control center on
one floor level, if there is no significant incline. Roll the
motor control center slowly, and steady the load to pre-
ments.
GENERAL
Freedom Series 21 00 Motor Control Centers (MCC's)
are designed for installation in accordance with both the
National Electrical Code (NEC), NFPA 70, and the Na-
tional Electrical Safety Code (NESC), ANSI C2.
Caution - If work is involved in connecting the con-
trol center with existing equipment, ensure that in-
coming power is disconnected before work is be-
gun. Disconnecting means should be locked out
and/or tagged out of service. Where it is not feasi-
ble to de-energize the system, the following precau-
tions should be taken:
A) Persons working near exposed parts that are or may
be energized should be instructed and should use
practices (including appropriate apparel, equipment,
and tools) in accordance with the NESC.
B) Persons working on exposed parts that are or may
be energized should, in addition, be qualified per-
sons who have been trained to work on energized
circuits.
INSTALLING CONTROL CENTER SECTIONS
vent tipping.
STORAGE
When a motor control center cannot be installed and
placed into operation immediately upon receipt, take
steps to prevent damage by condensation or harsh en-
vironmental conditions. If the motor control center can-
not be installed in its final location, store it in a clean,
dry, ventilated building, heated to prevent condensation,
and protected from dirt, dust, water, and mechanical
damage. When storage conditions are less than ideal,
install temporary electrical heating, typically in the form
of light bulbs, totaling 150 watts per section, hung in the
vertical wireway, or by applying power to self-contained
space heaters that the motor control center may be
equipped with. Remove all loose packing and flamma-
ble materials before energizing any of the heating ele-
Part 3
INSTALLATION
1. Before any installation work is begun, consult all
drawings furnished by Cutler-Hammer as well as all
applicable contract drawings for the installation. Give
particular attention to the physical location of units
in the control center and their relation to existing or
planned conduit, busways, etc. Provide for future
conduit entrance prior to control center installation.
2. Locate the control center in the area shown on the
building floor plans. If in a wet location or outside of
the building, protect the control center from water
entering or accumulating within the enclosure. Rec-
ommended clearances or working spaces are as fol-
lows:
a) Clearance from walls (where not rear acces-
sible) - a minimum of 1/2inch for indoor and 6
inches for outdoor or wet locations.
b) Clearance from front of MCC (working space)
minimum of 3 feet for control centers without
exposed live parts. See NEC 110-16d. NOTE:
This working space should not be used for stor-
age and should have adequate lighting.
3. Since control centers are assembled at the factory
on smooth and level surfaces to assure correct align-
ment of all parts, control centers should be securely
- Page 5 -
I.B. 8926-1
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