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GE Evolution E9000 Series Installation, Operation And Maintenance Manual page 23

Motor control center
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I N S TA L L AT I O N , O P E R AT I O N S A N D M A I N T E N A N C E M A N U A L
Install plastic side barrier after power and control
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wiring in Step 4 is complete. Aluminum wire is not
Typical Type C terminal
board at the top
recommended for this product.
of a section
3. Pull the control wiring, then measure, cut, strip
and terminate it at the terminal blocks provided
22
Typical Type C
within the unit. Optionally, control terminal
terminal boards in
blocks may be pulled apart and the plastic knock-
multiple sections
outs removed to allow wiring outside the bucket.
The terminal blocks can then be placed back
through the plastic knockout openings and
reinstalled. This method allows wiring to
terminal blocks outside the confines of the
starter unit.
4. When specified, an optional ground lug is
provided in each draw-out combination starter
unit for terminating a motor frame grounding
wire. (For larger starters, the lug is mounted on
the horizontal ground bus.)
5. Use cord or plastic ties to secure all wiring. Route
the wiring to avoid interference with moving
parts and to keep it away from heat-producing
components, such as resistors and fuses.
6. Verify that the connections on all devices and
terminal blocks are tightened to their proper
torque values, as listed on the label on the
vertical wireway door.
Wiring NEMA type C motor control centers
Master terminal boards in NEMA Type C motor
control centers are provided in the larger top or
bottom horizontal wireway of each vertical section.
(Refer to the drawings for the locations of master
terminal boards.) Figure 21 and Figure 22 show
typical Type C terminal board arrangements.
These terminal boards are connected at the factory
to control terminal blocks of plug-in units in each
vertical section.
Wiring diagrams show these terminal points. These
terminal blocks are also factory wired to the T1, T2
and T3 motor-lead terminals for each NEMA size 1–2
starter unit in each vertical section. Field
connections to these control and load terminals
should be made at the master terminal boards.
Make field connections to all feeders and motor
loads for starters larger than NEMA size 2 as
described for NEMA Type B motor control centers.
Optional grounding lug can be provided in each
Plug-in unit if vertical ground bus is specified.
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