NEMA Type A (motor control centers)

NEMA Type A (motor control centers)
User field wiring connects directly to internal
device terminals in the unit and is provided only
on Class 1 Motor Control Centers.
NEMA Type B (motor control centers)
User field control wiring connects directly to the
control unit terminal block(s) in or adjacent to
each unit and user field load wiring connects
directly to the device adjacent to the vertical
wireway.
NEMA Type C (motor control centers)
User field control wiring on all units and load
wiring on Size 3 or smaller units connects
directly to master terminal blocks mounted at
the top and bottom of those vertical sections
containing control units. Control wiring on all
units and load wiring on Size 3 or smaller units
are factory wired to their mater terminal block.
User field load wiring for Size 4 or larger units
connects directly to the device terminals.