30
I N S TA L L AT I O N , O P ER AT I O N S A N D M A I N T EN A N C E M A N UA L
Notice:
Bus compartment barrier location. When
this optional feature is provided, it will reduce the
available cable entry space by (5) inches.
Table 3 - Maximum available cable space
All dimensions are in inches.
Equipment Depth
“A” (inches)
Direction
of Cables
“B”
(inches)
54
Below
19
Above
24
60
Below
25
Above
30
67
Below
32
Above
37
74
Below
39
Above
44
—
45
Floor plan and cable
entry space (indoor
enclosure)
—
45
Outdoor equipment
Refer to Figure 46 along with the owner’s
foundation construction drawings and the
supplemental installation drawings. The outdoor
switchgear equipment is supplied with three
built-in structural support channels in the base of
the switchgear as shown in Figure 46. The front and
rear structural support channels are designed to be
clamped to the foundation.
The center channel is a structural stabilization
channel. Although the equipment can be mounted
directly on a smooth, level surface, it is
recommended that recessed steel channels be
installed to support the switchgear. The floor
channel sills under the front, center, and rear of
the switchgear base should be embedded in a level
concrete slab with their top surfaces flush with the
finished floor.
Notice:
Four (4) clamp plates (see
Figure 47) are required for each
outdoor lineup. One clamp plate
located at each corner of the
equipment.
While the equipment base center channel is not
anchored to the foundation, it is still required that
the center channel sill (see Figure 46) be level with
the foundation and also with the front and rear
channel sills to prevent structural distortion of the
switchgear equipment. Only four anchor bolts are
normally used for outdoor enclosures.
Table 4 - Outdoor equipment mounting
dimensions
All dimensions are in inches.
Depth
of indoor
switchgear “A”
Depth of
outdoor
switchgear “B”
Anchor bolt
spacing “C”
Sub base
depth “D”
60
107.62
106.00
104.62
74
121.62
120.00
118.62
DANGER
WARNING
CAUTION
NOTICE
DANGER
WARNING
CAUTION
NOTICE
