34
4 . eq u I p m eN T I N s Ta L L aT I o N
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
—
Fig. 4.4
Outdoor walk-in
enclosure anchor
locations
Outdoor equipment
Refer to Fig. 4.4 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 Fig. 4.4. 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 switch-gear. 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.
Note: Four (4) clamp plates 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 Fig. 4.4) 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.
—
Plan view at level "A"
