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R E L I A G E A R ® S B S W I TC H B O A R D S
12
Installation: Multiple
switchboard sections
—
Joining section frames
11
The joining of the sections involves two bolted
Top and bottom bolted
connection, two
connections each on the top and bottom depth
connections on each
frame members (Figure 11). In addition, two bolted
depth frame member
connections are made on each vertical frame
—
12
member (Figure 12).
Vertical bolted
connection, two
connections on each
The vertical connections are located one-third and
height frame member
two-thirds up from the bottom of the switchboard.
—
For a 90-inch switchboard, the connections are
13
made 30 inches and 60 inches from the ground
Locations of the eight
bolted joints used to
(Figure 13).
connect two sections
—
11
—
12
Section 1
—
13
Straight splices
Section 2
The following splicing instructions apply to
individually mounted main/feeder, utility or
incoming lug pull sections to individually mounted
main/feeder, utility or incoming lug pull sections,
as well as to individually mounted main/feeder,
utility, or incoming lug pull sections to group-
mounted distribution sections. Be sure to align
the sections according to the drawings provided
by the supplier for the specific installation.
To connect straight splices, first remove the single
½"-13 Grade 5 bolt and washers from the left
connection, shown in Figure 14a. Keep in mind the
other two bolts may have to be loosened. Rotate
each phase splice counterclockwise as shown in
Figure 14b, starting with the rear-most splice
working forward. With all splices for one phase
in position, as shown in Figure 15a, reinsert the
½"-13 Grade 5 bolt and washers on each phase
and torque all bolts according to Table 1 in Torque
Specifications. See Figures 16 through 20 for
additional information based on bus ampacity.
Section 1
Section 2
60"
30"
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