10
R E LI AG E A R® S B
S W I TC H B OA R DS
—
08
—
08
Installation of seismically
certified switchboards
without floor sills
½-13 Threaded
rod; min. legth 1.75 inch
½-13 Sleeve anchor
set in concrete slab
½-13 Sleeve anchor
set in concrete slab
Floor sill with
½-13 pressed nut
½-13 Threaded
rod; min. legth 1.75 inch
½-13 Bolt;
min. legth 1.50 inch
½-13 Bolt;
min. legth 1.50 inch
Spacer 1 Inch long
Spacer 1 Inch long
Floor sill, top placed
even with concrete slab
Spacer 1 Inch long
½ Lock washer
½ Lock washer
½ Lock washer
½-13 Nut
½-13 Bolt;
min. legth 1.50 inch
½-13 Bolt;
min. legth 1.50inch
Conduits
When the foundation channels are being installed,
any conduits or sleeves required for power and
control cables that are to enter the equipment
from underneath should be located and installed
within the available space shown on the floor-plan
drawings. Consider installing conduits or sleeves
that might be required for future connections also.
Conduit stubs should extend above the floor
enough to prevent water from entering. Conduits
should only be installed within the marked conduit
areas of the manufacturer’s drawings in order to
comply with NEC wire bending space requirements.
Conduit sleeves should be installed only after the
switchboard is in place as they may interfere with
placement of the switchboard.
The lowest live metal part in the switchboard will
be approximately 8 inches above the bottom of the
switchboard (not including floor sills), according to
NEC Table 408.5. Conduits, including the conduit
sleeves, cannot extend more than 3 inches above
the bottom of the enclosure according to NEC
408.5. Note that the switchboard must be lifted
over any conduit stubs previously installed in
the foundation. Terminate the conduits at the
switchboard with the appropriate conduit
connectors, sized according to NEC requirements.
Conduits may require grounding or electrical
connection to the switchboard controller. Before
cabling, ensure that the markings on the cable
comply with markings on the switchboard.
—
09
—
09
Alternate installation
of seismically certified
switchboards
without floor sills
—
10
—
10
Installation of
seismically certified
switchboards
with floor sills
Seismically certified equipment
For seismically certified switchboards of IBC-2018
and IEEE-693-2018, follow the previous instructions
with the following modifications. Locate the
seismic kit shipped with each section before
installation. The kit for each section is located at
the rear of the switchboard section attached to
the horizontal bus. The kit should contain four
1-inch spacers per section. These spacers should
be installed around the four ½”-13 Grade 5 bolts as
shown in Figure 8 or Figure 9 for switchboards
without floor sills. When floor channels are used,
these spacers should be installed as shown in
Figure 10.
Floor line
Floor line
Floor line
Spacer 1 Inch long
Spacer 1 Inch long
Spacer 1 Inch long
½ Lock washer
½ Lock washer
½ Lock washer
Summary of Contents for ABB ReliaGear SB
Page 1: ...INSTALLATION OPER ATIONS AND MAINTENANCE MANUAL ReliaGear SB Switchboards ...
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Page 30: ...30 RELIAGEAR SB SWITCHBOARDS ...
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