Section 4—Installation
Power-Style™ QED-2 Switchboards
31
© 1988–2018 Schneider Electric All Rights Reserved
80043-055-13
ENGLISH
5. Line up the holes in the bus bar flanges, and reinstall the 1/2-in. (13 mm)
hardware that was removed in step 1 on page 30 and as shown in Figure 24.
6. Torque the bolts inserted in step 5 as indicated in “Section 9—
Torque Values for Electrical Connections” on page 51.
7. Assemble the busway collar to the switchboard enclosure with the
screws provided.
8. Ensure that the busway integral ground is connected to the switchboard
ground bus.
9. Confirm busway phasing before energizing.
Conduit Area
1. Locate and terminate all conduit in the switchboard enclosure in the “available
conduit area” designated on the equipment drawing.
NOTE:
On switchboards greater than 24 in. (610 mm) deep, the center
base channel can be removed for additional conduit area.
Exception:
Do not remove any base channels when seismic restraint is required.
2. Install the conduit properly. Use hubs, locknuts, and bushings to protect the
cables and prevent condensation on the conduit from entering the switchboard.
NOTE:
If top entry, do not use the top of the switchboard to support the
weight of the conduit. Support the conduit independently. When conduit is
installed, make sure no areas of the roof are bowed downward. This will
help prevent pooling of water.
If bottom closure plates are furnished, the customer must remove the plates,
make holes in them for any conduit entering the bottom of the switchboard, and
then reinstall the plates.
Under seismic conditions, consider using top restraints if movement of the top
of the switchboard is an issue.
3. Bond all conduit hubs to the switchboard enclosure with approved
electrical connections.
Figure 24 – Reinstalling the 1/2-In. (13 mm) Hardware
NOTE:
The convex side (marked “Top”) of one
conical washer should be against the bolt
head, and the convex side of the second
conical washer should be against the hex nut.
Washer—marked “Top”
Hex nut
Bolt head
Washer—marked “Top”
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