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Coduit Hangers and Supports | Up
Construction Electrician Intermediate - Electricity handbook for electricians | Next
Splices |
hangers suspended from ceilings, roof structures, or
similar members.
Another excellent application for the U-channel is in
suspended ceilings that contain lift-out ceiling panels. In
modem construction, these lift-out panels provide ready
access to mechanical and electrical equipment within the
suspended-ceiling area. Accordingly, it is important that
conduits installed in such an area do not prevent the
removal of panels or access to the area. Rod-suspended
U-channels provide the solution to conduit wiring in such
areas.
Sections of the U-channel and associated fittings
are available in aluminum or steel types. Another type
of material that can be used for supports is slotted-
angle-steel units. Numerous prepunched slots allow
installers to bolt on rods, straps, and similar material
without drilling holes. Slotted steel has unlimited
applications in forming special structures, racks,
braces. or similar items.
A cable-pulling kit (80149) has everything needed
for any wire or cable-pulling job. Most large Public
Works and all battalions have the wire installation kit.
The heavy-duty power wire/cable puller plugs into any
convenient 115-volt source. It pulls 15 feet of cable per
minute and can be used with various attachments for
almost any type of pulling job.
After a “fish” line has been blown or run through
the conduit, a rope that is provided with the power
cable puller can be pulled through the conduit. This
rope. used with a cable grip, makes the actual pull. The
power cable puller can be used in almost any
configuration. Figures 5-22 through 5-27 are examples
of the different setups.
SOLDERING AND SPLICING
PROCEDURES
As a CE project supervisor or crew leader, you
need to train your crew on the proper solderless
connector splices, soldering splices, and taping
splices. You will need to spot-check the connections to
ensure proper installation.
SOLDERLESS CONNECTORS
Solderless connectors (wire nuts) have almost
completely eliminated soldering and taping for certain
types of splices. They are designated to hold several
electrical wires firmly together and provide an
Figure 5-22.—Pipe adapter to exposed conduit.
Figure 5-23.—Power unit to the power adapter.
insulating cover for the wires. They are available in
several sizes. The size of the solderless connector is
determined by the number and the size of the wires to
be joined.
5-20
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