projects only. Instead, sag and tension tables
should be provided and values indicated on the
drawings.
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[Unless otherwise indicated, conductors shall be installed in accordance
with manufacturer's approved tables of sags and tensions. ]Conductors
shall be handled with care necessary to prevent nicking, kinking, gouging,
abrasions, sharp bends, cuts, flattening, or otherwise deforming or
weakening conductor or any damage to insulation or impairing its
conductivity. Remove damaged sections of conductor and splice conductor.
Conductors shall be paid out with the free end of conductors fixed and
cable reels portable, except where terrain or obstructions make this method
unfeasible. Bend radius for any insulated conductor shall not be less than
the applicable NEMA specification recommendation. Conductors shall not be
drawn over rough or rocky ground, nor around sharp bends. When installed
by machine power, conductors shall be drawn from a mounted reel through
stringing sheaves in straight lines clear of obstructions. Initial sag and
tension shall be checked by the Contractor, in accordance with the
manufacturer's approved sag and tension charts, within an elapsed time
after installation as recommended by the manufacturer.
3.1.6.2
Connectors and Splices
Conductor splices, as installed, shall exceed ultimate rated strength of
conductor and shall be of type recommended by conductor manufacturer. No
splice shall be permitted within 3050 mm 10 feet of a support. Connectors
and splices shall be mechanically and electrically secure under tension and
shall be of the nonbolted compression type. The tensile strength of any
splice shall be not less than the rated breaking strength of the conductor.
Splice materials, sleeves, fittings, and connectors shall be noncorrosive
and shall not adversely affect conductors. Aluminum-composition conductors
shall be wire brushed and an oxide inhibitor applied before making a
compression connection. Connectors which are factory-filled with an
inhibitor are acceptable. Inhibitors and compression tools shall be of
types recommended by the connector manufacturer. Primary line apparatus
taps shall be by means of hot line clamps attached to compression type bail
clamps (stirrups). Low-voltage connectors for copper conductors shall be
of the solderless pressure type. Noninsulated connectors shall be smoothly
taped to provide a waterproof insulation equivalent to the original
insulation, when installed on insulated conductors. On overhead
connections of aluminum and copper, the aluminum shall be installed above
the copper.
3.1.6.3
Conductor-To-Insulator Attachments
Conductors shall be attached to insulators by means of clamps, shoes or tie
wires, in accordance with the type of insulator. For insulators requiring
conductor tie-wire attachments, tie-wire sizes shall be as indicated in
TABLE II.
TABLE II
TIE-WIRE REQUIREMENTS
CONDUCTOR
TIE WIRE
Copper (AWG)
Soft-Drawn Copper (AWG)
6
8
SECTION 16301N
Page 35
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