UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
10-8.5.1.2 Before changing the strains on a pole by adding wires, an engineering
evaluation must be completed to ensure that the pole can safely stand the new strain.
10-8.5.2 Clipping-In or Tying Wires. This involves the transferring of sagged
conductors from their stringing travelers to their permanent insulator positions where
they may either be clamped or tied to insulators.
10-8.5.2.1 Securely tie wires at each tie-in-type insulator to prevent the wires becoming
loose and falling to the ground. Where double arms are provided, line wires must be
well tied-in to insulators on each arm. This applies to both pin- and post-type tie-top
insulator work. Clamp-type insulators must have the clamps tightened as specified by
the manufacturer.
10-8.5.2.2 Test the phase wires with a potential transformer or other means, to make
sure that the phase wires of one circuit are being connected to the corresponding phase
wires of the other circuit when it is necessary to connect circuits at any point on the line.
10-8.5.2.3 Be sure that the phase wires are not crossed when turning the vertical angle
on three-phase lines; that is, phase wires must take the same position leaving an angle
as coming into it.
10-8.6
Secondary Line Installation. Install secondary lines to meet line clearance
requirements of the NESC. Lines can be single or triplex wires. Workers must be
particularly careful in stringing secondary services to avoid the hazards of working in
close proximity to primary lines.
10-8.6.1 Deenergize and ground nearby or adjacent energized lines before stringing
secondary wires.
10-8.6.2 Take care not to injure the weatherproof covering when handling and
stringing of weatherproof-covered wires.
10-8.7
Removing Lines. Use the same general precautions as stringing wires when
removing or salvaging wires. Where practical, the wire to be removed must be pulled
out and laid flat on the ground before any attempt is made to coil the wire by hand or on
a non-power-driven reel.
10-8.7.1 Never change the strains on a pole by removing wires until certain that the
pole can safely stand the altered strain. Where a pole will be weakened by the removal
of the wires, it must be guyed before these wires are removed. All wires must be
lowered with a handline. Use care before cutting a wire aloft to avoid contact with other
wires.
10-8.7.2 Do not allow lines which are being cut or rearranged to sag on, or be blown
against other electric power lines, signal lines, signal equipment, metal sheaths of
cables, metal pipes, ground wires, metal fixtures on poles, guy wires, or span wires.
10-27
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