6 December 2006
Including change 1, 7 December 2006
10-11.4.6 Service wires must not be installed on transformer poles, unless minimum
separation requirements can be maintained between the service wires and the
energized primary conductors or apparatus.
10-184.108.40.206 Use at least two qualified workers when installing services from a
transformer pole when primary conductors energized at 4,000 V or more are within
contact distance of the secondary wires.
10-220.127.116.11 The neutral wire must be connected first when making connections to
secondary buses followed by the phase conductors. Reverse the procedure when
10-11.4.7 Qualified personnel must perform testing of transformers, autotransformers,
and similar equipment. All temporary leads used in testing, such as secondary leads of
potential transformers, thermometer leads, and recording voltmeter leads, must be
securely supported on the pole and must clear all vehicular traffic. The positions of
these leads must not interfere with the climbing space or with other maintenance work
which may be required while the testing is in progress.
10-12.1 Conductivity. Properly maintained polypropylene synthetic rope (not natural-
fiber rope) which meets ANSI/IEEE 516 requirements must be used for aerial lines,
handlines, and tag lines for live-line work. Keep rope stored in a clean, dry location and
protected from damage and contamination. Rope lines used must be constructed
without wire reinforcement, and be at least 1/2 in (12.7 mm) in diameter.
Terminology of Rope Use.
10-12.2.1 Handlines are used to raise and lower light materials and tools. They may be
used for holding small transformers away from the pole during raising or lowering.
10-12.2.2 Throw lines are used to pull a larger rope into place for performing a task
beyond the capacity of a hand line. They are small diameter ropes designed to be
thrown over support objects such as crossarms or tree limbs.
10-12.2.3 Bull ropes are used when a handline is not strong enough to raise heavier
equipment. They are used also for fastening temporary poles, for holding out heavier
transformers, and for lowering trunks or heavy limbs in tree trimming operations.
10-12.2.4 Running lines are used for pulling several span lengths of wire at one time.
10-12.2.5 A sling is a looped rope assembly useful for many purposes: such as: to hoist
heavy equipment; for lashing tools or materials in place; for attaching a block or a
snatch block to a pole; for making temporary installations such as lashing an old pole to
a new pole; and for tying up line wires.