UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
10-11.4.2.2 Wherever possible, junction poles, subsidiary poles, and street lighting
poles must not be used as transformer poles. When it is necessary to install
transformers on junction, subsidiary, or street lighting poles, be careful to maintain
proper climbing space and to avoid crowding of wires and equipment.
10-11.4.2.3 Install transformers only on poles strong enough to carry their weight.
Transformer poles must be straight and, where necessary, guyed to prevent leaning or
raking of the pole after the transformer is hung.
10-11.4.2.4 All crew members must stand clear and detour traffic when transformers are
raised or lowered. In congested traffic locations, the pole space must be roped off.
Personnel on the pole must place themselves on the opposite side from that on which
the transformer is being raised or lowered. Pole steps and other obstructions in the
path of ascent/descent of large transformers must be removed.
10-11.4.2.5 When transformers are installed, the pole climbing space must be protected
so that climbing workers do not come too close to transformer cases.
10-11.4.3 Pole-type transformers must not be installed until they are supplied with a
sufficient amount of the appropriate oil or fluid.
10-11.4.3.1 Phase rotation should be determined before the old bank is removed, and
before the new three-phase bank of pole-type transformers is installed, check voltage
and phase rotation as well as the nomenclature plate.
10-11.4.4 Only qualified climbers must be allowed to climb poles to inspect and test
pole-type transformers. Never stand on or otherwise contact transformer cases.
10-11.4.4.1 Disconnect all energized connections to transformers and provide a Safe
Clearance from all live circuits before changing or replenishing transformer oil
10-11.4.4.2 Do not use lighted matches or open flames of any kind when opening
transformers.
10-11.4.5 When installing fuses, workers must be careful to avoid contact with any live
lines and with other metal surfaces even if they are supposed to be grounded (i.e.,
grounded lines, the casings of grounded transformers, street lighting fixtures, signal
lines, signal equipment, the metal sheathing of cables, metal conduits, span wires, or
guy wires).
10-11.4.5.1 Before installing fuses in new cutouts, replacing fuses, or opening
disconnects, workers must wear and use the appropriate personal protective equipment
in accordance with Chapter 4.
10-31
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