UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
comfort feature for the user. If the tool has not been tested, it must be
assumed to not meet OSHA requirements for use of insulated hand tools.
12-2.5.3 Unless specific permission is provided, no work will be performed on
energized electrical circuits or equipment operating at more than 50 V phase-to-phase.
Follow the safe clearance requirements of Chapter 6. If work is performed on live
energized circuits, select the appropriate personal protective equipment in accordance
with the criteria provided in Chapter 4.
12-2.5.4 The supply or line side of switches or fuses can be energized when all work to
be performed on the load side of such switches or fuses has sufficient clearance
between energized and deenergized parts so that work can be done safely.
12-2.5.5 Before starting work on deenergized circuits or equipment, verify zero voltage
on the circuit with a confirmed properly operating voltmeter
12-2.5.6 When working on or near energized circuits, workers must stand on a dry
surface.
12-2.5.7 If using fish tape near energized parts, cover live parts with rubber equipment.
12-2.5.8 If working near running machinery, use extreme care and provide barricades,
if necessary.
12-2.5.9 Place all tools clear of machinery before starting machinery. Never use a
wrench on running machinery.
12-2.5.10 Provide adequate illumination.
12-2.5.11 Wear safety goggles when soldering joints or tinning lugs on connectors.
12-2.5.12 Remove tripping hazards before starting work and do not work on slippery
surfaces.
12-2.5.13 Tape or cover bare or exposed places on one energized conductor before
exposing another energized conductor. Never leave joints or loose ends of wire
untapped or otherwise unprotected.
12-2.5.14 An open knife switch can be hazardous because of the exposure to live parts
and because of the arc formed when the switch is opened. Only use knife switches that
are enclosed in grounded metal cabinets having the control lever operable from outside
the cabinet. Install a knife switch so that the blades are deenergized when the switch is
open and oriented so that gravity will not tend to close the switch.
12-2.5.15 Provide fuses and circuit breakers in accordance with the NEC, properly sized
to protect the downstream conductors and equipment. Substitution of conductors for
12-3
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