Definitions Applicable to 29 CFR Subpart V cont'd

DOE-HDBK-1092-2004

Hotline tools and ropes--The term means those tools and ropes which are especially designed

for work on energized high voltage lines and equipment. Insulated aerial equipment especially

designed for work on energized high voltage lines and equipment shall be considered hot line.

Insulated--The term means separated from other conducting surfaces by a dielectric substance

(including air space) offering a high resistance to the passage of current.

NOTE: When any object is said to be insulated, it is understood to be insulated in suitable

manner for the conditions to which it is subjected. Otherwise, it is within the purpose of this

subpart, uninsulated. Insulating covering of conductors is one means of making the

conductor insulated.

Insulation (as applied to cable)--The term means that which is relied upon to insulate the

conductor from other conductors or conducting parts or from ground.

Insulation, shielding--The term means an envelope which encloses the insulation of a cable

and provides an equipotential surface in contact with cable insulation.

Isolated--The term means an object that is not readily accessible to persons unless special

means of access are used.

Manhole--The term means a subsurface enclosure which personnel may enter and which is

used for the purpose of installing, operating, and maintaining equipment and/or cable.

Pulling tension--The term means the longitudinal force exerted on a cable during installation.

Qualified person--The term means a person who by reason of experience or training is familiar

with the operation to be performed and the hazards involved.

Switch--The term means a device for opening and closing or changing the connection of a

circuit. In these rules, a switch is understood to be manually operable, unless otherwise stated.

Tag--The term means a system or method of identifying circuits, systems or equipment for the

purpose of alerting persons that the circuit, system or equipment is being worked on.

Unstable material--The term means earth material, other than running, that because of its

nature or the influence of related conditions, cannot be depended upon to remain in place

without extra support, such as would be furnished by a system of shoring.

Vault--The term means an enclosure above or below ground which personnel may enter and is

used for the purpose of installing, operating, and/or maintaining equipment and/or cable.

Voltage--The term means the effective (rms) potential difference between any two conductors

or between a conductor and ground. Voltages are expressed in nominal values. The nominal

voltage of a system or circuit is the value assigned to a system or circuit of a given voltage class

for the purpose of convenient designation. The operating voltage of the system may vary above

or below this value.

Voltage of an effectively grounded circuit--The term means the voltage between any conductor

and ground unless otherwise indicated.

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