Definitions Applicable to 29 CFR 1910.269 cont'd

DOE-HDBK-1092-2004

Clearance (for work)--Authorization to perform specified work or permission to enter a restricted

area.

Communication lines--(See Lines, communication.)

Conductor--A material, usually in the form of a wire, cable, or bus bar, used for carrying an

electric current.

Covered conductor--A conductor covered with a dielectric having no rated insulating strength or

having a rated insulating strength less than the voltage of the circuit in which the conductor is

used.

Current-carrying part--A conducting part intended to be connected in an electric circuit to a

source of voltage. Non-current-carrying parts are those not intended to be so connected.

Deenergized--Free from any electrical connection to a source of potential difference and from

electric charge; not having a potential different from that of the earth.

NOTE: The term is used only with reference to current-carrying parts, which are sometimes

energized (alive).

Designated employee (designated person)--An employee (or person) who is designated by

the employer to perform specific duties under the terms of this section and who is

knowledgeable in the construction and operation of the equipment and the hazards involved.

Electric line truck--A truck used to transport personnel, tools, and material for electric supply

line work.

Electric supply equipment--Equipment that produces, modifies, regulates, controls, or

safeguards a supply of electric energy.

Electric supply lines--(See Lines, electric supply.)

Electric utility--An organization responsible for the installation, operation, or maintenance of

an electric supply system.

Enclosed space--A working space, such as a manhole, vault, tunnel, or shaft, that has a

limited means of egress or entry, that is designed for periodic employee entry under normal

operating conditions, and that under normal conditions does not contain a hazardous

atmosphere, but that may contain a hazardous atmosphere under abnormal conditions.

NOTE: Spaces that are enclosed but not designed for employee entry under normal operating

conditions are not considered to be enclosed spaces for the purposes of this section.

Similarly, spaces that are enclosed and that are expected to contain a hazardous

atmosphere are not considered to be enclosed spaces for the purposes of this section.

Such spaces meet the definition of permit spaces in 1910.146 of this Part, and entry into

them must be performed in accordance with that standard.

Energized (alive, live)--Electrically connected to a source of potential difference, or

electrically charged so as to have a potential significantly different from that of earth in the

vicinity.

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