Circuit breaker cont'd - hdbk109220040234

DOE-HDBK-1092-2004

ii. Covered--A conductor encased within material of composition or thickness that is not

recognized as electrical insulation.

iii. Insulated--A conductor encased within material of composition and thickness that is

recognized as electrical insulation.

Conduit body--A separate portion of a conduit or tubing system that provides access through a

removable cover(s) to the interior of the system at a junction of two or more sections of the

system or at a terminal point of the system. Boxes such as FS and FD or larger cast or sheet

metal boxes are not classified as conduit bodies.

Controller--A device or group of devices that serves to govern, in some predetermined manner,

the electric power delivered to the apparatus to which it is connected.

Cooking unit, counter-mounted--A cooking appliance designed for mounting in or on a counter

and consisting of one or more heating elements, internal wiring, and built-in or separately

mountable controls. (See "Oven, wall-mounted.")

Covered conductor--See "Conductor."

Cutout--(Over 600 volts, nominal.) An assembly of a fuse support with either a fuseholder, fuse

carrier, or disconnecting blade. The fuseholder or fuse carrier may include a conducting element

(fuse link), or may act as the disconnecting blade by the inclusion of a nonfusible member.

Cutout box--An enclosure designed for surface mounting and having swinging doors or covers

secured directly to and telescoping with the walls of the box proper. (See "Cabinet.")

Damp location--See "Location."

Dead front--Without live parts exposed to a person on the operating side of the equipment.

Device--A unit of an electrical system which is intended to carry but not utilize electric energy.

Dielectric heating--Dielectric heating is the heating of a nominally insulating material due to its

own dielectric losses when the material is placed in a varying electric field.

Disconnecting means--A device, or group of devices, or other means by which the conductors

of a circuit can be disconnected from their source of supply.

Disconnecting (or Isolating) switch--(Over 600 volts, nominal.) A mechanical switching device

used for isolating a circuit or equipment from a source of power.

Dry location--See "Location."

Electric sign--A fixed, stationary, or portable self--contained, electrically illuminated utilization

equipment with words or symbols designed to convey information or attract attention.

Enclosed--Surrounded by a case, housing, fence or walls which will prevent persons from

accidentally contacting energized parts.

B-8