Terms

Question 1

A cylindrical assembly composed of a conductor centered inside a metallic tube or shield,
separated by a dielectric material, and usually covered by an insulating jacket.

Answer 1

Coaxial Cable

Question 2

A qualifying term indicating that the circuit breaker does
not have any adjustment to alter the value of current at which it will trip or the time required for its
operation.

Answer 2

Nonadjustable (as applied to circuit breakers)

Question 3

A cable containing optical fibers and current-carrying electrical
conductor

Answer 3

Composite Optical Fiber Cable

Question 4

Intermittent operation in which the load conditions are regularly recurrent.

Answer 4

Duty, Periodic

Question 5

A single unit, providing complete and independent living facilities for one or more
persons, including permanent provisions for living, sleeping, cooking, and sanitation.

Answer 5

Dwelling Unit

Question 6

Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally
contacting energized parts.

Answer 6

Enclosed

Question 7

A nonmetallic raceway placed within a larger raceway.

Answer 7

Innerduct

Question 8

Constructed so that moisture will not enter the enclosure under specified test conditions.

Answer 8

Watertight

Question 9

A manually operated device used in conjunction with a transfer switch to
provide a means of directly connecting load conductors to a power source and of disconnecting the
transfer switch

Answer 9

Switch, Bypass Isolation

Question 10

An assembly completely enclosed on all sides and top with sheet metal (except for ventilating
openings and inspection windows) and containing primary power circuit switching, interrupting devices,
or both, with buses and connections.

Answer 10

Switchgear

Question 11

The conductors and equipment for delivering electric energy from the serving utility to the
wiring system of the premises served.

Answer 11

Service

Question 12

Power conversion equipment that provides a means of adjusting the speed of an
electric motor.

Answer 12

Adjustable Speed Drive

Question 13

An area including a basin with one or more of the following: a toilet, a tub, or a shower.

Answer 13

Bathroom

Question 14

A branch circuit that supplies only one utilization equipment.

Answer 14

Branch Circuit, Individual

Question 15

A load where the maximum current is expected to continue for 3 hours or more.

Answer 15

Continuous Load.

Question 16

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

Answer 16

Dead Front

Question 17

An enclosure designed for surface mounting that has swinging doors or covers secured
directly to and telescoping with the walls of the enclosure.

Answer 17

Cutout Box

Question 18

Enclosures constructed so that dust will not enter the enclosing case under specified test
conditions

Answer 18

Dusttight

Question 19

A device, or group of devices, or other means by which the conductors of a circuit
can be disconnected from their source of supply.

Answer 19

Disconnecting Means

Question 20

All circuit conductors between the service equipment, the source of a separately derived system,
or other power supply source and the final branch-circuit overcurrent device.

Answer 20

Feeder

Question 21

A building or portion of a building in which one or more self-propelled vehicles can be kept for
use, sale, storage, rental, repair, exhibition, or demonstration purposes.

Answer 21

Garage

Question 22

An electrically conductive path from the point of a ground fault on a
wiring system through normally non-current-carrying conductors, equipment, or the earth to electrical
supply source.

Answer 22

Ground-Fault Current Path

Question 23

A device that establishes an electrical connection to the earth.

Answer 23

Grounding Electrode

Question 24

An assembly of two or more components consisting of one of the following:
(1) power circuit components only, such as motor controllers, overload relays, fused disconnect switches,

Answer 24

Industrial Control Panel

Question 25

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

Answer 25

Ampacity

Question 26

Utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, and so forth.

Answer 26

Appliance

Question 27

Connected to establish electrical continuity and conductivity.

Answer 27

Bonded (Bonding)

Question 28

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle.

Answer 28

Attachment Plug (Plug Cap) (Plug)

Question 29

Performing a function without the necessity of human intervention.

Answer 29

Automatic

Question 30

The connection between the grounded circuit conductor and the equipment grounding conductor at the service.

Answer 30

Bonding Jumper, Main

Question 31

An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung.

Answer 31

Cabinet

Question 32

A structure that stands alone or that is separated from adjoining structures by fire walls.

Answer 32

Building

Question 33

A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating.

Answer 33

Circuit Breaker

Question 34

Equipment that controls dc voltage or dc current, or both, and that is used to charge a battery or other energy storage device.

Answer 34

Charge Controller

Question 35

A qualifying term indicating that no delay is purposely introduced in the tripping action of the circuit breaker.

Answer 35

Instantaneous Trip (as applied to circuit breakers)

Question 37

The value of current, time, or both, at which an adjustable circuit breaker is set to trip.

Answer 37

Setting (of circuit breakers)

Question 38

Rendered inaccessible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them.

Answer 38

Concealed

Question 39

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.

Answer 39

Conduit Body

Question 40

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 mountable controls.

Answer 40

Cooking Unit, Counter-Mounted