INTERNATIONAL RESIDENTIAL
ELECTRICAL CODE TERMS EXAM
QUESTIONS AND ANSWERS
Conductor, Covered - ANSWER-A conductor encased within material of composition or
thickness that is not recognized by this Code as electrical insulation.
Conductor, Insulated - ANSWER-A conductor encased within material of composition
and thickness that is recognized by this Code as electrical insulation.
Conduit Body - ANSWER-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.
Connector, Pressure (Solderless) - ANSWER-A device that establishes a connection
between two or more conductors or between one or more conductors and a terminal by
means of mechanical pressure and without the use of solder.
Continuous Load - ANSWER-A load where the maximum current is expected to
continue for 3 hours or more.
Cooking Unit, Counter-Mounted - ANSWER-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.
Copper-Clad Aluminum Conductors - ANSWER-Conductors drawn from a copper-clad
aluminum rod with the copper metallurgically bonded to an aluminum core. The copper
forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each
strand of a stranded conductor.
Cutout Box - ANSWER-An enclosure designed for surface mounting that has swinging
doors or covers secured directly to and telescoping with the walls of the box proper.
Dead Front - ANSWER-Without live parts exposed to a person on the operating side of
the equipment.
Demand Factor - ANSWER-The ratio of the maximum demand of a system, or part of a
system, to the total connected load of a system or the part of the system under
consideration.
Device - ANSWER-A unit of an electrical system that carries or controls electrical
energy as it principal function
, Disconnecting Means - ANSWER-A device, or group of devices, or other means by
which the conductors of a circuit can be disconnected from their source of supply.
Dwelling, Dwelling Unit - ANSWER-A single unit, providing complete and independent
living facilities for one or more persons, including permanent provisions for living,
sleeping, cooking, and sanitation.
Dwelling, One-Family - ANSWER-A building consisting solely of one dwelling unit.
Dwelling, Two-Family - ANSWER-A building consisting solely of two dwelling units.
Effective Ground-Fault Current Path - ANSWER-An intentionally constructed, low-
impedance electrically conductive path designed and intended to carry current under
ground-fault conditions from the point of a ground fault on a wiring system to the
electrical supply source and that facilitates the operation of the overcurrent protective
device or ground-fault detectors.
Enclosed - ANSWER-Surrounded by a case, housing, fence, or walls that will prevent
persons from accidentally contacting energized parts.
Enclosure - ANSWER-The case or housing of apparatus, or the fence or walls
surrounding an installation to prevent personnel from accidentally contacting energized
parts or to protect the equipment from physical damage.
Energized - ANSWER-Electrically connected to, or is, a source of voltage.
Equipment - ANSWER-A general term including material, fittings, devices, appliances,
luminaires, apparatus, machinery and the like used as a part of, or in connection with,
an electrical installation.
Exposed (as applied to live parts) - ANSWER-Capable of being inadvertently touched or
approached nearer than a safe distance by a person.
Exposed (as applied to wiring methods) - ANSWER-On or attached to the surface or
behind panels designed to allow access.
Externally Operable - ANSWER-Capable of being operated without exposing the
operator to contact with live parts.
Bonding Jumper (Equipment) - ANSWER-The connection between two or more portions
of the equipment grounding conductor.
Bonding Jumper, Main - ANSWER-The connection between the grounded circuit
conductor and the equipment grounding conductor at the service.
ELECTRICAL CODE TERMS EXAM
QUESTIONS AND ANSWERS
Conductor, Covered - ANSWER-A conductor encased within material of composition or
thickness that is not recognized by this Code as electrical insulation.
Conductor, Insulated - ANSWER-A conductor encased within material of composition
and thickness that is recognized by this Code as electrical insulation.
Conduit Body - ANSWER-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.
Connector, Pressure (Solderless) - ANSWER-A device that establishes a connection
between two or more conductors or between one or more conductors and a terminal by
means of mechanical pressure and without the use of solder.
Continuous Load - ANSWER-A load where the maximum current is expected to
continue for 3 hours or more.
Cooking Unit, Counter-Mounted - ANSWER-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.
Copper-Clad Aluminum Conductors - ANSWER-Conductors drawn from a copper-clad
aluminum rod with the copper metallurgically bonded to an aluminum core. The copper
forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each
strand of a stranded conductor.
Cutout Box - ANSWER-An enclosure designed for surface mounting that has swinging
doors or covers secured directly to and telescoping with the walls of the box proper.
Dead Front - ANSWER-Without live parts exposed to a person on the operating side of
the equipment.
Demand Factor - ANSWER-The ratio of the maximum demand of a system, or part of a
system, to the total connected load of a system or the part of the system under
consideration.
Device - ANSWER-A unit of an electrical system that carries or controls electrical
energy as it principal function
, Disconnecting Means - ANSWER-A device, or group of devices, or other means by
which the conductors of a circuit can be disconnected from their source of supply.
Dwelling, Dwelling Unit - ANSWER-A single unit, providing complete and independent
living facilities for one or more persons, including permanent provisions for living,
sleeping, cooking, and sanitation.
Dwelling, One-Family - ANSWER-A building consisting solely of one dwelling unit.
Dwelling, Two-Family - ANSWER-A building consisting solely of two dwelling units.
Effective Ground-Fault Current Path - ANSWER-An intentionally constructed, low-
impedance electrically conductive path designed and intended to carry current under
ground-fault conditions from the point of a ground fault on a wiring system to the
electrical supply source and that facilitates the operation of the overcurrent protective
device or ground-fault detectors.
Enclosed - ANSWER-Surrounded by a case, housing, fence, or walls that will prevent
persons from accidentally contacting energized parts.
Enclosure - ANSWER-The case or housing of apparatus, or the fence or walls
surrounding an installation to prevent personnel from accidentally contacting energized
parts or to protect the equipment from physical damage.
Energized - ANSWER-Electrically connected to, or is, a source of voltage.
Equipment - ANSWER-A general term including material, fittings, devices, appliances,
luminaires, apparatus, machinery and the like used as a part of, or in connection with,
an electrical installation.
Exposed (as applied to live parts) - ANSWER-Capable of being inadvertently touched or
approached nearer than a safe distance by a person.
Exposed (as applied to wiring methods) - ANSWER-On or attached to the surface or
behind panels designed to allow access.
Externally Operable - ANSWER-Capable of being operated without exposing the
operator to contact with live parts.
Bonding Jumper (Equipment) - ANSWER-The connection between two or more portions
of the equipment grounding conductor.
Bonding Jumper, Main - ANSWER-The connection between the grounded circuit
conductor and the equipment grounding conductor at the service.
