National Electrical Code Vocabulary Exam Questions with Verified Answers (Rated A+)
Readily Accessible Equipment - Answers Equipment capable of being reached quickly without the use of
tools.
Ampacity - Answers The maximum current that a conductor can carry continuously, under the
conditions of use. Ampacity is derived from the words ampere and capacity.
Conductor - Answers A slender rod or wire that's used to control the flow of electrons in an electrical
unit.
Continuous Load - Answers A load in which the maximum current is expected to continue for three
hours or more.
Energized - Answers Being electrically connected to a source of voltage or being a source of voltage.
Fitting - Answers An electrical system accessory that performs a mechanical function. Connectors,
couplings, locknuts, and bushings are examples of components of the electrical system that serve this
function.
Neutral Comductor - Answers A conductor connected to the neutral point of a system that's intended to
carry current under normal conditions.
Over-Current - Answers Any current in excess of that for which the conductor or equipment is rated.
Overcurrents are caused by overloads, ground faults, or short circuits.
Raceway - Answers A metal or nonmetallic enclosed channel for conductors.
Readily accessible equipment: Equipment capable of being reached quickly without the use of tools.
Disconnecting Means - Answers A device (or group of devices) or other means by which the conductors
of a circuit can be disconnected from their source of supply.
Arc-Fault Circuit Interrupters (AFCI's) - Answers Special devices that provide protection against
intermittent arcing faults within select branch circuits and devices.
Single Receptacle - Answers A single contact device with no other contact device on the same yoke.
Feeder - Answers All of the circuit conductors between the service equipment, the source of a
separately derived system, or other supply source, and the final branch-circuit overcurrent device.
Demand Factor - Answers 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.
Selective Coordination - Answers The selection and setting of protective devices in an electrical system
in a manner that causes only the smallest part of the electrical system to be deenergized during an
overcurrent.
Readily Accessible Equipment - Answers Equipment capable of being reached quickly without the use of
tools.
Ampacity - Answers The maximum current that a conductor can carry continuously, under the
conditions of use. Ampacity is derived from the words ampere and capacity.
Conductor - Answers A slender rod or wire that's used to control the flow of electrons in an electrical
unit.
Continuous Load - Answers A load in which the maximum current is expected to continue for three
hours or more.
Energized - Answers Being electrically connected to a source of voltage or being a source of voltage.
Fitting - Answers An electrical system accessory that performs a mechanical function. Connectors,
couplings, locknuts, and bushings are examples of components of the electrical system that serve this
function.
Neutral Comductor - Answers A conductor connected to the neutral point of a system that's intended to
carry current under normal conditions.
Over-Current - Answers Any current in excess of that for which the conductor or equipment is rated.
Overcurrents are caused by overloads, ground faults, or short circuits.
Raceway - Answers A metal or nonmetallic enclosed channel for conductors.
Readily accessible equipment: Equipment capable of being reached quickly without the use of tools.
Disconnecting Means - Answers A device (or group of devices) or other means by which the conductors
of a circuit can be disconnected from their source of supply.
Arc-Fault Circuit Interrupters (AFCI's) - Answers Special devices that provide protection against
intermittent arcing faults within select branch circuits and devices.
Single Receptacle - Answers A single contact device with no other contact device on the same yoke.
Feeder - Answers All of the circuit conductors between the service equipment, the source of a
separately derived system, or other supply source, and the final branch-circuit overcurrent device.
Demand Factor - Answers 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.
Selective Coordination - Answers The selection and setting of protective devices in an electrical system
in a manner that causes only the smallest part of the electrical system to be deenergized during an
overcurrent.
