NEC ARTICLE 100 Comprehensive
Questions (Frequently Tested) with
Verified Answers Graded A+
Accessible (as applied to equipment) - Answer: Admitting close approach; not guarded by
locked doors, elevation, or other effective means.
Accessible (as applied to wiring methods) - Answer: Capable of being removed or exposed
without damaging the building structure or finish or not permanently closed in by the structure
or finish of the building.
Accessible, Readily (Readily Accessible) - Answer: Capable of being reached quickly for
operation, renewal, or inspections without requiring those to whom ready access is requisite to
actions such as to use tools, to climb over or remove obstacles, or to resort to portable ladders,
and so forth.
requisite - Answer: required; necessary
Adjustable Speed Drive - Answer: Power conversion equipment that provides a means of
adjusting the speed of an electric motor.
Adjustable Speed Drive System - Answer: A combination of an adjustable speed drive, its
associated motor(s), and auxiliary equipment.
Ampacity - Answer: The maximum current, in amperes, that a conductor can carry continuously
under the conditions of use without exceeding its temperature rating.
,Appliance - Answer: 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.
Approved - Answer: Acceptable to the authority having jurisdiction.
Arc-Fault Circuit Interrupter (AFCI) - Answer: A device intended to provide protection from the
effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-
energize the circuit when an arc fault is detected.
Askarel - Answer: A generic term for a group of nonflammable synthetic chlorinated
hydrocarbons used as electrical insulating media.
Attachment Plug (Plug Cap) (Plug) - Answer: 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.
Authority Having Jurisdiction (AHJ) - Answer: An organization, office, or individual responsible
for enforcing the requirements of a code or standard, or for approving equipment, materials, an
installation, or a procedure.
automatic - Answer: Performing a function without the necessity of human intervention.
Bathroom - Answer: An area including a basin with one or more of the following: a toilet, a
urinal, a tub, a shower, a bidet, or similar plumbing fixtures.
Battery System - Answer: Interconnected battery subsystems consisting of one or more storage
batteries and battery chargers, and can include inverters, converters, and associated electrical
equipment.
, Bonded (Bonding) - Answer: Connected to establish electrical continuity and conductivity.
Bonding Conductor or Jumper - Answer: A reliable conductor to ensure the required electrical
conductivity between metal parts required to be electrically connected.
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.
Branch Circuit - Answer: The circuit conductors between the final overcurrent device protecting
the circuit and the outlet(s).
Branch Circuit, Appliance - Answer: A branch circuit that supplies energy to one or more outlets
to which appliances are to be connected and that has no permanently connected luminaires
that are not a part of an appliance.
Branch Circuit, General-Purpose - Answer: A branch circuit that supplies two or more
receptacles or outlets for lighting and appliances.
Branch Circuit, Individual - Answer: A branch circuit that supplies only one utilization
equipment.
Branch Circuit, Multiwire - Answer: A branch circuit that consists of two or more ungrounded
conductors that have a voltage between them, and a grounded conductor that has equal
voltage between it and each ungrounded conductor of the circuit and that is connected to the
neutral or grounded conductor of the system.
Questions (Frequently Tested) with
Verified Answers Graded A+
Accessible (as applied to equipment) - Answer: Admitting close approach; not guarded by
locked doors, elevation, or other effective means.
Accessible (as applied to wiring methods) - Answer: Capable of being removed or exposed
without damaging the building structure or finish or not permanently closed in by the structure
or finish of the building.
Accessible, Readily (Readily Accessible) - Answer: Capable of being reached quickly for
operation, renewal, or inspections without requiring those to whom ready access is requisite to
actions such as to use tools, to climb over or remove obstacles, or to resort to portable ladders,
and so forth.
requisite - Answer: required; necessary
Adjustable Speed Drive - Answer: Power conversion equipment that provides a means of
adjusting the speed of an electric motor.
Adjustable Speed Drive System - Answer: A combination of an adjustable speed drive, its
associated motor(s), and auxiliary equipment.
Ampacity - Answer: The maximum current, in amperes, that a conductor can carry continuously
under the conditions of use without exceeding its temperature rating.
,Appliance - Answer: 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.
Approved - Answer: Acceptable to the authority having jurisdiction.
Arc-Fault Circuit Interrupter (AFCI) - Answer: A device intended to provide protection from the
effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-
energize the circuit when an arc fault is detected.
Askarel - Answer: A generic term for a group of nonflammable synthetic chlorinated
hydrocarbons used as electrical insulating media.
Attachment Plug (Plug Cap) (Plug) - Answer: 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.
Authority Having Jurisdiction (AHJ) - Answer: An organization, office, or individual responsible
for enforcing the requirements of a code or standard, or for approving equipment, materials, an
installation, or a procedure.
automatic - Answer: Performing a function without the necessity of human intervention.
Bathroom - Answer: An area including a basin with one or more of the following: a toilet, a
urinal, a tub, a shower, a bidet, or similar plumbing fixtures.
Battery System - Answer: Interconnected battery subsystems consisting of one or more storage
batteries and battery chargers, and can include inverters, converters, and associated electrical
equipment.
, Bonded (Bonding) - Answer: Connected to establish electrical continuity and conductivity.
Bonding Conductor or Jumper - Answer: A reliable conductor to ensure the required electrical
conductivity between metal parts required to be electrically connected.
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.
Branch Circuit - Answer: The circuit conductors between the final overcurrent device protecting
the circuit and the outlet(s).
Branch Circuit, Appliance - Answer: A branch circuit that supplies energy to one or more outlets
to which appliances are to be connected and that has no permanently connected luminaires
that are not a part of an appliance.
Branch Circuit, General-Purpose - Answer: A branch circuit that supplies two or more
receptacles or outlets for lighting and appliances.
Branch Circuit, Individual - Answer: A branch circuit that supplies only one utilization
equipment.
Branch Circuit, Multiwire - Answer: A branch circuit that consists of two or more ungrounded
conductors that have a voltage between them, and a grounded conductor that has equal
voltage between it and each ungrounded conductor of the circuit and that is connected to the
neutral or grounded conductor of the system.
