NFPA 70 - Article 100 – Definitions
Exam 2025 Questions and Answers
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.
Appliance Branch Circuit - 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.
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.
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.
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, Bonded (Bonding) - ANSWER✔✔-Connected to establish electrical continuity and conductivity.
Main Bonding Jumper - ANSWER✔✔-The connection between the grounded circuit conductor
and the equipment grounding conductor at the service.
System Bonding Jumper - ANSWER✔✔-The connection between the grounded circuit conductor
and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately
derived system.
Branch Circuit - ANSWER✔✔-The circuit conductors between the final overcurrent device
protecting the circuit and the outlet(s).
Building - ANSWER✔✔-A structure that stands alone or that is cut off from adjoining structures by
fire walls with all openings therein protected by approved fire doors.
Cabinet - ANSWER✔✔-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.
Circuit Breaker - ANSWER✔✔-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.
Concealed - ANSWER✔✔-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.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
Exam 2025 Questions and Answers
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.
Appliance Branch Circuit - 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.
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.
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.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, Bonded (Bonding) - ANSWER✔✔-Connected to establish electrical continuity and conductivity.
Main Bonding Jumper - ANSWER✔✔-The connection between the grounded circuit conductor
and the equipment grounding conductor at the service.
System Bonding Jumper - ANSWER✔✔-The connection between the grounded circuit conductor
and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately
derived system.
Branch Circuit - ANSWER✔✔-The circuit conductors between the final overcurrent device
protecting the circuit and the outlet(s).
Building - ANSWER✔✔-A structure that stands alone or that is cut off from adjoining structures by
fire walls with all openings therein protected by approved fire doors.
Cabinet - ANSWER✔✔-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.
Circuit Breaker - ANSWER✔✔-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.
Concealed - ANSWER✔✔-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.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
