NFPA 70- ARTICLE 100 - Definitions Exam Questions and Answers Solved Correctly Rated A+
accessible - Answers admitting close approach, not guarded by locked doors-elevation-or other effective
means
approved - Answers acceptable to the authority having jurisdiction
arc flash hazards - Answers a source of possible injury or damage to health associated with the release
of energy caused by an electric arc
arc flash suit - Answers a complete arc-rated clothing and equipment that covers the entire body except
for the hands and feet
arc rating - Answers the value attributed to materials that describes their performance to exposure to an
electrical arc discharge
Attachment Plug (Plug Cap) (Plug) - Answers 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) - Answers 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 - Answers Performing a function without the necessity of human intervention.
balaclava - Answers an arc-rated head-protective fabric that protects the neck and head except for a
small portion of the facial area
barricade - Answers a physical obstruction such as tapes, cones, or A-frame-type wood or metal
structures intended to provide a warning and to limit access
barrier - Answers a physical obstruction that is intended to prevent contact with equipment or energizes
electrical conductors and circuit parts
Bonded (Bonding) - Answers Connected to establish electrical continuity and conductivity.
Bonding Conductor or Jumper - Answers A reliable conductor to ensure the required electrical
conductivity between metal parts required to be electrically connected.
Boundary, Arc Flash - Answers when an arc flash hazard exist, an approach limit from an arc source at
which the incident energy equals 1.2 cal/cm^2 (5J/cm^2)
Boundary, Limited Approach - Answers an approach limit at a distance from an exposed energizes
electrical conductor or circuit part within which a shock hazard exists
, Boundary, Restricted Approach - Answers an approach limit at a distance from an exposed energized
electrical conductor or circuit part within which there is an increased likelihood of electric shock, due to
electrical arc-over combined with inadvertent movement
building - Answers 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 - Answers 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 can be hung
circuit breaker - Answers 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.
conductive - Answers suitable for carrying electric current
conductor, bare - Answers A conductor having no covering or electrical insulation whatsoever.
Conductor, Covered - Answers A conductor encased within material of composition or thickness that is
not recognized by this Code as electrical insulation.
conductor, insulated - Answers a conductor encased within material of composition or thickness that is
recognized by NFPA 70, National Electrical Code, as electrical insulation
controller - Answers a device or ground of devices that serves to govern in some predetermined
manner, the electric power delivered to the apparatus to which it is connected
current-limiting overcurrent protective device - Answers a device that, when interrupting currents in its
current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less
than obtainable in the same circuit if the device were replaced with a solid conductor having
comparable impedance
cutout - Answers an assembly of a fuse support with either a fuseholder, fuse carrier, or disconnecting
blade by the inclusion of a nonfusible member
de-energized - Answers Free from any electrical connection to a source of potential difference and from
electrical charge, not having potential different from that of the earth
device - Answers A unit of an electrical system, other than a conductor, that carries or controls electric
energy as its principal function.
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.
Disconnecting (or Isolating) Switch (Disconnector, Isolator) - Answers a mechanic switching device used
for isolating a circuit or equipment from a source of power
accessible - Answers admitting close approach, not guarded by locked doors-elevation-or other effective
means
approved - Answers acceptable to the authority having jurisdiction
arc flash hazards - Answers a source of possible injury or damage to health associated with the release
of energy caused by an electric arc
arc flash suit - Answers a complete arc-rated clothing and equipment that covers the entire body except
for the hands and feet
arc rating - Answers the value attributed to materials that describes their performance to exposure to an
electrical arc discharge
Attachment Plug (Plug Cap) (Plug) - Answers 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) - Answers 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 - Answers Performing a function without the necessity of human intervention.
balaclava - Answers an arc-rated head-protective fabric that protects the neck and head except for a
small portion of the facial area
barricade - Answers a physical obstruction such as tapes, cones, or A-frame-type wood or metal
structures intended to provide a warning and to limit access
barrier - Answers a physical obstruction that is intended to prevent contact with equipment or energizes
electrical conductors and circuit parts
Bonded (Bonding) - Answers Connected to establish electrical continuity and conductivity.
Bonding Conductor or Jumper - Answers A reliable conductor to ensure the required electrical
conductivity between metal parts required to be electrically connected.
Boundary, Arc Flash - Answers when an arc flash hazard exist, an approach limit from an arc source at
which the incident energy equals 1.2 cal/cm^2 (5J/cm^2)
Boundary, Limited Approach - Answers an approach limit at a distance from an exposed energizes
electrical conductor or circuit part within which a shock hazard exists
, Boundary, Restricted Approach - Answers an approach limit at a distance from an exposed energized
electrical conductor or circuit part within which there is an increased likelihood of electric shock, due to
electrical arc-over combined with inadvertent movement
building - Answers 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 - Answers 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 can be hung
circuit breaker - Answers 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.
conductive - Answers suitable for carrying electric current
conductor, bare - Answers A conductor having no covering or electrical insulation whatsoever.
Conductor, Covered - Answers A conductor encased within material of composition or thickness that is
not recognized by this Code as electrical insulation.
conductor, insulated - Answers a conductor encased within material of composition or thickness that is
recognized by NFPA 70, National Electrical Code, as electrical insulation
controller - Answers a device or ground of devices that serves to govern in some predetermined
manner, the electric power delivered to the apparatus to which it is connected
current-limiting overcurrent protective device - Answers a device that, when interrupting currents in its
current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less
than obtainable in the same circuit if the device were replaced with a solid conductor having
comparable impedance
cutout - Answers an assembly of a fuse support with either a fuseholder, fuse carrier, or disconnecting
blade by the inclusion of a nonfusible member
de-energized - Answers Free from any electrical connection to a source of potential difference and from
electrical charge, not having potential different from that of the earth
device - Answers A unit of an electrical system, other than a conductor, that carries or controls electric
energy as its principal function.
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.
Disconnecting (or Isolating) Switch (Disconnector, Isolator) - Answers a mechanic switching device used
for isolating a circuit or equipment from a source of power
