NFPA 70E EXAM LATEST UPDATED 2025/2026
Arrangement of 70E - ANSWER Introduction (Article 90)
Chapter 1 Safety Related Work Practices
Chapter 2 Safety Related Maintenance Requirements
Chapter 3 Safety Requirements for Special Equipment
Annexes (Article 350)
Arc Flash Hazard - ANSWER A hazardous condition with the potential for the
release of energy resulting from an electric arc
Arc Rating - ANSWER The number assigned to materials representing their
performance to exposure to an electrical arc discharge. The arc rating is stated
in cal/cm^2 and calculated from the established value of the arc thermal
performance value (ATPV) or breakopen threshold energy (E BT) (if a material
system is determined to respond in breakopen below the APTV value). Arc
rating is expressed either as APTV or E bt, whichever is lower.
Barricade - ANSWER A physical barrier such as tapes, cones, or A-frame-type
wood or metal frames to warn and bar access.
Barrier - ANSWER A physical barrier to keep contact with equipment or
energized electrical conductors and circuit components away or to prevent
unauthorized people from reaching a work area.
, Shock boundaries - ANSWER Limited approach boundary,
Restricted approach boundary
Prohibited approach boundary (not in 2015)
Restricted approach boundary - ANSWER An approach limit at a distance from
an exposed energized electrical conductor or circuit portion within which there
is a hazard of shock.
Restricted approach boundary - ANSWER A boundary of approach distance
from an exposed energized electrical conductor or circuit component within
which there is a greater likelihood of electric shock, by electrical arc-over in
combination with inadvertent movement, for persons approaching in close
proximity to the energized electrical conductor or circuit component.
Arc Flash Boundary - ANSWER Where there is an arc flash hazard, an
approach limit at a distance from a possible arc source within which a person
could receive a second degree burn if an electrical arc flash were to happen.
Electrical safe working condition - ANSWER A state where an electrical
conductor or a part of the circuit has been separated from energized parts,
locked/tagged according to accepted standards, verified for the lack of voltage,
and grounded if found to be required.
Hazard - ANSWER A source of possible injury or harm to health
Incident Energy - ANSWER The amount of thermal energy impressed upon a
surface, a given distance from the source, created in an electrical arc incident.
Incident energy is most commonly expressed in calories per square centimeter.
Arrangement of 70E - ANSWER Introduction (Article 90)
Chapter 1 Safety Related Work Practices
Chapter 2 Safety Related Maintenance Requirements
Chapter 3 Safety Requirements for Special Equipment
Annexes (Article 350)
Arc Flash Hazard - ANSWER A hazardous condition with the potential for the
release of energy resulting from an electric arc
Arc Rating - ANSWER The number assigned to materials representing their
performance to exposure to an electrical arc discharge. The arc rating is stated
in cal/cm^2 and calculated from the established value of the arc thermal
performance value (ATPV) or breakopen threshold energy (E BT) (if a material
system is determined to respond in breakopen below the APTV value). Arc
rating is expressed either as APTV or E bt, whichever is lower.
Barricade - ANSWER A physical barrier such as tapes, cones, or A-frame-type
wood or metal frames to warn and bar access.
Barrier - ANSWER A physical barrier to keep contact with equipment or
energized electrical conductors and circuit components away or to prevent
unauthorized people from reaching a work area.
, Shock boundaries - ANSWER Limited approach boundary,
Restricted approach boundary
Prohibited approach boundary (not in 2015)
Restricted approach boundary - ANSWER An approach limit at a distance from
an exposed energized electrical conductor or circuit portion within which there
is a hazard of shock.
Restricted approach boundary - ANSWER A boundary of approach distance
from an exposed energized electrical conductor or circuit component within
which there is a greater likelihood of electric shock, by electrical arc-over in
combination with inadvertent movement, for persons approaching in close
proximity to the energized electrical conductor or circuit component.
Arc Flash Boundary - ANSWER Where there is an arc flash hazard, an
approach limit at a distance from a possible arc source within which a person
could receive a second degree burn if an electrical arc flash were to happen.
Electrical safe working condition - ANSWER A state where an electrical
conductor or a part of the circuit has been separated from energized parts,
locked/tagged according to accepted standards, verified for the lack of voltage,
and grounded if found to be required.
Hazard - ANSWER A source of possible injury or harm to health
Incident Energy - ANSWER The amount of thermal energy impressed upon a
surface, a given distance from the source, created in an electrical arc incident.
Incident energy is most commonly expressed in calories per square centimeter.
