NFPA 70E ELECTRICAL HAZARD SAFETY
EXAM PAPER 2026 TESTED QUESTIONS AND
FULL SOLUTION GRADED A+
⫸ Arc Flash Hazard - A dangerous condition associated with the
possible release of energy caused by an electric arc
⫸ Arc Rating - The value attributed to materials that describes their
performance to exposure to an electrical arc discharge. The arc rating is
expressed in cal/cm^2 and is derived from the determined value of the
arc thermal performance value (ATPV) or energy of breakopen threshold
(E BT) (should a material system exhibit a breakopen resoponce below
the APTV value). Arc rating is reported as either APTV or E bt,
whichever is the lower value.
⫸ Barricade - 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 - A physical obstruction that is intended to prevent contact
with equipment or energized electrical conductors and circuit parts or to
prevent unauthorized access to a work area.
⫸ Shock boundaries - Limited approach boundary,
Restricted approach boundary,
Prohibited approach boundary (not in 2015)
, ⫸ Limited approach boundary - An approach limit at a distance from an
exposed energized electrical conductor or circtuit part within which a
shock hazard exists.
⫸ Restricted approach boundary - 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, for personnel working in
close proximity to the energized electrical conductor or circuit part.
⫸ Arc Flash Boundary - When an arc flash hazard exists, an approach
limit at a distance from a prospective arc source within which a person
could receive a second degree burn if an electrical arc flash were to
occur.
⫸ Electrically safe work condition - A state in which an electrical
conductor or circuit part has been disconnected from energized parts,
locked/tagged in accordance with established standards, tested to ensure
the absence of voltage, and grounded if determined necessary.
⫸ Hazard - A source of possible injury or damage to health
⫸ Incident Energy - The amount of thermal energy impressed on a
surface, a certain distance from the source, generated during an electrical
EXAM PAPER 2026 TESTED QUESTIONS AND
FULL SOLUTION GRADED A+
⫸ Arc Flash Hazard - A dangerous condition associated with the
possible release of energy caused by an electric arc
⫸ Arc Rating - The value attributed to materials that describes their
performance to exposure to an electrical arc discharge. The arc rating is
expressed in cal/cm^2 and is derived from the determined value of the
arc thermal performance value (ATPV) or energy of breakopen threshold
(E BT) (should a material system exhibit a breakopen resoponce below
the APTV value). Arc rating is reported as either APTV or E bt,
whichever is the lower value.
⫸ Barricade - 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 - A physical obstruction that is intended to prevent contact
with equipment or energized electrical conductors and circuit parts or to
prevent unauthorized access to a work area.
⫸ Shock boundaries - Limited approach boundary,
Restricted approach boundary,
Prohibited approach boundary (not in 2015)
, ⫸ Limited approach boundary - An approach limit at a distance from an
exposed energized electrical conductor or circtuit part within which a
shock hazard exists.
⫸ Restricted approach boundary - 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, for personnel working in
close proximity to the energized electrical conductor or circuit part.
⫸ Arc Flash Boundary - When an arc flash hazard exists, an approach
limit at a distance from a prospective arc source within which a person
could receive a second degree burn if an electrical arc flash were to
occur.
⫸ Electrically safe work condition - A state in which an electrical
conductor or circuit part has been disconnected from energized parts,
locked/tagged in accordance with established standards, tested to ensure
the absence of voltage, and grounded if determined necessary.
⫸ Hazard - A source of possible injury or damage to health
⫸ Incident Energy - The amount of thermal energy impressed on a
surface, a certain distance from the source, generated during an electrical
