NFPA 70E questions and answers 2025\2026
A+ Grade
Arrangement of 70E
- correct 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
- correct answer A dangerous condition associated with the possible release of energy caused by an
electric arc
Arc Rating
- correct answer 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
- correct answer 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
- correct answer 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
- correct answer Limited approach boundary,
, Restricted approach boundary,
Prohibited approach boundary (not in 2015)
Limited approach boundary
- correct answer An approach limit at a distance from an exposed energized electrical conductor or
circtuit part within which a shock hazard exists.
Restricted approach boundary
- correct answer 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
- correct answer 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
- correct answer 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
- correct answer A source of possible injury or damage to health
Incident Energy
- correct answer The amount of thermal energy impressed on a surface, a certain distance from the
source, generated during an electrical arc event. Incident energy is typically expressed in calories per
square centimeter.
Incident energy analysis
- correct answer A component of an arc flash risk assessment used to predict the incident energy of an
arc flash for a specified set of conditions.
A+ Grade
Arrangement of 70E
- correct 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
- correct answer A dangerous condition associated with the possible release of energy caused by an
electric arc
Arc Rating
- correct answer 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
- correct answer 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
- correct answer 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
- correct answer Limited approach boundary,
, Restricted approach boundary,
Prohibited approach boundary (not in 2015)
Limited approach boundary
- correct answer An approach limit at a distance from an exposed energized electrical conductor or
circtuit part within which a shock hazard exists.
Restricted approach boundary
- correct answer 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
- correct answer 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
- correct answer 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
- correct answer A source of possible injury or damage to health
Incident Energy
- correct answer The amount of thermal energy impressed on a surface, a certain distance from the
source, generated during an electrical arc event. Incident energy is typically expressed in calories per
square centimeter.
Incident energy analysis
- correct answer A component of an arc flash risk assessment used to predict the incident energy of an
arc flash for a specified set of conditions.
