NFPA 70E Questions and Verified
Solutions 100% Correct Already Graded
A+
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 dangerous condition associated with the possible release of energy caused
by an electric arc
Arc Rating - 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 - 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 - 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 - Answer: Limited approach boundary,
Restricted approach boundary,
Prohibited approach boundary (not in 2015)
Limited approach boundary - Answer: An approach limit at a distance from an exposed energized
electrical conductor or circtuit part within which a shock hazard exists.
Solutions 100% Correct Already Graded
A+
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 dangerous condition associated with the possible release of energy caused
by an electric arc
Arc Rating - 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 - 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 - 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 - Answer: Limited approach boundary,
Restricted approach boundary,
Prohibited approach boundary (not in 2015)
Limited approach boundary - Answer: An approach limit at a distance from an exposed energized
electrical conductor or circtuit part within which a shock hazard exists.
