NFPA 70E EXAM 2025 QUESTIONS
AND ANSWERS
Three main electrical hazards working on energized circuit - ANSWER✔✔-Shock, fire, arc
What is an arc flash? - ANSWER✔✔-A type of electrical explosion or discharge that results from
low impedance connection through air to ground or another phase.
What is an arc blast? - ANSWER✔✔-The explosive burst of energy that occurs during an arc flash.
What determines the effects of shock on the body? - ANSWER✔✔-Time, path, amount of current
What is the onset of second-degree burn - ANSWER✔✔-1.2 cal/cm^2
How is FR clothing related - ANSWER✔✔-Arc Thermal Protect Value
What are two field methods of testing dielectric gloves? - ANSWER✔✔-Roll up method and glove
inflator
How often do rubber gloves need to be sent to be dielectrically tested? - ANSWER✔✔-Before first
issue and every six months there after
All testing equipment must be ___________ for the circuit and equipment to be tested -
ANSWER✔✔-Rated
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
AND ANSWERS
Three main electrical hazards working on energized circuit - ANSWER✔✔-Shock, fire, arc
What is an arc flash? - ANSWER✔✔-A type of electrical explosion or discharge that results from
low impedance connection through air to ground or another phase.
What is an arc blast? - ANSWER✔✔-The explosive burst of energy that occurs during an arc flash.
What determines the effects of shock on the body? - ANSWER✔✔-Time, path, amount of current
What is the onset of second-degree burn - ANSWER✔✔-1.2 cal/cm^2
How is FR clothing related - ANSWER✔✔-Arc Thermal Protect Value
What are two field methods of testing dielectric gloves? - ANSWER✔✔-Roll up method and glove
inflator
How often do rubber gloves need to be sent to be dielectrically tested? - ANSWER✔✔-Before first
issue and every six months there after
All testing equipment must be ___________ for the circuit and equipment to be tested -
ANSWER✔✔-Rated
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
