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NFPA 70 Questions and Answers
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NFPA 70E, Standard for Electrical Safety in the Workplace, consists of? chapters, 16 informative annexes, the Foreword to NFPA 70E, and Article 90, Introduction. Chapter 1 is divided into? articles. ✔✔3/
The appointment of the NFPA 70E Committee was announced on January 7,? , and was formed to assist? in preparing electrical safety standards that would serve its requirements. ✔✔1976/ OSHA
he 2004 edition of NFPA 70E introduced the requirements of?. The 2015 edition? all previous editions. ✔✔the energized electrical work permit / supersedes
The Informational Note to the definition of arc flash boundary states that a second degree burn is possible by an exposure of unprotected skin to an electric arc flash above the incident energy level of?. ✔✔1.2 cal/cm
An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists ✔✔Limited approach boundry
An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk of shock, due to electrical arc-over combined with inadvertent movement, for personnel working in close proximity to the energized electrical conductor or circuit part ✔✔Restricted approach boundry
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
Answer 3 ✔✔Arc Flash Boundry
An electrical hazard is defined as a dangerous condition such that contact or? can result in electric shock, arc flash burn, thermal burn, or?. ✔✔Equipment failure/ Blast
Incident energy is defined as the amount of thermal energy impressed on a surface, at a certain distance from the source, generated during an electrical arc event. One of the units used to measure incident energy is?. ✔✔calories per centimeter squared (cal/cm2)
A qualified person is defined as one who has demonstrated skills and knowledge related to the construction and? of electrical equipment and installations and has received safety training to? and avoid the hazards involved. ✔✔Operation / Identity
Overvoltage Installation Category Test instruments, equipment, and their accessories are required to be rated for circuits and equipment to which they will be connected. The Overvoltage Installation Category is one of the ratings to be considered for test equipment. ✔✔True
Only qualified persons are permitted to perform tasks such as testing, troubleshooting, and voltage measuring within the? boundary of energized electrical conductors or circuit parts operating at 50 volts or more or where an electrical hazard exists. ✔✔Limited approach
