Download NFPA 70E Exam Guide with Verified Answers and more Exams Advanced Education in PDF only on Docsity! NFPA 70E Exam Guide with Verified Answers 2. For exposed 480 VAC energized conductors and using NFPA 70E Table 130.2(C) or the Shock Protection Boundaries and PPE Fermilab Summary table for NFPA 70E, the Restricted Approach Boundary for shock protection is a. 1 Inch b. 7 Inches c. 1 Foot d. 3 Feet 6 Inches - CORRECT ANSWER-c 3. For energized circuits, escorted unqualified persons are allowed within which Shock Protection Approach Boundaries? a. Restricted Approach Boundary b. Limited and Restricted Approach Boundaries c. Limited Approach Boundary d. Prohibited Approach Boundary - CORRECT ANSWER-c 6. If an electrical circuit that normally operates above 50 volts has been de-energized but not tested to verify that the circuit is in an electrically safe work condition, which of the following apply? a. Requirements associated with Shock Protection Boundaries must be followed b. Requirements associated with the Flash Protection Boundary must be followed c. NFPA 70E does not require a written Energized Electrical Work Permit for performing LOTO voltage verification testing d. All of the above apply - CORRECT ANSWER-d 8. Voltmeter testing of a 480 VAC 3 Phase Circuit to verify that the circuit is OFF typically involves a. 3 measurements of phase to phase voltage b. 3 measurements of phase to ground voltage c. 3 measurements of phase to neutral voltage d. All of the above measurements are necessary - CORRECT ANSWER-d 9. What is the maximum use voltage of Class 0 rubber insulating gloves? a. 500 Volts AC b. 1,000 Volts AC c. 7,500 Volta AC d. 26,500 Volts AC e. 36,000 Volts AC - CORRECT ANSWER-b 10. A primary factor relating to serious arc-flash is a. High voltage b. Available fault current c. Presence of supervisors during the arc-flash event d. Ambient temperature - CORRECT ANSWER-b 11. When performing electrical work that involves exposure to circuit parts or wiring that are either energized or have not been tested and found to be de-energized, it is most important to: a. Understand and protect yourself from the shock hazard b. Understand and protect yourself from the arc-flash hazard c. Both a. and b. d. Get the work done in the allotted time - CORRECT ANSWER-c 12. A person who has received electrical safety training, has skills and knowledge related to the construction and operation of electrical equipment or a specific work method, and can recognize and avoid the electrical hazards that might be present with respect to that equipment or work method is a. Everyone at Fermilab, home of the world's finest particle accelerator b. A knowledgeable person c. A qualified person d. A supervisor - CORRECT ANSWER-c 14. You are an electrician accessing an energized 120/208 VAC panelboard to install a circuit breaker. The circuit is fed from a transformer less that 125 kVA. According to Simplified Guidance for Electrical Work on Fermilab AC Power Distribution Equipment, the minimum indicated Hazard/Risk Category is a. 3 b. 0 c. 1 d. 2 - CORRECT ANSWER-b 17. In calculating your exposure to a potential arc-flash, determining factors as to the level of Arc-Rated clothing and PPE that you must wear is/are dependent on a. The available fault current b. Your distance from the potential arc-flash c. The duration of the arc-flash d. Only a. and b.
