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NFPA70E Study Guide Questions with correct answers., Exams of Nursing

NFPA70E Study Guide Questions with correct answers.

Typology: Exams

2024/2025

Available from 10/28/2024

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Download NFPA70E Study Guide Questions with correct answers. and more Exams Nursing in PDF only on Docsity! NFPA70E Study Guide Questions with correct answers What is an Arc Flash? - correct answer -A short circuit that jumps through the air from one exposed conductor to another. What makes an Ar Flash dangerous? - correct answer -Temperatures of up to 35k' F, shrapnel, molten metal, chocks, shockwave (2k lbs/foot^2), soud (140 dB), burn injuries. Hazard/Risk Category 1 contains PPE requirements. What are they? - correct answer -hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather work shoes. What proper electrical PPE protect you from? - correct answer -burns, electrical shock and small shrapnel. What is PPE? - correct answer -Personal Protective Equipment If you are qualified to work on low-voltage equipment, what is the cut-off point where you are not allowed to perform electrical tasks at higher voltages? - correct answer -50 - 600V What is the most important part of creating an electrically safe work condition - correct answer -Test for Voltage Once an electrically safe work condition is created, shock and arc flash protection are no longer necessary. (T/F) - correct answer -True The Arc Flash Protection Boundary is the distance from an arc source where an unprotected worker will receive first-degree burns. (T/F). - correct answer -False When dressing in layers for arc flash protection, non-FR material can be counted toward your total level of protection. (T/F). - correct answer -False NFPA70E Study Guide When dressing in layers for arc flash protection, non-FR material can be counted toward your total level of protection. (T/F). - correct answer -False Crossing the _________ ___________ ___________ is the equivalent of performing live work. - correct answer -Prohibited Approach Boundary For energized circuits, escorted unqualified persons are allowed within which Hazard Protection Approach Boundaries? - correct answer -Limited Approach Boundary 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? - correct answer -Requirements associated with flash protection boundary must be followed. Only qualified persons shall perform tasks such as testing and voltage measuring within the limited approach boundary of energized electrical conductors operating at 50 volts or more or where an electrical hazard exists. (T/F). - correct answer -True What is the time in which a GFCI is required to open a circuit in the event of a fault? - correct answer - 1/40th of a second Which Hazard Risk Category requires clothing that provides a minimum of 25 calories/cm^2 arc-rated protection? - correct answer -Category III What electrial Hazards are NOT covered in NFPA 70E? - correct answer -Lightning strikes Hazard Risk Category Two requires a minimum of a 40 cal/cm^2 Arc Rated Clothing. (T/F) - correct answer -False For work under Hazard/Risk Categories 1, 2, 3 and 4, which of the following PPE is always required? - correct answer -Hardhat NFPA70E Study Guide