Arc flash hazard Study guides, Class notes & Summaries

When placing a LOTO on a system, how many locks should be applied? - As many locks as their are personnel working on the system. A ladder must be able to support ____ times the weight of the expected load - 3.3 It is acceptable to enter into a confined space without an attendant, but only if all other precautions and PPE are taken. - False A defective air pressure gauge on the supply air of a dry pipe system is considered a _____ - Critical deficiency When taking a sprinkler system out of...

CWB Module Exam Questions With 100% Correct Answers Latest Update 2024 Graded A+. Creating a safe working environment is strictly the responsibility of the employer? - Correct Answer-False, it the the joint responsibility of the employer and employee. WHMIS stands for: a) Workers Health Monitoring System b) Workplace Hazardous Materials Information System c) Workers for a Healthy Manufacturing Industry Society - Correct Answer-b) Workplace Hazardous Materials Information System What are ...

True or False: A mandatory rule can have exceptions. False True or False: Permissive rules are allowed but not required to be performed true What does NEC stand for? National Electrical Code What do chapters 1-4 of the NEC cover General electric installations What do chapters 5-7 of the NEC cover Special equipment and loctations What does chapter 8 of the NEC cover Communication systems What does chapter 9 of the NEC cover tables What is an...

5/1 NFPA70E Final Study Set Exam with Correct and Verified Answers 2024 NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters; 17 informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction. Chapter 1 is divided into ? articles. - CORRECT ANSWER-3/5 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. - CORRECT ANSWER-...

Arc-Flash Basics What is an arc-flash hazard? According to the National Fire Protection Association (NFPA) 70E: Standard for Electrical Safety in the Workplace, an arc-lash hazard is “a source of possible injury or damage to health associated with the release of energy caused by an electrical arc.” In an arc-lash event, a lashover of electric current leaves its intended path and travels through the air from one conductor to another or to ground. During such an event, the air gets...

The basic methodology of the fire investigation should rely on the use of a ______________________ and attention to all relevant details. a. systematic approach b. approximation approach c. methodology approach d. general approach - ANSWER-a. systematic approach With few exceptions, the proper methodolgy for a fire or explosion investigation is to first _____________________ then investigate the cause, circumstances, conditions, or agencies that brought the ignition source, fuel, and ox...

NFPA 70E ACTUAL EXAM 2024 WITH 100% CORRECT ANSWERS Arrangement of 70E ANS Introduction (Article 90)Chapter 1 Safety Related Work Practices Chapter 2 Safety Related Maintenance Requirements Chapter 3 Safety Requirements for Special EquipmentAnnexes (Article 350) 2. Arc Flash Hazard ANS A dangerous condition associated with the possible releaseof energy caused by an electric arc 3. Arc Rating ANS The value attributed to materials that describes their performance toexposure to an electr...

NFPA 70E FINAL ACTUAL EXAM 2024 WITH 100% CORRECT ANSWERS True or False: A mandatory rule can have exceptions. False True or False: Permissive rules are allowed but not required to be performed true What does NEC stand for? National Electrical Code What do chapters 1-4 of the NEC cover General electric installations What do chapters 5-7 of the NEC cover Special equipment and loctations What does chapter 8 of the NEC cover Communication systems What does chapter 9 of the NEC cover tables What is...

NFPA70 Study Guide 2024 Questions and Answers Latest (2024 / 2025) (Verified Answers by Expert) What is an Arc Flash? ANS A short circuit that jumps through the air from oneexposed conductor to another. 2. What makes an Ar Flash dangerous? ANS Temperatures of up to 35k' F, shrapnel,molten metal, chocks, shockwave (2k lbs/foot^2), soud (140 dB), burn injuries. 3. Hazard/Risk Category 1 contains PPE requirements.What are they? ANS hard-hat, safety glasses, hearing protection, heavy duty lea...

5/1 NFPA70E Final Exam QUESTIONS WITH 100% CORRECT ANSWERS NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters; 17 informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction. Chapter 1 is divided into ? articles. - answer3/5 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. - answer1976/OSHA The 1995 edition of NFPA ...