What is arc flash - Study guides, Class notes & Summaries

A bulkhead mounted disconnect for a workbench shall be located 48 to ____ inches above the deck. Ans: 54 For naval applications, voltages greater than or equal to _____ volts are considered high voltage. Ans: 1000 The resistance of the human body is typically around _____ ohms. Ans: 500 _____ mA - shock is felt. Ans: 1 _____ mA - a person may be unable to let go. Ans: 10 _____ mA - shock may be fatal if it lasts for one second or more. Ans: 100 PPE is required for energized work ...

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...

CHAPTER Version A I. True or _________ 1. _________ 2. _________ 3. _________ 4. _________ 5. known as suppliers. II. Write down the letter of the answer that best answers the question or completes the statement. _________ 6. The term VFR travel refers to: A. Visiting Friends and Relatives B. Very Frequent Reservations C. Very Favorable Restrictions D. Trick question: VFR refers to nothing _________ 7. Which of the following is not a sector of the travel industry? A. Corporate t...

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...

CWB Welding Inspection Test Questions With 100% Correct Answers Latest Update 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 Wh...

CWB Module 1 Questions With 100% Correct Answers Latest Update Graded A+. True or False? 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 Wh...

NFPA70 Study Guide Questions with Correct Answers What is an Arc Flash? - Answer-A short circuit that jumps through the air from one exposed conductor to another. What makes an Ar Flash dangerous? - 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? - Answer-hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather work shoes. ...

What is an Arc Flash? - ANSWER-A short circuit that jumps through the air from one exposed conductor to another. What makes an Ar Flash dangerous? - 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? - ANSWER-hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather work

What is an Arc Flash? - ANSWER A short circuit that jumps through the air from one exposed conductor to another. What makes an Ar Flash dangerous? - 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? - ANSWER hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather work shoes. What proper electrical PPE protect you from? - AN...

What is the purpose of the Occupational Safety and Health Act? - Answer-The ensure the establishment of safe and healthy working environments. Electrical Safety in the Workplace p.5 The NFPA 70E has a supplemental section which contains... - Answer-NEC articles Electrical Safety in the Workplace p.7 What is an explosive event that occurs with an arc flash? - Answer-an arc blast Electrical Safety in the Workplace p.8 The NFPA70E applies to any workplace that had the potential for electrica...