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TPC 205.1 ELECTRICAL SAFETY AND PROTECTION FINAL PAPER UPDATED COMPLETE QUESTIONS AND CORRECT ANSWERS

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TPC 205.1 ELECTRICAL SAFETY AND PROTECTION FINAL PAPER UPDATED COMPLETE QUESTIONS AND CORRECT ANSWERS

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TPC 205.1 ELECTRICAL SAFETY AND
PROTECTION FINAL PAPER UPDATED
COMPLETE QUESTIONS AND CORRECT
ANSWERS

●● What is the minimum oxygen level before the atmosphere is
considered oxygen deficient?
Answer: 19.5%


●● What is the maximum oxygen level before the atmosphere is
considered oxygen enriched?
Answer: 23.5%


●● What is the first step in establishing an electrically safe work
condition?
Answer: Identify all power sources


●● What must be applied after isolating equipment?
Answer: Lockout/Tagout (LOTO)


●● What verifies the absence of voltage?
Answer: An adequately rated test instrument

, ●● What sequence is used to verify a meter?
Answer: Live-Dead-Live


●● What NFPA standard covers electrical safety?
Answer: NFPA 70E


●● What OSHA regulation covers permit-required confined spaces?
Answer: 29 CFR 1910.146


●● How far must a portable ladder extend above a landing?
Answer: 3 feet


●● What gas creates an explosion hazard in battery rooms?
Answer: Hydrogen


●● What should be available in battery rooms?
Answer: Eyewash station


●● What type of PPE protects from arc flash?
Answer: Arc-rated clothing

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