Arc rating Study guides, Class notes & Summaries

NETA III 2023-2024 Exam Questions with Correct Answers The alternate source for emergency systems are required to be equipped with ground-fault protection of equipment. - ANSWER False Which ANSI/IEEE standard covers SF6 circuit breakers? - ANSWER C37.04 You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3 measures 41.9 microhms, and H3-H1 measures 84.0 microhms. What can you conclud...

NETA III 2024 QUESTIONS WITH CORRECT SOLUTIONS The alternate source for emergency systems are required to be equipped with ground-fault protection of equipment. -Answer-False Which ANSI/IEEE standard covers SF6 circuit breakers? -Answer-C37.04 You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3 measures 41.9 microhms, and H3- H1 measures 84.0 microhms. What can you conclude from these readings...

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...

What is PPE Category 1? - correct answerArc-Rated clothing, Minimum Arc Rating of Arc 4 cal/cm2 arc-rated long sleeve shirt and pants or overall Parshall Flume Measurement point? 1.2 FT Water Height 20.8xH at measurement point - correct answerPossible answer:72,607 MGD Absoulte Pressure Gauge? What is True? - correct answerPossible answer: Read more accurate or 14.7 PSI higher Flow meter that uses electrodes is? - correct answerMagnetic Flow Meters What is the resister color co...

Absolute Temperature. CORRECT ANSWER A temperature measured in Kelvins (K) or Rankines (R). Accelerant. CORRECT ANSWER A fuel or oxidizer, often an ignitable liquid, intentionally used to initiate a fire or increase the rate of growth or spread of fire. Accident. CORRECT ANSWER An unplanned event that interrupts an activity and sometimes causes injury or damage or a chance occurrence arising from unknown causes; an unexpected happening due to carelessness, ignorance, and the like. Ambie...

Worn motor bearings are most to result in a(n)___. continuous overload A high-level short circuit current may exceed ___. 50,000A` Accidental contact between an electrical conductor and a grounded enclosure is called a(n)___. ground fault Most arcing faults begin as ___. ground faults A plug fuse with a hexagonal cap has a maximum amperage rating of ___. 15A Under normal operation and at currents near its ampere rating, a fuse operates as a ___. conductor...

Combustible Liquid - Correct answer-A liquid with a flash point ABOVE 100F 12.5 - Correct answer-If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? 1000 - Correct answer-If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P) = current (I) x voltage (V) Watts = amps x volts 1987 - Correct answer-The y...

NAFI CFEI OFFICIAL Exam Graded A+ CODE A standard that is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently of other codes and standards. GUIDE A document that is advisory or informative in nature and that contains only non mandatory provision. This may contain mandatory statements such as when it can be used, but the document as a whole is not suitable for adoption into law. Recommended Practice A document that...

NFPA 70E Exam Questions and Answers 100% CorrectNFPA 70E Exam Questions and Answers 100% CorrectNFPA 70E Exam Questions and Answers 100% CorrectArc Flash Hazard - ANSWER-A dangerous condition, possible release of energy caused by an electric arc Arc Rating - ANSWER-The arc rating is expressed in cal per cm squared ^2 Informational Note No. 1: Arc-rated clothing or equipment indicates that it has been tested for exposure to an electric arc

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. - 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. - ANSWER 1976/OSHA The 1995 edition of NFPA 70E included the concepts of ? and the establishment of an ...