1. Which of the following NEC sections provides the requirement for the concept that the requirements for grounding in Chapter 5 through Chapter 7 can modify or supple- ment the rules in Chapter 1 through Chapter 4? a. 517.17 b. 250.118 c. 250.3 d. 90.3 2. Which of the following statements is correct about the style in which the NEC is written? a. It is generally written in "performance" style that states the safety goals to be achieved. b. It is generally written in a "legal" style so that the installer will be more likely to comply with the requirements. c. It is generally written in "prescriptive" style that states how the installation must be made. d. It is written in neither "performance" nor "prescriptive" style. 3. Which of the following statements about the reasons for grounding an electrical system is not true? a. To limit the overvoltage imposed by lightning b. To limit the overvoltage from contact with utility high-voltage lines c. To provide a low-impedance ground-fault return path d. To stabilize the voltage of the system to earth during normal operation
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The requirement for grounding in Chapter 5 through Chapter 7 modifying or supplementing the rules in Chapter 1 through Chapter 4 is provided in NEC section 250.118. Therefore, the correct answer is b. 250.118. Show more…
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