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26209-11 Grounding and Bonding

1. Ultimately, the ground fault is cleared when the ________.

Question 1 of 35

2. The key to successfully clearing ground fault currents is ________.

Question 2 of 35

3. The maximum value of a short circuit current from line-to-ground ________.

Question 3 of 35

4. Rod, pipe, and plate electrodes must have a resistance to ground of at least ________.

Question 4 of 35

5. To be effective, a grounding system must limit the voltage on the electrical system and protect it from ________.

Question 5 of 35

6. A separately derived system is a premises wiring system that is ________.

Question 6 of 35

7. Which of the following is true of the neutral in a grounded system?

Question 7 of 35

8. The size of the equipment grounding conductor (EGC) is determined by the ________.

Question 8 of 35

9. A short circuit is a conducting connection between ________.

Question 9 of 35

10. The bonding jumper for multiple disconnecting means is located ________.

Question 10 of 35

11. If Single-Gang Nail-On non-metallic boxes are used with NM cable, which of the following is true?

Question 11 of 35

12. Which of the following must have at least 2 square feet of surface area exposed to the surrounding earth?

Question 12 of 35

13. When a ground rod is installed, the top of the rod must be positioned ________.

Question 13 of 35

14. If the neutral in a grounded system is not needed for voltage requirements, it ________.

Question 14 of 35

15. Where there is a requirement to add a second grounding electrode, the two electrodes must be spaced at least ________.

Question 15 of 35

16. System grounding relates to the ________.

Question 16 of 35

17. Plate electrodes made of copper must be at least ________.

Question 17 of 35

18. The minimum diameter of galvanized pipe allowed for a grounding electrode is ________.

Question 18 of 35

19. The continuity between service equipment and enclosures is maintained by ________.

Question 19 of 35

20. Which of the following is an NEC® requirement for grounding and bonding?

Question 20 of 35

21. Which of the following describes a ground fault?

Question 21 of 35

22. Grounding requirements for AC systems are contained in ________.

Question 22 of 35

23. Which transformer-supplied system must be grounded if the supply voltage to the transformer exceeds 150V?

Question 23 of 35

24. In a separately derived system, the equipment bonding jumper connects ________.

Question 24 of 35

25. Which of the following describes bonding?

Question 25 of 35

26. The requirements for grounding of services are located in ________.

Question 26 of 35

27. Where a main bonding jumper is required by the NEC®, the jumper cannot be less than what percentage of the area of the largest phase conductor?

Question 27 of 35

28. Which of the following must be connected to the neutral terminal bus of a main distribution panel?

Question 28 of 35

29. Equipment grounding refers to connecting the normally noncurrent-carrying metal parts of equipment to the system grounded conductor and/or ________.

Question 29 of 35

30. A ground test utilizing an earth ground resistance tester is known as the ________.

Question 30 of 35

31. The minimum length allowed for driven ground rods under normal conditions is ________.

Question 31 of 35

32. Which of the following is used to secure equipment grounding conductors to metallic outlet boxes?

Question 32 of 35

33. An acceptable grounding electrode is a(n) ________.

Question 33 of 35

34. Which type of system is required to be grounded?

Question 34 of 35

35. A ground ring consisting of 20' of No. 2 bare copper must be buried no less than ________.

Question 35 of 35