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26308-11 Commercial Electrical Services

1. The service grounding conductors are usually routed to and bonded in the ________.

Question 1 of 25

2. The NEC® requires that all grounding electrodes be ________.

Question 2 of 25

3. NEC Article 376 contains definitions for ________.

Question 3 of 25

4. The installation of the grounding electrode system is guided by ________.

Question 4 of 25

5. Equipment consisting of busbars mounted inside an enclosure that provides a means of tapping the service-entrance conductors is called a ________.

Question 5 of 25

6. The two basic types of current transformers are the doughnut and the ________.

Question 6 of 25

7. A group of CTs will normally be used on services of ________.

Question 7 of 25

8. A service that is supplied from overhead is known as a service ________.

Question 8 of 25

9. The NEC® requires that parallel conductors must be terminated in ________.

Question 9 of 25

10. When terminating conductors with mechanical lugs it is important to ________.

Question 10 of 25

11. A self-contained meter installation refers to ________.

Question 11 of 25

12. The maximum service voltage allowed for cold sequence metering is ________.

Question 12 of 25

13. NEC Section 230.54(F. requires the installation of what at the weatherheads?

Question 13 of 25

14. The requirements for the location and wiring of CTs and CT cabinets are set by the ________.

Question 14 of 25

15. The requirements for grounding and bonding electric services can be found in ________.

Question 15 of 25

16. The most common electrical service for small commercial or other small loads is ________.

Question 16 of 25

17. When the service is large enough to require numerous branch circuit panelboards, overcurrent protection for individual panel feeders is provided by a ________.

Question 17 of 25

18. The conductor or busbar with a higher voltage to ground in a delta-connected four-wire system is also known as the ________.

Question 18 of 25

19. The NEC® requirements for the service disconnecting means include that it ________.

Question 19 of 25

20. What provides a separation between the service drop conductors and other metal components?

Question 20 of 25

21. To provide flexibility in a commercial building before the number of tenants is know, the parallel service-entrance conductors should terminate in a ________.

Question 21 of 25

22. The amount of exterior wall space available to mount service equipment can be found on the ________.

Question 22 of 25

23. An industrial plant using switchgear is most likely to require ________.

Question 23 of 25

24. The location of distribution and branch circuit panelboards are shown on the ________.

Question 24 of 25

25. In a commercial electric service, which component distributes electrical energy through branch circuit breakers?

Question 25 of 25


 

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