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26207-11 Cable Tray

1. Except for Type MC, all multiconductor cables over 600V must be separated by a solid divider from cables rated under ________.

Question 1 of 25

2. Given a cable tray that is available in standard widths of 6, 12, 18, 24, and 36 inches, what is the minimum width of a 3-inch deep cable tray used for the following cables that are all 4/0 or larger: two with 1.5-inch diameter; three with 1.75-inch diameter; and two with 2.5-inch diameter?

Question 2 of 25

3. Which of the following provides a curved surface for the cable to follow as it passes from the tray?

Question 3 of 25

4. What kind of mounting is often used in tunnels and other underground installations where equipment is separated by long distances?

Question 4 of 25

5. A cable hanger elbow is a ________.

Question 5 of 25

6. Which of the following consists of two parallel channels connected by rungs?

Question 6 of 25

7. The details of supports and hangers for a cable tray system installation are usually worked out by the ________.

Question 7 of 25

8. When installing single conductor cables in tray systems with conductors size 4/0 and larger, they must be ________.

Question 8 of 25

9. The method of supporting cable trays using threaded rods and hanger clamps is known as ________.

Question 9 of 25

10. Electrical conductors may be installed in ________.

Question 10 of 25

11. Which if the following rules must be followed if all of the cables in a tray are smaller than 4/0?

Question 11 of 25

12. The most desirable method of exiting cable from a cable tray is ________.

Question 12 of 25

13. An NEC® requirement for grounding and bonding cable tray installations is ________.

Question 13 of 25

14. The maximum pull that should be exerted on cables being pulled in tray when using a basket grip is ________.

Question 14 of 25

15. Isolate cables of different voltages using ________.

Question 15 of 25

16. In common practice, engineering firms show the layout of the cable tray system in ________.

Question 16 of 25

17. Which of the following occurs when the load applied causes the fibers on the tension side of the rung to stretch and permanently deform?

Question 17 of 25

18. The installation of cable tray is covered in ________.

Question 18 of 25

19. A dropout plate can be used when the cable exits the tray ________.

Question 19 of 25

20. Symbols used to show cable tray systems on working drawings are explained in the ________.

Question 20 of 25

21. In short vertical runs, the cables are usually supported by ________.

Question 21 of 25

22. Maintain grounding continuity in a cable tray system by connecting the motor to the cable tray system using ________.

Question 22 of 25

23. What type of fittings are used to build an offset in a cable tray system?

Question 23 of 25

24. Which of the following statements is true regarding cable splices in cable trays?

Question 24 of 25

25. Which of the following are used on cable trays to protect the cable insulation from direct sunlight?

Question 25 of 25


 

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