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26205-11 Pull and Junction Boxes

1. For a straight pull, the minimum length for a pull box with two 1" conduits and one 4" conduit on one wall and two 1" conduits and one 4" conduit entering the opposite wall is ________ (assume the conductor size is No. 4 AWG or larger, but operating at less than 600V).

Question 1 of 20

2. Which of the following square junction boxes must be used if there is one 6" conduit and two 4" conduits entering on one side of the box and exiting at a 90° angle on another side of the box (assume the conductor size is No. 4 AWG or larger, but operating at less than 600V)?

Question 2 of 20

3. What is the least protective type of junction box that can be used in chemical plants?

Question 3 of 20

4. For a pull box housing shielded conductors carrying over 600V, the distance between a conductor entry and exit must be how much greater than the outside diameter of the conductor?

Question 4 of 20

5. NEMA and IP classify pull and junction boxes according to the ________.

Question 5 of 20

6. Which type of conduit body has a raised cover and allows right angle bends where splices, taps, and pulls are needed in a weatherproof chamber?

Question 6 of 20

7. To discourage unauthorized entry, handhole covers must be ________.

Question 7 of 20

8. Which type of conduit body does not provide a change in direction but may be used as a pulling point in a conduit run that has bends totaling more than 360°?

Question 8 of 20

9. The abbreviation for an entrance ell (elbow) is ________.

Question 9 of 20

10. The NEC® requires that handholes must always be ________.

Question 10 of 20

11. Which of the following conduit bodies has a single cover opening on both sides?

Question 11 of 20

12. Which of the following are used to protect conductors from being damaged by the sharp edges of the threaded conduit end?

Question 12 of 20

13. For an angle or U pull, the length of a pull box housing shielded conductors carrying over 600V must be how much greater than the outside diameter of the largest shielded conductor entering the box?

Question 13 of 20

14. The second number in the IP classification system designates the degree of protection against ________.

Question 14 of 20

15. What type of fitting should be used for EMT in a wet location?

Question 15 of 20

16. What is the minimum length of a straight pull box for a system under 600V if the largest conduit is 5"?

Question 16 of 20

17. Which of the following can be used as an inexpensive alternative to a tee conduit body when running EMT?

Question 17 of 20

18. Which of the following describes a Myers hub?

Question 18 of 20

19. Which of the following are defined by the NEC® as separate portions of a conduit that provide access through a removable cover to the interior of the system at a junction of two or more sections?

Question 19 of 20

20. Boxes must be marked with the words "DANGER — HIGH VOLTAGE — KEEP OUT" if they house conductors over ________.

Question 20 of 20