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1. Underground service conductors that are not encased in concrete and that are buried 18 inches or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least _____ inches above the underground installation.

10

14

13

12

Question 1 of 25

2. Continuous loads are loads that are expected to run for how many hours?

3

2

5

1

Question 2 of 25

3. Conductors, including splices and taps, shall not fill gutters more than ______ percent of it's area.

77 percent

74 percent

75 percent

76 percent

Question 3 of 25

4. Over head spans of open conductors and open multi-conductor shall be ________ over residential property and driveways where the voltage does not exceed 300 volts to ground.

10 feet

11 feet

13 feet

12 feet

Question 4 of 25

5. Show windows must be calculated either at 200 volt-amps per _________ of show window, or the unit load per outlet as required in other provisions of article 220.14.

2'

3'

4'

1'

Question 5 of 25

6. Why is electrical continuity required for metallic conduit?

To establish an effective ground-fault path and facilitate the operation of the overcurrent protective device.

To reduce electrolysis.

To reduce voltage drop.

To limit galvanic corrosion.

Question 6 of 25

7. A grounded conductor is what color?

Green/Yellow

Bare

Green

White

Question 7 of 25

8. If a branch circuit served by 12 AWG conductors is protected by a 15-ampere circuit breaker, what kind of rating does it have?

13 amperes

14 amperes

15 amperes

16 amperes

Question 8 of 25

9. What is the maximum standard size over current protection device to protect an installed 40-gallon electric water heater with a nameplate rating of 4,500 watts at 240 volts, single phase?

28 amperes

29 amperes

31 amperes

30 amperes

Question 9 of 25

10. True or false: It is permissible to use a metal pole supporting a sign cabinet or sign system to enclose the supply conductors.

True

False

Question 10 of 25

11. Overhead service-drop conductors shall not be smaller than ________ copper.

2 AWG

8 AWG

10 AWG

6 AWG

Question 11 of 25

12. For installations consisting of not more than two 2-wire branch circuits, the feeder or branch - circuit disconnecting means shall have a rating of not less than __________.

30 amperes

40 amperes

15 amperes

20 amperes

Question 12 of 25

13. The total rating of utilization equipment fastened in place shall not exceed ____ percent of the 15 or 20 ampere branch-circuit rating.

50

60

80

100

Question 13 of 25

14. Unless they are within _______ of the wall, receptacle outlets in floors may not be counted as a part of the minimum required number of receptacle outlets.

1-1/2 feet

3-1/2 feet

4-1/2 feet

2-1/2 feet

Question 14 of 25

15. For track lightning in other than dwelling units or guest rooms of hotels or motels, an additional load of ________ volt-amperes shall be included for every 2 feet of lighting track or fraction thereof.

350

150

50

250

Question 15 of 25

16. What is the maximum square footage an office building could have with a calculated lighting load of 24,500 VA.

5000 sq. ft.

6000 sq. ft

7000 sq. ft.

8000 sq. ft.

Question 16 of 25

17. If a warehouse area is 10,000 square feet for storage and uses high pressure sodium lighting, what is the maximum lighting load?

2765

46

2625

3625

Question 17 of 25

18. Overhead service -drop conductors shall have a vertical clearance of not less than _______ feet above the roof surface.

6

8

5

4

Question 18 of 25

19. Loads for convenience receptacle outlets shall be computed at not less than _______ volt-amperes for each single for each multiple receptacle on one yoke.

150

160

170

180

Question 19 of 25

20. Type MC cables containing four or fewer conductors, sized no larger than 10 AWG, shall be secured within ________ of every box, cabinet, fitting, or other cable termination.

12 inches

13 inches

11 inches

10 inches

Question 20 of 25

21. For a dwelling with 2,600 square feet of habitable space, what is the required minimum number of 115-ampere, 120-volt, general lighting branch circuits?

5

8

2

3

Question 21 of 25

22. In dwelling units, hallways of _______ feet or more in length shall have at least one receptacle.

7

10

11

9

Question 22 of 25

23. The load for household electric clothes dryers in a dwelling unit(s) shall be _______ watts (volt-amperes) or the nameplate rating, whichever is larger, for each dryer served.

5000

6000

4000

7000

Question 23 of 25

24. True or False: It is permissible to attach, strap, or tape power-limited fire alarm cables to the exterior of a conduit or raceway.

False

True

Question 24 of 25

25. Where a cable- or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than ______ inches from the nearest edge of the wood member.

1-1/5

1-1/6

1-1/4

1-1/3

Question 25 of 25

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