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1. The ampacity of types NM, NMC, and NMS cable should be determined in accordance with the _______ ( 140 degree F ) conductor temperature rating.

60 degree C

70 degree C

40 degree C

50 degree C

Question 1 of 25

2. An insulated conductor that is intended for use as a grounded conductor where contained in a flexible cord shall be identified by what color?

Brown or Yellow

White or Gray

Black or Orange

Red or Blue

Question 2 of 25

3. Which of the following is not a standard ampere rating for a circuit breaker?

60

45

75

70

Question 3 of 25

4. In industrial establishments only, when a 200-ampere rated busway is tapped from a 600-ampere rated busway, what is the maximum permitted length of the 200-ampere busway where overcurrent protection is not provided for the 200-ampere busway?

100 feet

75 feet

125 feet

50 feet

Question 4 of 25

5. When using rod and pipe electrodes, where rock bottom is encountered, he electrode shall be driven at an oblique angle not to exceed ________ from the vertical.

45 degrees

30 degrees

40 degrees

35 degrees

Question 5 of 25

6. 277 Volt lighting in a tunnel is required to no be less than _____.

14'

20'

16'

18'

Question 6 of 25

7. A general - use receptacle outlet must be provided in any dwelling unit bedroom wall that is at least ______ wide.

6 feet

3 feet

2 feet

5 feet

Question 7 of 25

8. If the AC load is 15,000va and the heating load is 20,000va which one is used when calculating total load?

AC

Both + 125%

Heating

Both

Question 8 of 25

9. Direct burial cables or conductors shall have a minimum cover of __________ to finishes grade.

30 inches

20 inches

24 inches

34 inches

Question 9 of 25

10. Fixtures wires shall not be smaller than ________ AWG.

18

16

12

14

Question 10 of 25

11. What is the minimum length, in feet, for rod and pipe ground electrodes made of specific materials?

6

8

10

7

Question 11 of 25

12. Service-entrance cables shall be supported by straps or other approved means within _______ inches of every service head, goose-neck, or connection to a raceway or enclosure.

13

9

10

12

Question 12 of 25

13. A single electrode consisting of a rod, pipe, or plate that does not have a resistance to ground of ________ or less shall be augmented by one additional electrode.

25 ohms

35 ohms

30 ohms

20 ohms

Question 13 of 25

14. What is the minimum clearance for communications wires and cables above all points of roofs above which they pass?

7 feet

8 feet

6 feet

9 feet

Question 14 of 25

15. What is the minimum percentage of the maximum current rating for PV system overcurrent devices, as calculated in 690.8(A)?

115%

125%

100%

150%

Question 15 of 25

16. Installation of rigid mental conduit (RMC) is required to be fastened within what minimum distance from a junction box, panel board, or cabinet, where structural members readily permit fastening?

2 feet

3 feet

5 feet

4 feet

Question 16 of 25

17. What size overcurrent protection device is required for a branch circuit with a continuous load of 80 amps with 75 degrees C terminals and 3 AWG cu THWN conductors?

125 amp

90 amp

150 amp

100 amp

Question 17 of 25

18. Cord and plug type equipment not fastened in place shall not exceed what percentage of the branch circuit ampere rating?

80

50

60

100

Question 18 of 25

19. For dwelling units, at least one receptacle outlet accessible at grade level and not more than ________ feet above grade shall be installed at the front and back of each dwelling.

2-1/2

6-1/2

7-1/2

3-1/2

Question 19 of 25

20. Where the service-entrance phase conductors are installed in parallel, in two or more raceways, the size of the grounded conductor in each raceway shall not be smaller than _______ AWG.

#1

2/0

1/0

#2

Question 20 of 25

21. Surface-mounted incandescent luminaries (fixtures) installed on the wall above the door or on the ceiling in clothes closets shall have a minimum clearance of ______ inches between the luminaire and the nearest point of storage.

10 inches

12 inches

13 inches

11 inches

Question 21 of 25

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

4

8

6

Question 22 of 25

23. 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.

1'

2'

3'

4'

Question 23 of 25

24. What is the minimum clearance over residential driveways of overhead spans of open conductors of up to 300 volts to ground.

11 feet

10 feet

15 feet

12 feet

Question 24 of 25

25. For a one-family dwelling and each unit of a two-family dwelling that is at grade level, at least ____ receptacle outlet(s) accessible while standing at grade level and located not more than ____ ft above grade shall be installed at the front and back of the dwelling.

one, 6-1/2

one, 5-1/2

two, 6-1/2

two, 5-1/2

Question 25 of 25

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