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1. If each unit in a 12 unit condo had an 8kW electric range, applying the optional method of calculation for multifamily dwellings, what would the calculated demand load be on the ungrounded service entrance conductors for the electric ranges?

49.2kW

39.36kW

96kW

31.48kW

Question 1 of 25

2. Live parts of electrical equipment operating at ________ nominal shall be guarded against accidental contact.

50 to 1000 V

12 to 24 V

12 to 50 V

300 to 600 V

Question 2 of 25

3. In walls or ceilings with a surface of non-combustible material, boxes shall be installed so that the front edge of the box will not be set back of the finished surface more than ____ inch.

1/2

1/3

1/5

1/4

Question 3 of 25

4. In no case shall both branch and feeder circuits exceed what percentage of voltage drop?

10

4

5

3

Question 4 of 25

5. For a one-family dwelling, the feeder disconnecting means shall have a rating of not less than ______, 3-wire.

90 amperes

100 amperes

200 amperes

80 amperes

Question 5 of 25

6. In regard to a commercial building, where a service-entrance conduit having a length of six (6) feet contains four (4) size 2 AWG THWN insulated copper current-carrying conductors, each of the conductors have an allowable ampacity of _____.

110 amperes

92 amperes

100 amperes

115 amperes

Question 6 of 25

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

60

100

80

50

Question 7 of 25

8. Outlet boxes that do not enclose devices or utilization equipment shall have a minimum internal depth of _________ inch.

1/5

1/3

1/4

1/2

Question 8 of 25

9. A bonding jumper not smaller than _______ AWG copper or equivalent must be connected between the radio and television equipment grounding electrode and the power grounding electrode system when they are separate.

8 AWG

6 AWG

10 AWG

4 AWG

Question 9 of 25

10. What is the minimum rating for a service disconnecting means when supplied with a 120/240-volt, 3-wire, single phase service for a one- family dwelling?

90 amperes

100 amperes

200 amperes

300 amperes

Question 10 of 25

11. Equipment used outdoors and exposed to rain, snow and sleet must be type _____.

3 and

3S and 3X

3X and 12K

4X and 3R

Question 11 of 25

12. At least ________ of free conductor shall be left at each outlet, junction, and switch point for splices or the connections of luminaries (fixtures) or devices.

7 inches

4 inches

6 inches

5 inches

Question 12 of 25

13. An autotransformer that supplies a 480-volt circuit from a 600-volt system is not required to have a grounded conductor that is electrically connected between the supplying system and the circuit supplied where the autotransformer:

is located at least 8 ft above the floor or working surface.

is in an industrial occupancy and only qualified persons will service the installation.

is connected to a three-phase open delta arrangement.

has no exposed noncurrent-carrying metal parts.

Question 13 of 25

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

True

False

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%

100%

150%

125%

Question 15 of 25

16. A required 125-volt, 15- and 20-ampere receptacles in dwelling units shall be installed in any wall space _______ feet or more in width.

4

3

2

5

Question 16 of 25

17. Receptacles in health care facilities that have isolated grounding terminals as described in 250.146(D) are allowed in the vicinity of patient care areas.

True

False

Question 17 of 25

18. What is the maximum number of disconnecting means per supply?

6

8

4

1

Question 18 of 25

19. What is the minimum size conductor for 20A branch circuit?

12

18

14

10

Question 19 of 25

20. In dwelling units, receptacle outlets installed for countertop surfaces, must be located above, but NOT more than _____ above the countertop or work surface.

18"

24

20"

12"

Question 20 of 25

21. Lighting systems for fountains, pools, spas, and similar locations must be installed _______ or more horizontally from the nearest water's edge unless Article 680 permits otherwise.

3 m

10 m

5 m

7 m

Question 21 of 25

22. What is the maximum cross-sectional value that conduit under 24 inches long may be filled?

70 %

50%

60 %

80 %

Question 22 of 25

23. For a one-family dwelling, the feeder disconnecting means shall have a rating of not less than _________ amperes, 3-wire.

80

90

100

200

Question 23 of 25

24. 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.

12

11

10

13

Question 24 of 25

25. For equipment rated 1200 amperes or more and over 6 feet wide that contain over-current devices, there shall be one entrance to and egress from the required working space mot less than _______ wide at each end of the working space.

20 inches

30 inches

24 inches

34 inches

Question 25 of 25

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