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1. What is the required circuit ampacity of a noncontinuous, single-phase load of 8.5kW at 277V?

17.32A

25.25A

30.69A

28.15A

Question 1 of 25

2. What is the load center length for a branch circuit with noncontinuous loads of 20A at 60' and 50A at 125'?

106.43'

136.56'

125.12'

157.95'

Question 2 of 25

3. What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at 208V?

26.85A

12.72A

62.16A

16.65A

Question 3 of 25

4. According to the NEC®, the ampacity of branch circuit conductors must be derated when there are more than how many current -carrying conductors in a raceway?

Three

Two

Five

Four

Question 4 of 25

5. The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter D is ________.

100A

60A

175A

125A

Question 5 of 25

6. What is the lighting load on a 120V circuit for six 100W incandescent lights and four fluorescent fixtures with a ballast rating of 1.5A, all operating continuously for 8 hours per day?

15.60A

11.20A

10.50A

13.75A

Question 6 of 25

7. What is the total ampacity for a 120V branch circuit consisting of four duplex receptacles rated noncontinuous duty and six duplex receptacles rated continuous duty?

18.75A

16.50A

15.00A

17.25A

Question 7 of 25

8. What is the load center distance for a 208V, four-wire, three-phase branch circuit with fixed noncontinuous loads from the source of 60A at 45', 40A at 60', 30A at 75', and 25A at 100'?

60.40'

71.72'

85.21'

63.55'

Question 8 of 25

9. The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be adjusted by ________.

10%

5%

50%

25%

Question 9 of 25

10. For resistance welders, the rating for the overcurrent protection device should not exceed what percentage of the primary current rating of the welder?

200%

300%

125%

185%

Question 10 of 25

11. The load for 10' of multi-outlet assembly used to supply several loads simultaneously is ________.

1,980VA

1,800VA

2,200VA

3,500VA

Question 11 of 25

12. What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit run through an ambient temperature of 38°C?

44A

45.5A

41A

50A

Question 12 of 25

13. Show window lighting is calculated at 200VA per linear foot plus ________.

125%

110%

90%

80%

Question 13 of 25

14. What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long, using copper conductors of 6,530 circular mils with a noncontinuous load of 13A?

5.14V

3.28V

4.01V

6.24V

Question 14 of 25

15. When connected to 15A or 20A multi-outlet general-purpose branch circuits, which of the following shall not exceed 50% of the branch circuit ampere rating?

Multi-outlet assemblies

Receptacle outlets

Noncontinuous loads

Fastened-in-place utilization equipment

Question 15 of 25

16. What is the total load required by the NEC® for two appliance branch circuits plus a laundry branch circuit?

3,000VA

4,500VA

1,500VA

6,000VA

Question 16 of 25

17. What size copper conductor would be required for a 240V, 1Ø circuit supplying a noncontinuous load of 27.5A at a distance of 145', and a maximum voltage drop of 3%?

No. 8

No. 10

No. 12

No. 6

Question 17 of 25

18. What is the load center length for a branch circuit consisting of noncontinuous loads of 125A at 80', 75A at 110', and 50A at 100'?

94.6'

93'

91.5'

92'

Question 18 of 25

19. Continuous loads are calculated at what percentage of the maximum current rating of the overcurrent device?

100%

80%

90%

75%

Question 19 of 25

20. For a given load and length, the branch circuit voltage drop should not exceed ________.

3%

5%

4%

6%

Question 20 of 25

21. Conductors must be derated when installed in conduit ________.

in wet locations

underneath roadways

in garages

on or above rooftops

Question 21 of 25

22. What is the load for 55' of show window using the linear foot method?

20,275VA

13,750VA

15,500VA

17,125VA

Question 22 of 25

23. Air conditioning overcurrent protective devices can never exceed what percentage of the motor-rated load current or the branch circuit selection current (whichever is greater.?

225%

300%

150%

175%

Question 23 of 25

24. What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V, 3Ø?

52A

130A

81A

65A

Question 24 of 25

25. What is the demand load for one household range with a nameplate rating of 11.75kW, 240V, 1Ø?

19kW

8kW

9kW

12kW

Question 25 of 25

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