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

185%

300%

200%

125%

Question 1 of 25

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

81A

65A

52A

130A

Question 2 of 25

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

125A

175A

60A

100A

Question 3 of 25

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

30.69A

28.15A

25.25A

17.32A

Question 4 of 25

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

5%

10%

25%

50%

Question 5 of 25

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

75%

100%

90%

80%

Question 6 of 25

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

1,800VA

3,500VA

1,980VA

2,200VA

Question 7 of 25

8. 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'?

91.5'

94.6'

92'

93'

Question 8 of 25

9. 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'?

85.21'

71.72'

60.40'

63.55'

Question 9 of 25

10. 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

Five

Two

Four

Question 10 of 25

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

17,125VA

13,750VA

20,275VA

15,500VA

Question 11 of 25

12. 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

Fastened-in-place utilization equipment

Noncontinuous loads

Receptacle outlets

Question 12 of 25

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

6%

5%

3%

4%

Question 13 of 25

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

9kW

12kW

19kW

8kW

Question 14 of 25

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

50A

41A

45.5A

44A

Question 15 of 25

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

4,500VA

1,500VA

6,000VA

3,000VA

Question 16 of 25

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

157.95'

125.12'

136.56'

106.43'

Question 17 of 25

18. 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?

17.25A

15.00A

16.50A

18.75A

Question 18 of 25

19. 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?

4.01V

3.28V

5.14V

6.24V

Question 19 of 25

20. 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.?

150%

225%

175%

300%

Question 20 of 25

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

16.65A

12.72A

26.85A

62.16A

Question 21 of 25

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

on or above rooftops

in garages

in wet locations

underneath roadways

Question 22 of 25

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

80%

125%

110%

90%

Question 23 of 25

24. 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?

13.75A

10.50A

11.20A

15.60A

Question 24 of 25

25. 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. 12

No. 10

No. 6

No. 8

Question 25 of 25

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