Journeyman Electrician Exam Practice Test-40
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Free Online Journeyman Electrician Exam Practice Test-40
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Question 1 of 10
1. Question
A residence has six 2-wire branch circuits what is the minimum size service is required for this residence?
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Refer : NEC 230.79
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Question 2 of 10
2. Question
What is the demand factor in percentage for a non-dwelling unit with a receptacle load of 15 kVA?
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Refer : NEC Table 220.44
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Question 3 of 10
3. Question
What is permissible voltage drop in percentage for feeders at the farthest outlet of power heating and lighting loads?
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Refer : NEC 215.2(A) (4)
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Question 4 of 10
4. Question
What is the minimum percentage rated voltage that a storage battery should supply the emergency load?
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Question 5 of 10
5. Question
What is the maximum operating voltage of a low voltage lighting system?
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Refer: NEC 411.2
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Question 6 of 10
6. Question
How many number of branch circuits required for a 1600 square foot house?
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General Lighting load = 1600 * 3 (house) = 4800 VA
4800/120 = 40 amperes
So 2 20-ampere or 3 15 ampere branch circuits are required -
Question 7 of 10
7. Question
Receptacles installed on 20 ampere branch circuit shall be grounding type.
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Question 8 of 10
8. Question
Type ITC cables cannot be used in the circuits operating more than ………….. amperes at 150 volts?
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Question 9 of 10
9. Question
What is the minimum clearance of service drops of 600 volts over residential property?
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Refer : 230.24 (B)(3)
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Question 10 of 10
10. Question
What is the operating cost of 1 watt electric clock for two years at 2 cents per kwh?
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Cost = 1 * 24 * 365 * 2 * 2 / 1000 = 35 cents