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NEC Code Practice Tests Quiz Questions Answers 20
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Question 1 of 15
1. Question
1 pointsFor a one family dwelling, the disconnecting means must have a rating not less than _____-, 3-wire:
Correct
Please Refer: NEC Code 320.30(B)
Incorrect
Please Refer: NEC Code 320.30(B)
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Question 2 of 15
2. Question
1 pointsPlug fuses are permitted to be used only when the circuit voltage does not exceed _____ between conductors:
Correct
Please Refer: NEC Code 240.50(A)(1)
Incorrect
Please Refer: NEC Code 240.50(A)(1)
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Question 3 of 15
3. Question
1 pointsOvercurrent protection for a 10AWG copper conductors must not exceed ______:
Correct
Please Refer: NEC Code 240.4(D)(7)
Incorrect
Please Refer: NEC Code 240.4(D)(7)
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Question 4 of 15
4. Question
1 pointsFor buildings or installations consisting of two 2wire branch circuits, the service disconnecting means have a rating not less than _____:
Correct
Please Refer: NEC Code 230.79(B)
Incorrect
Please Refer: NEC Code 230.79(B)
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Question 5 of 15
5. Question
1 pointsService entrance cables must be supported within ____ of the weatherboard, raceway connections or enclosures, and at intervals not exceeding 30in.
Correct
Please Refer: NEC Code 230.51(A)
Incorrect
Please Refer: NEC Code 230.51(A)
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Question 6 of 15
6. Question
1 pointsOverhead conductors must maintain a vertical clearance of at least _____ above platforms, projections r surfaces from which they may be reached:
Correct
Please Refer: NEC Code 225.19(D)(2)
Incorrect
Please Refer: NEC Code 225.19(D)(2)
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Question 7 of 15
7. Question
1 pointsThe feeder/service VA load must not be less than 150 VA for every ____ of show window or track lighting or fraction of that length:
Correct
Please Refer: NEC Code 220.43(B)
Incorrect
Please Refer: NEC Code 220.43(B)
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Question 8 of 15
8. Question
1 pointsWound rotor motor branch circuit must be protected using dual element fuse against short circuit and ground faults by a protective device sized no greater than ____ of the full load current:
Correct
Please Refer: NEC Code Table 430.52
Incorrect
Please Refer: NEC Code Table 430.52
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Question 9 of 15
9. Question
1 pointsMotor control conductors 14 AWG and smaller must be torqued at a minimum of ____ for screw type pressure terminal, unless identified otherwise:
Correct
Please Refer: NEC Code 430.9(C)
Incorrect
Please Refer: NEC Code 430.9(C)
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Question 10 of 15
10. Question
1 pointsWhere a duct heater is located above a suspended the width of the working space for the duct heater must be not less than ____:
Correct
Please Refer: NEC Code 424.66(B)(2)
Incorrect
Please Refer: NEC Code 424.66(B)(2)
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Question 11 of 15
11. Question
1 pointsFor the appliances rated at not more than ____ the branch circuit overcurrent protection device such as circuit breaker or plug fuse can serve as the appliance disconnect:
Correct
Please Refer: NEC Code 422.31(A)
Incorrect
Please Refer: NEC Code 422.31(A)
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Question 12 of 15
12. Question
1 pointsConductors within ____ of ballast, LED driver, power supply or transformer must have an insulation temperature rating not lower than 90oC.
Correct
Please Refer: NEC Code 410.68
Incorrect
Please Refer: NEC Code 410.68
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Question 13 of 15
13. Question
1 pointsA minimum clearance of _____ shall be maintained for surface mounted fluorescent luminaire from the closet storage space
Correct
Please Refer: NEC Code 410.16(C)(2)
Incorrect
Please Refer: NEC Code 410.16(C)(2)
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Question 14 of 15
14. Question
1 pointsA smooth inner surface with integral reinforcement within the raceway wall:
Correct
Please Refer: NEC Code 356.2(2)
Incorrect
Please Refer: NEC Code 356.2(2)
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Question 15 of 15
15. Question
1 pointsType NM cable can be unsupported not more than _____ of unsupported cable is permitted from the last point of support within an accessible ceiling for the connection of luminaires or equipment:
Correct
Please Refer: NEC Code 334.40
Incorrect
Please Refer: NEC Code 334.40