Licensed Electrical Contractor Electrical Contractor Electrical Codes & Standards 1

Question 1

Per NEC 230.71(A), what is the maximum number of service disconnecting means permitted for a single service?

Accepted Answer

6 disconnects

Answer

3 disconnects

Answer

8 disconnects

Answer

12 disconnects

Question 2

According to NEC Chapter 9, Table 1, what is the maximum allowable conduit fill percentage when more than two conductors are installed in a raceway?

Accepted Answer

40%

Answer

31%

Answer

53%

Answer

60%

Question 3

Per NEC 230.24(B), what is the minimum clearance required for service drop conductors passing over a residential driveway?

Accepted Answer

12 feet

Answer

10 feet

Answer

15 feet

Answer

18 feet

Question 4

Per NEC Table 310.15(B)(3)(a), what ampacity adjustment factor applies when 4 to 6 current-carrying conductors are installed together in the same raceway or cable?

Accepted Answer

0.80

Answer

0.50

Answer

0.70

Answer

0.90

Question 5

According to NEC Table 250.122, what is the minimum size copper equipment grounding conductor required for a circuit protected by a 60-ampere overcurrent device?

Accepted Answer

10 AWG

Answer

12 AWG

Answer

8 AWG

Answer

6 AWG

Question 6

Per NEC 240.4(D), what is the maximum overcurrent protection permitted for a 14 AWG copper conductor used in a branch circuit?

Accepted Answer

15 amperes

Answer

10 amperes

Answer

20 amperes

Answer

25 amperes