E2 Commercial Electrical Inspector (NEC) Compliance

Question 1

What is the maximum allowable voltage drop for a branch circuit according to NEC recommendations?

Accepted Answer

3%

Answer

1%

Answer

5%

Answer

10%

Question 2

When calculating the ampacity of a conductor, which NEC table should be referenced for the baseline ampacity of insulated conductors?

Accepted Answer

Table 310.16

Answer

Table 310.3(B)

Answer

Table 250.66

Answer

Table 430.52

Question 3

What is the minimum depth required for a direct-buried electrical conduit under a public road?

Accepted Answer

24 inches

Answer

6 inches

Answer

12 inches

Answer

18 inches

Question 4

Which of the following circuits requires GFCI protection in a commercial building?

Accepted Answer

Receptacles in restrooms

Answer

Receptacles in an office area

Answer

Receptacles in a break room

Answer

Receptacles in a server room

Question 5

In a commercial setting, what is the maximum number of disconnects permitted for a service entrance without a main breaker?

Accepted Answer

6

Answer

1

Answer

3

Answer

5