NECA Electrical Code & Standards 3

Question 1

According to NEC 404.2(C), a grounding conductor must be provided at switch locations where switches control lighting in certain locations. Which location specifically triggers this requirement?

Accepted Answer

Bathroom

Answer

NEC 404.2(C) requires an equipment grounding conductor at switch locations in bathrooms, as well as garages and outdoor locations.

Question 2

Under NEC 314.16, the volume allowance for a No. 12 AWG conductor used when calculating box fill is:

Accepted Answer

2.25 cubic inches

Answer

NEC Table 314.16(B) assigns 2.25 cubic inches per No. 12 AWG conductor for box fill calculations.

Question 3

Which NEC article covers the installation requirements for transformers rated 600V or less?

Accepted Answer

Article 450

Answer

NEC Article 450 covers the installation of transformers, including those rated 600V or less.

Question 4

Per NEC 300.14, at least how much free conductor must be left at each outlet, junction, and switch point?

Accepted Answer

6 inches

Answer

NEC 300.14 requires at least 6 inches of free conductor measured from the point where it emerges from the raceway or cable sheath.

Question 5

What is the NEC term for the low-impedance path intended to facilitate overcurrent device operation in the event of a ground fault?

Accepted Answer

Effective ground-fault current path

Answer

NEC Article 100 defines the 'effective ground-fault current path' as the intentionally constructed low-impedance path from the fault point to the electrical supply source.

(NECA) National Electrical Contractors Association Practice Test

(NECA) National Electrical Contractors Association Practice Test

NECA Electrical Code & Standards 3