E2 General Requirements and NEC 4

Question 1

Under NEC 110.26(C), illumination must be provided for all working spaces about:

Accepted Answer

Service equipment, switchboards, switchgear, panelboards, or motor control centers installed indoors

Answer

NEC 110.26(C) requires that illumination be provided for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers installed indoors.

Question 2

What is the NEC requirement for conductor ampacity when conductors are bundled together in a raceway or cable?

Accepted Answer

Ampacity must be adjusted (derated) based on the number of current-carrying conductors

Answer

NEC 310.15(C) requires that when more than three current-carrying conductors are bundled, their ampacity must be derated per the applicable adjustment factors.

Question 3

The NEC purpose statement (Article 90.1) states that the purpose of the Code is the:

Accepted Answer

Practical safeguarding of persons and property from hazards arising from the use of electricity

Answer

NEC 90.1(A) states that the purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity.

Question 4

Per NEC 312.11, when shall a wiring enclosure (cabinet or cutout box) be secured to the wall or other supporting surface?

Accepted Answer

It shall be securely fastened in place

Answer

NEC 312.11 requires that all cabinets, cutout boxes, and meter socket enclosures be securely fastened in place.

Question 5

Under NEC 90.4, who has the responsibility and authority to interpret the NEC for a specific installation?

Accepted Answer

The authority having jurisdiction (AHJ)

Answer

NEC 90.4 designates the authority having jurisdiction (AHJ) as the entity responsible for interpreting the NEC rules and approving equipment and installations.

(E2) E2 Commercial Electrical Inspector Practice Test

(E2) E2 Commercial Electrical Inspector Practice Test

E2 General Requirements and NEC 4