Licensed Electrical Contractor NEC General Requirements 2

Question 1

According to NEC Article 110, what is the minimum headroom required for electrical equipment rated 1200A or more and over 6 feet wide in a dedicated electrical space?

Accepted Answer

6 feet

Answer

NEC 110.26(A)(3) requires a minimum headroom of 6 feet for equipment rated 1200A or more and over 6 feet wide.

Question 2

Under the NEC, which article governs the requirements for conductors entering enclosures to prevent abrasion?

Accepted Answer

Article 300

Answer

NEC Article 300 covers wiring methods and requires conductors to be protected from abrasion where they enter enclosures.

Question 3

What does NEC 110.14 primarily address?

Accepted Answer

Electrical connections and terminals

Answer

NEC 110.14 covers electrical connections, including the requirement that terminals be compatible with the conductors used.

Question 4

Per NEC 110.3(B), installed electrical equipment must be used:

Accepted Answer

In accordance with its listing and labeling instructions

Answer

NEC 110.3(B) requires that listed and labeled equipment be installed and used in accordance with the instructions included in the listing or labeling.

Question 5

Which NEC section requires that interrupting ratings of overcurrent devices be sufficient for the available fault current?

Accepted Answer

110.9

Answer

NEC 110.9 requires that equipment intended to interrupt current at fault levels have an interrupting rating sufficient for the nominal circuit voltage and the current available.

Licensed Electrical Contractor Practice Test

Licensed Electrical Contractor Practice Test

Licensed Electrical Contractor NEC General Requirements 2