Question

1. in addition to installation rules, the nec is concerned with the ___.

a. types of installation methods
b. electrical contractor licensing requirements
c. type and quality of electrical wiring system materials
d. supervising agency

Explanation:

The National Electrical Code (NEC) is mainly focused on safety - related aspects of electrical installations. It specifies requirements regarding the type and quality of electrical wiring system materials to ensure safe electrical systems. It is not about installation methods in terms of just types, not about electrical contractor licensing requirements, and not about the supervising agency.

Answer:

c. type and quality of electrical wiring system materials