Mandatory Rules in the NEC Contain the Language ____

question 13

Multiple Choice

Mandatory rules in the NEC contain the language ____.

• A) "must" or "must not"
• B) "shall" or "shall not"
• C) "penalties for noncompliance"
• D) "suggested but discretionary"

---

Definitions:

Inquiry Letters

Formal letters written to request information or clarify doubts about a product, service, or any matter of interest.

Writing Guideline

Established standards and principles guiding how written content should be structured, styled, and presented, aimed at ensuring clarity, consistency, and effectiveness.

Digitally Archived

The process of storing documents, images, or other media in a digital format for long-term preservation and access.

Notation "cc"

A notation used in written correspondence indicating that a copy of the document has been sent to another party; stands for "carbon copy."