NEC Basics
What is the primary purpose of the NEC®?
To protect people and property from electrical hazards.
Which NEC® article explains the purpose and scope of the Code?
Article 90.
Which organization publishes the NEC®?
NFPA.
Which word indicates a mandatory NEC® rule?
Shall.
Which NEC® article applies to swimming pools?
Article 680.
True or False: The NEC® is a design manual.
False.
Where are definitions found in the NEC®?
Article 100.
Which organization represents electrical manufacturers?
NEMA.
Which phrase indicates a permissive rule?
Shall be permitted.
Where would you find the definition of “feeder”?
Article 100.
What type of safety standard does the NEC® represent?
Minimum safety standard.
How many chapters are in the NEC®?
Nine.
What organization tests and certifies electrical products?
NRTL
True or False: Informational Notes are enforceable code rules.
False.
Which chapter covers equipment?
Chapter 4.
Who develops and revises the NEC®?
Panels of electrical experts.
Which chapter covers wiring methods and materials?
Chapter 3.
Who enforces the NEC®?
Authority Having Jurisdiction (AHJ)
What is an exception in the NEC®?
A rule allowing alternative methods under specific conditions.
Which NEC® chapter covers communications systems?
Chapter 8.
Why must electricians use the most recently adopted NEC® edition?
To ensure installations meet current safety requirements and local code adoption.
Which chapters generally apply to all electrical installations?
Chapters 1–4.
True or False: UL approves electrical installations.
False (UL certifies products).
Identify the rule type: “The disconnect shall not be installed behind the panel.”
Mandatory.
Why are the index and table of contents important tools in the NEC®?
They help electricians quickly locate applicable code requirements.