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National Electrical Code Articles and Information

NEC Quiz: Article 80 Answers

by Mark Lamendola

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1.      [80.1]Inspection, Investigation, Review (of drawings and specifications), Implementation (everything from design through maintenance), and Regulation.

2.      [80.2]Article 80 has only 3 definitions. These apply to administration and enforcement, while Article 100 defines key terms used throughout the Code.

3.      [80.9]New installations, Existing installations, and Additions, alterations, or repairs.

4.      [80.11(A)]Occupancy cannot occur, in whole or in part, if a newly constructed building violates provisions of the NEC.

5.      [80.11(B)]Grandfathering applies to existing buildings, under two conditions:
1. The occupancy classification remains unchanged, and
2. There is no condition imminently hazardous to life of property.

6.      [80.13]The Authority Having Jurisdiction (AHJ), who is an individual (or individuals) appointed by the governing body (e.g., state or municipality).

7.      [80.13(2)]The AHJ can order the premises disconnected from its power supply if any electrical equipment or its installation is dangerous to human life or property. The AHJ doesn't have to be right about that--just convinced.

8.      [80.13(4)]The AHJ can obtain assistance from the police, fire, and other enforcement agencies as needed to enforce the Code.

9.      [80.14(7)]The AHJ is authorized at all reasonable times to enter and examine any building, structure, or premises to make electrical inspections. The AHJ can also obtain a warrant to inspec without the owner’s consent. In an emergency where the AHJ can reasonably determine there’s immediate danger to people or property, a warrant is presumed.

10.      [80.19(F)(1)When you complete any electrical installation under a permit (other than an electrical permit), you (the person, firm, or corporation making the installation), must notify the electrical inspector. The inspector must then make the inspection in a reasonable time.


How the NEC is arranged

  1. The first four Chapters of the NEC apply to all installations.
  2. Article 90 precedes Chapter One, and establishes the authority of the NEC.
  3. Article 80 follows the body of the NEC; it exists as Annex H. It provides the requirements for administration.
  4. Chapters 5, 6, and 7 are the "special" chapters, covering special: occupancies, equipment, and conditions (in that order).
  5. Chapter 8 provides the requirements for communications systems.
  6. Chapter 9 provides tables.
  7. The appendices provide mostly reference information.
  8. Appendix D contains examples that every NEC user should study.

Try your NEC moxy:

  • Do you know the difference between bonding and grounding? Hint: Look in the NEC, Article 100.
  • Does the NEC refer to grounding incorrectly in any of its articles? Yes! So be careful to apply the Article 100 definitions. Don't ground where you should bond.
  • When doing motor load calculations, which Article covers hermetic motors? Answer: While Article 440 covers the application of hermetic motors, it does so only by amending Article 430 because hermetic motors are a special case of motors. For motor load calculations, refer to Article 430.
  • Does the NEC provide a voltage drop requirement? Yes! It does so in a special case, which is Article 648 Sensitive Electronic Equipment. But for general applications, it does not provide a requirement; it merely provides a recommendation in a couple of FPNs.
  • Take our Code Quizzes.

Remember other applicable codes, rules, standards, and references:

  • OSHA's electrical worker safety rules.
  • IEEE standards.
  • NETA standards.
  • NFPA standards.
  • International Codes (if applicable to the installation).
  • State Codes (if the state has them).
  • Local ordinances and permit requirements.
  • Local fire codes.
  • Manufacturer requirements or guidelines.
  • Customer security requirements.
  • Industry standards.
  • Your company's own internal standards, practices, and procedures.
  • Engineering drawing notes.


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