NEC Code Basic 3 — Questions and Answers
Question 1: In NEC Chapter 1, which article contains the definitions used throughout the code?
- Article 90
- Article 100 (Correct answer)
- Article 110
- Article 200
Correct answer: Article 100
Article 100 contains the definitions essential to applying the NEC.
Question 2: What term does the NEC use for the person or agency responsible for enforcing the code?
- The Inspector General
- The Authority Having Jurisdiction (AHJ) (Correct answer)
- The Chief Electrician
- The Code Council
Correct answer: The Authority Having Jurisdiction (AHJ)
The Authority Having Jurisdiction (AHJ) is responsible for enforcing the NEC and approving installations.
Question 3: According to the NEC, what does the term 'Approved' mean?
- Listed by UL
- Acceptable to the Authority Having Jurisdiction (Correct answer)
- Tested by NFPA
- Installed by a licensed electrician
Correct answer: Acceptable to the Authority Having Jurisdiction
'Approved' means acceptable to the Authority Having Jurisdiction.
Question 4: What is the NEC definition of a 'Branch Circuit'?
- The service entrance conductors
- The conductors between the final overcurrent device and the outlets (Correct answer)
- The grounding electrode conductor
- The feeder from the utility transformer
Correct answer: The conductors between the final overcurrent device and the outlets
A branch circuit is the circuit conductors between the final overcurrent device protecting the circuit and the outlets.
Question 5: In the NEC, what does 'Listed' indicate about equipment?
- It is for sale
- It is included in a list by a recognized testing organization as meeting standards (Correct answer)
- It is approved by the manufacturer only
- It is required by federal law
Correct answer: It is included in a list by a recognized testing organization as meeting standards
'Listed' means equipment is included in a list published by a recognized testing/evaluation organization that found it meets appropriate standards.
Question 6: What does the NEC term 'Labeled' refer to?
- A price tag
- A label or marking from a recognized testing organization indicating compliance (Correct answer)
- The manufacturer's logo
- A warning sticker only
Correct answer: A label or marking from a recognized testing organization indicating compliance
'Labeled' means equipment bears a label or mark of an organization that maintains periodic inspection and indicates compliance with standards.
Question 7: Per NEC definitions, what is an 'Outlet'?
- Only a wall receptacle
- A point on the wiring system where current is taken to supply utilization equipment (Correct answer)
- A circuit breaker
- A junction box
Correct answer: A point on the wiring system where current is taken to supply utilization equipment
An outlet is a point on the wiring system at which current is taken to supply utilization equipment.
NEC Code Basic 3
In NEC Chapter 1, which article contains the definitions used throughout the code?