Proper use of the NEC is essential and separates the best from the rest, whether in estimating, project management or carrying out the responsibilities of a field foreman. It is important not to use slang words or terms with different meanings than those defined in the Code. Always use a “common language of communication” supported by defined terms.
Created by: Michael Johnston
1. What is the NEC term for the local building department or electrical inspector?
A. Certifying body
B. Qualified electrical testing laboratory
C. Authority having jurisdiction
D. Registered professional engineer
2. The term “disconnecting means” refers to a single disconnecting means.
3. A continuous load is one where the maximum current is expected for ________.
A. 1 hour
B. 1.5 hours
C. 2 hours
D. 3 hours
4. If an NEC rule requires equipment or an installation to be approved, which of the following is implied?
A. Certified by a test lab
B. Listed by a standards development organization
C. Identified by the manufacturer
D. Acceptable to the authority having jurisdiction
5. The terms “building” and “structure” as used in the NEC do not apply to equipment.
6. The term “ground” is intended to mean which of the following?
A. The earth
B. A ground-fault condition
C. A short-circuit condition
D. An arc-fault condition
7. Which of the following is not considered a fitting according to the NEC?
8. Waterproof equipment is constructed so that moisture will not enter the equipment enclosure under specified test conditions.
9. A Class A ground-fault circuit interrupter should trip when the current is 6 mA or higher and should not trip when the ground-fault current is lower than 4 mA.
10. A conducting object through which a direct connection to earth is established best defines which of the following?
A. Ground rod
B. Metal water pipe
C. Grounding electrode
D. Metal frame of a building