About NEC Article 100 Definitions Quiz
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- This quiz through repetition by design helps you learn the definitions contained in Article 100. It contains only 10 questions generated from a bank of 121 questions. Quick and painless.
- Each time you take the quiz, questions are shuffled and 10 are picked randomly from the bank. The more often you take it the more questions you will be exposed to and the more you will learn the definitions within the National Electrical Code. And you will learn them.
- Pressing the submit button immediately returns your score along with the test questions and correct answer information for those questions you answered wrong. The test results are a very useful study tool.
| Trade Category: | Electrical |
| Test Category: | National Electrical Code |
| Test Subject: | Article 100 Definitions |
| Test Number: | 1 of 1 |
| Questions on Test: | 10 |
| From Bank of: | 121 Questions |
| Randomly Generated: | Yes |
| Test Time: |
#1. “Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally contacting energized parts.”
CORRECT ANSWER INFO:
Correct answer is C: Enclosed
NEC DEFINITION:
Enclosed: Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally contacting energized parts.
(Article 100 Definitions: Part I General)
#2. According to the NEC, which of the following defines Combustible Dust [as applied to Hazardous (Classified) Locations]?
CORRECT ANSWER INFO:
Correct answer is B: Dust particles that are 500 microns or smaller, and present a fire or explosion hazard when dispersed and ignited in air.
NEC DEFINITION:
Combustible Dust [as applied to Hazardous (Classified) Locations]: Dust particles that are 500 microns or smaller (i.e., material passing a U.S. No. 35 Standard Sieve as defined in ASTM E11-2015, Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves), and present a fire or explosion hazard when dispersed and ignited in air.
(Article 100 Definitions: Part 1 General)
#3. The term “Ampacity” is defined in the NEC as
CORRECT ANSWER INFO:
Correct answer is A: the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
NEC DEFINITION:
Ampacity: The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
(Article 100 Definitions; Part I General)
#4. What is a device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected?
CORRECT ANSWER INFO:
Correct answer is A: Controller
NEC DEFINITION:
Controller: A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.
(Article 100 Definitions: Part I General)
NT NOTE:
Although the correct answer to this question is Controller, the other answers are also technically correct as they serve the intent of the NEC definition of Controller. They are all controllers.
#5. What is the conductor that is used to connect the system grounded conductor or the equipment to a grounding electrode or to a point on the grounding electrode system?
CORRECT ANSWER INFO:
Correct answer is B: Grounding Electrode Conductor
NEC DEFINITION:
Grounding Electrode Conductor: A conductor used to connect the system grounded conductor or the equipment to a grounding electrode or to a point on the grounding electrode system.
(Article 100 Definitions: Part I General)
#6. What is the circuit called of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current?
CORRECT ANSWER INFO:
Correct answer is C: Control circuit
NEC DEFINITION:
Control Circuit: The circuit of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current.
(Article 100 Definitions: Part I General)
#7. A two-family dwelling is defined in the NEC as
CORRECT ANSWER INFO:
Correct answer is C: a building that consists solely of two dwelling units.
NEC DEFINITION:
Dwelling, Two-Family: A building that consists solely of two dwelling units.
(Article 100 Definitions: Part I General)
NT NOTE:
For the sake of study convenience we list the NEC definitions for the different types of dwelling units:
Dwelling, One-Family: A building that consists solely of one dwelling unit.
Dwelling, Two-Family: A building that consists solely of two dwelling units.
Dwelling, Multifamily: A building that contains three or more dwelling units.
Dwelling Unit: A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.
#8. Which defines the grounded conductor?
CORRECT ANSWER INFO:
Correct answer is D: A system or circuit conductor that is intentionally grounded.
NEC DEFINITION:
Grounded Conductor: A system or circuit conductor that is intentionally grounded.
(Article 100 Definitions: Part I General)
#9. What is a grounding electrode?
CORRECT ANSWER INFO:
Correct answer is A: A conducting object through which a direct connection to earth is established.
NEC DEFINITION:
Grounding Electrode : A conducting object through which a direct connection to earth is established.
(Article 100 Definitions: Part I General)
NT COMMENTARY:
Although the three other answer choices are considered grounding electrodes according to NEC 250-52, the definition in Article 100 is as above in correct answer A.
#10. What do you call an accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function?
CORRECT ANSWER INFO:
Correct answer is D: Fitting
NEC DEFINITION:
Fitting: An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function.
(Article 100 Definitions: Part I General)