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. Which of the following terms does the NEC define as ” The connection between the grounded circuit conductor and the equipment grounding conductor at the service.” ?
CORRECT ANSWER INFO:
Correct answer is B: Main Bonding Jumper
CORRECT ANSWER INFO:
Main Bonding Jumper: The connection between the grounded circuit conductor and the equipment grounding conductor at the service.
(Article 100 Definitions; Part I General)
#2. What is defined as a unit of an electrical system, other than a conductor, that carries or controls electric energy as its principal function.
CORRECT ANSWER INFO:
Correct answer is B: Device
NEC DEFINITION:
Device: A unit of an electrical system, other than a conductor, that carries or controls electric energy as its principal function.
(Article 100 Definitions: Part I General)
NT NOTE:
The other three choices; switch, receptacle, and cord cap, are all devices.
#3. What does the term “varying duty” mean?
CORRECT ANSWER INFO:
Correct answer is A: Equipment that may be operated at a wide range of loads and/or for wide periods of time.
NEC DEFINITION:
Duty, Varying: Operation at loads, and for intervals of time, both of which may be subject to wide variation.
(Article 100 Definitions: Part I General)
NT NOTE:
For the sake of study convenience we list the NEC definitions for types of duty as applied to the cycling of electrical loads:
Duty, Continuous: Operation at a substantially constant load for an indefinitely long time.
Duty, Intermittent: Operation for alternate intervals of (1), load and no load; or (2) load and rest; or (3) load, no load, and rest.
Duty, Periodic: Intermittent operation in which the load conditions are regularly recurrent.
Duty, Short-Time: Operation at a substantially constant load for a short and definite, specified time.
Duty, Varying: Operation at loads, and for intervals of time, both of which may be subject to wide variation.
For the new apprentice electrician and even experienced ones, all this can seem confusing but keep in mind the NEC is for all electricians in different capacities of work. An industrial electrician or one that is part of a facilities management team will understand these terms as they apply to their job more than say an electrician performing residential or commercial construction and service work.
#4. The NEC defines a continuous load as one where the maximum current is expected to continue for
CORRECT ANSWER INFO:
Correct answer is B: 3 hours or more.
NEC DEFINITION:
Continuous Load: A load where the maximum current is expected to continue for 3 hours or more.
(Article 100 Definitions: Part I General)
#5. Which is “An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung.” ?
CORRECT ANSWER INFO:
Correct answer is D: Cabinet
NEC DEFINITION:
Cabinet: An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung.
(Article 100 Definitions; Part I General)
#6. A Composite Optical Fiber Cable is
CORRECT ANSWER INFO:
Correct answer is D: a cable containing optical fibers and current-carrying electrical conductors.
NEC DEFINITION:
Composite Optical Fiber Cable: A cable containing optical fibers and current-carrying electrical conductors.
(Article 100 Definitions: Part 1 General)
#7. Which of the following power systems could be considered part of a hybrid system?
CORRECT ANSWER INFO:
Correct answer is D: A and C
NEC DEFINITION:
Hybrid System: A system comprised of multiple power sources. These power sources could include photovoltaic, wind, micro-hydro generators, engine-driven generators, and others, but do not include electric power production and distribution network systems. Energy storage systems such as batteries, flywheels, or superconducting magnetic storage equipment do not constitute a power source for the purpose of this definition. The energy regenerated by an overwhelming (descending) elevator does not constitute a power source for the purpose of this definition.
(Article 100 Definitions: Part I General)
#8. What does the NEC define as a guest suite?
CORRECT ANSWER INFO:
Correct answer is A: An accomodation with two or more contiguous rooms comprising a compartment, with or without doors between such rooms, that provides living, sleeping, sanitary, and storage facilities.
NEC DEFINITION:
Guest Suite: An accomodation with two or more contiguous rooms comprising a compartment, with or without doors between such rooms, that provides living, sleeping, sanitary, and storage facilities.
(Article 100 Definitions: Part I General)
NT COMMENTARY:
Wrong answer “D” is the NEC definition for a dwelling unit. The big difference is that guest suites (and guest rooms) do not have cooking provisions.
#9. What are circuit conductors called that are between the service equipment and the final branch-circuit overcurrent device?
CORRECT ANSWER INFO:
Correct answer is B: Feeder
NEC DEFINITION:
Feeder: All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.
(Article 100 Definitions: Part I General)
#10. What is the general term that includes fittings, devices, appliances, luminaires, apparatus, machinery, and the like that is used asa part of, or in connection with, an electrical installation?
CORRECT ANSWER INFO:
Correct answer is B: Equipment
NEC DEFINITION:
Equipment: A general term, including fittings, devices, appliances, luminaires, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation.
(Article 100 Definitions: Part I General)