NEC Article 100 Definitions Quiz

Klein Linesman sidecutter electrician pliers.

About NEC Article 100 Definitions Quiz

The Coffee-Break Code Quiz Series is all about learning the National Electrical Code conveniently in small doses. Short quizzes enable you to take in some study time during coffee/lunch breaks or in between jobs/classes. Treat it as a trivia game and discuss it with other electricians, apprentices, or students in your company or school. See who has the knowledge and see who does not.

In whatever way you use these quizzes, NationalTradesman.com renders great on mobile devices as well as desktops and laptops and you can call up a quiz at your convenience, bookmark it, and make progress in learning the NEC. Please feel free to share this quiz with others individually, or on forums and social media. Thanks.

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:

Results

#1. What is the NEC definition of ground?

The green screw

The neutral conductor

The earth

The bare wire

CORRECT ANSWER INFO:

Correct answer is C: The earth

NEC DEFINITION:

Ground: The earth.

(Article 100 Definitions: Part I General)

NT NOTE:

Lets not overcomplicate this… It’s the earth… The common denominator in all electrical installations… Just stick a rod in it and we’re done.

#2. What is a “Multiwire Branch Circuit”?

A branch circuit that supplies two or more receptacles or outlets for lighting and appliances.

A branch circuit that has multiple wires and excess stuff that is often unnecessarily and strewn and curled up in the inside of the flippin panelboard so bad that if you straightened it all out could possibly encircle the earth 5 times.

A branch circuit that supplies only one utilization equipment.

A branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has an equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system.

CORRECT ANSWER INFO:

Correct answer is D: A branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has an equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system.

NEC DEFINITION:

Multiwire Branch Circuit: A branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has an equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system.

(Article 100 Definitions; Part I General)

#3. What is selective coordination?

When an electrical foreman selects to coordinate his/her job to take advantage of all the coffee breaks the other trades take to get the most work out of his/her electricians.

When the architect coordinates the prosecution of a construction project and selects the construction management company as well as all the trades.

Traffic signal control coordination on high capacity roads that selects timing patterns based on immediate data from intelligent transportation systems equipment.

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the selection and installation of overcurrent protective devices and their ratings or settings for the full range of available overcurrents, from overload to the maximum available fault current, and for the full range of overcurrent protective device opening times associated with those overcurrents.

CORRECT ANSWER INFO:

Correct answer is D: Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the selection and installation of overcurrent protective devices and their ratings or settings for the full range of available overcurrents, from overload to the maximum available fault current, and for the full range of overcurrent protective device opening times associated with those overcurrents.

NEC DEFINITION:

Coordination, Selective (Selective Coordination): Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the selection and installation of overcurrent protective devices and their ratings or settings for the full range of available overcurrents, from overload to the maximum available fault current, and for the full range of overcurrent protective device opening times associated with those overcurrents.

(Article 100 Definitions: Part I General)

NT NOTE:

In a nutshell what this means is select your overcurrent devices such as fuses and circuit breakers so that when there is a problem with the circuit, the problem opens the circuit at the closest overcurrent device such as the branch circuit breaker and not the main breaker.

#4. What does the NEC define as a 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.

A five-star hotel room.

That area in some homes where grandma and grandpa live.

A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

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.

#5. Which of the following terms is defined as “acceptable to the authority having jurisdiction.” ?

Labeled

Qualified person.

Listed

Approved

CORRECT ANSWER INFO:

Correct answer is D: Approved

NEC DEFINITION:

Approved: Acceptable to the authority having jurisdiction.

(Article 100 Definitions; Part I General)

#6. What is an inverter intended for use in parallel with an electric utility to supply common loads and may deliver power to the utility?

The mother of all inverters

Interactive inverter

Solar power inverter

Wind power inverter

CORRECT ANSWER INFO:

Correct answer is B: Interactive inverter

NEC DEFINITION:

Interactive Inverter: An inverter intended for use in parallel with an electric utility to supply common loads that may deliver power to the utility.

(Article 100 Definitions: Part I General)

NT COMMENTARY:

The answers for C (solar power inverter) and D (wind power inverter) are interactive inverters.

#7. What is a solderless pressure connector?

A connector that is lead-free.

A connector that does not require a butane torch to make the connection.

A device that establishes a connection by piercing the electrical insulation as it is tightened.

A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder.

CORRECT ANSWER INFO:

Correct answer is D: A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder.

NEC DEFINITION:

Connector, Pressure (Solderless): A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder.

(Article 100 Definitions: Part I General)

#8. When a piece of equipment is said to be externally operable, it is

capable of being operated without exposing the operator to contact with live parts.

designed to be operated from outside the building.

radio-controlled.

operated with the handle on the equipment.

CORRECT ANSWER INFO:

Correct answer is A: capable of being operated without exposing the operator to contact with live parts.

NEC DEFINITION:

Externally Operable: Capable of being operated without exposing the operator to contact with live parts.

(Article 100 Definitions: Part I General)

#9. What is an unintentional, elecrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth called?

A ground fault

A weld

A mistake

A short circuit

CORRECT ANSWER INFO:

Correct answer is A: A ground fault

NEC DEFINITION:

Ground fault: An unintentional, elecrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth.

(Article 100 Definitions: Part I General)

#10. What is an enclosure defined as?

An area within a fence.

A junction box.

A panelboard.

The case or housing of apparatus, or the fence or walls surrounding an installation to prevent personnel from accidentally contacting energized parts or to protect the equipment from physical damage.

CORRECT ANSWER INFO:

Correct answer is D: Enclosure

NEC DEFINITION:

Enclosure: The case or housing of apparatus, or the fence or walls surrounding an installation to prevent personnel from accidentally contacting energized parts or to protect the equipment from physical damage.

(Article 100 Definitions: Part I General)

SUBMIT for SCORING

BACK to NEC Code Quiz Listing