Article 100-110 Quiz02 – Electrician Exam Practice

Article 100-110 Quiz02

This quiz includes 20 questions selected from NEC Articles 100 to 110. The questions are chosen randomly, with no repeats from other quizzes—unless a particular question is used again on purpose because it relates to more than one topic, such as both cable ampacity and cable application.

If you spot any issues or have suggestions, you’re welcome to report questions or review the quiz. Your feedback matters, and contributions to help improve and refine the questions and quizzes are always appreciated.

It ensures electrical continuity.

1 / 20

What does "Bonded" mean?

a. Connected to establish electrical continuity and conductivity.

b. Insulated to prevent conductivity.

c. Shielded from electrical interferences.

d. Grounded through a grounding electrode.

This type of enclosure is designed for ease of access to the electrical components it houses.

2 / 20

A _______________ is an enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the enclosure.

a. Cutout box

b. Panelboard

c. Switchgear

d. Cabinet

The interrupting rating must be sufficient to handle the maximum current the equipment may encounter without failure.

3 / 20

Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage _______________ the current that must be interrupted.

a. At least equal to

b. Matching

c. At least greater than

d. At most, less than

The clearance requirement increases when grounded parts are present opposite exposed live parts in the working space.

4 / 20

Exposed live parts on one side of the working space and grounded parts on the other side of the working space must have _______________ clearance in a 277-volt to ground.

a. 4 feet

b. 2 feet 6 inches

c. 3 feet

d. 3 feet 6 inches

The interrupting rating must be sufficient to handle the maximum current the equipment may encounter without failure.

5 / 20

Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage _______________ the current that must be interrupted.

a. At most, less than

b. Matching

c. At least greater than

d. At least equal to

This definition includes control of motor speed.

6 / 20

How is "Adjustable Speed Drive" defined in the NEC?

a. A device that provides constant speed to motors.

b. A power supply that adjusts motor voltages.

c. A power supply that adjusts motor voltages.

d. Power conversion equipment that provides a means of adjusting the speed of an electric motor.

Think about photovoltaic systems.

7 / 20

What is an "Array" as defined in Article 100?

a. A mechanically and electrically integrated grouping of modules with support structure, including attached system components.

b. A series of batteries connected in series.

c. A combination of power and control devices.

d. A configuration of transformers used for backup.

Duration is key here.

8 / 20

How is "Continuous Load" defined?

a. A load where the maximum current is expected to continue for 3 hours or more.

b. A load that operates continuously but below maximum capacity.

c. A load with varying current requirements.

d. A load that operates for less than 1 hour.

Backup power is a key concept here.

9 / 20

What is an "Alternate Power Source"?

a. A set of transformers used for backup power.

b. One or more generator sets or battery systems intended to provide power during interruption of the normal electrical service.

c. A combination of multiple energy sources for efficiency.

d. A public utility service always running in parallel.

This type of equipment directly consumes electric energy to perform its function.

10 / 20

_______________ equipment utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes.

a. Signaling

b. Utilization

c. Heating

d. Cord-and-plug connected

An attachment plug is commonly used to connect a flexible cord to a power source.

11 / 20

An attachment plug is a(n):

a. A fitting intended to terminate a cord to a box or similar device and reduce the strain points of termination

b. Device designed to open and close a circuit by nonautomatic means

c. Device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle

d. Device that controls AC/DC voltage or AC/DC current, or both, and is used to charge a battery or other energy storage device

The key is the device's capacity to handle overcurrent within its operational range, which starts from its specified rating.

12 / 20

A branch-circuit OCPD is a device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of over-currents between its _______________ and its interrupting rating.

a. Rated voltage

b. Rated over-current rating

c. Rated current

d. Short-circuit

This device protects against overcurrent.

13 / 20

What is a "Circuit Breaker"?

a. emergency

b. A device designed to open and close a circuit automatically or manually and to open the circuit automatically on overcurrent.

c. A fuse used to protect electrical circuits.

d. A device that controls voltage variations in a circuit.

For wide switchgear and control panels, the NEC mandates adequate access to ensure safety and compliance with clearance requirements.

14 / 20

On switchgear and control panels exceeding _______________ in width, there shall be one entrance at each end of the equipment.

a. 4 1/2 feet

b. 6 feet

c. 5 feet

d. 4 feet

Ampacity involves continuous current limits.

15 / 20

What does "Ampacity" refer to?

a. The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

b. The resistance offered by a conductor at rated temperature.

c. The minimum voltage a conductor can handle continuously.

d. The short-circuit current a conductor can sustain.

This involves the final section of a circuit.

16 / 20

What does "Branch Circuit" refer to?

a. The connection between a main panel and subpanel.

b. Conductors feeding a transformer.

c. The circuit conductors between the final overcurrent device and the outlets.

d. A circuit running between panels.

Think about processes that don’t need human action.

17 / 20

How is "Automatic" defined in Article 100?

a. A function requiring minimal human intervention.

b. A process triggered by external signals.

c. Performing a function without the necessity of human intervention.

d. A process triggered by external signals.

Approval requires jurisdictional consent.

18 / 20

What is the meaning of "Approved" in NEC terminology?

a. Listed in an NFPA standard.

b. Acceptable to the authority having jurisdiction.

c. Certified by the manufacturer.

d. Verified by any professional inspector.

This definition applies specifically to conductors used in overhead service installations.

19 / 20

The service conductors between the terminals of the service equipment and a point usually outside the building, clear of building walls, where joined by tap or splice to the service drop or overhead service conductors, is defined as what?

a. Service Entrance Conductors (Underground)

b. Service Equipment

c. Service Drop

d. Service Entrance Conductors (Overhead)

The AHJ oversees code compliance.

20 / 20

What is an "Authority Having Jurisdiction (AHJ)"?

a. A federal agency responsible for all code enforcement.

b. A licensed inspector hired for code compliance.

c. A federal agency responsible for all code enforcement.

d. A third-party testing agency.

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Pos.	Name	Score	Duration
1	ericyd	85 %	17 minutes 41 seconds
2	Guest	75 %	6 minutes 11 seconds
3	Guest	75 %	8 minutes 22 seconds
4	Guest	60 %	13 minutes 52 seconds
5	eep	32 %	1 minutes 6 seconds

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