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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.

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

1 / 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.

Think about processes that don’t need human action.

2 / 20

How is "Automatic" defined in Article 100?

Ampacity involves continuous current limits.

3 / 20

What does "Ampacity" refer to?

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

4 / 20

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

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

5 / 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.

Duration is key here.

6 / 20

How is "Continuous Load" defined?

Focus on detecting and mitigating electrical arcs.

7 / 20

What is the primary function of an "Arc-Fault Circuit Interrupter (AFCI)"?

Think about photovoltaic systems.

8 / 20

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

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

9 / 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.

This definition includes multiple fixture types.

10 / 20

What is a "Bathroom" as defined in Article 100?

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

11 / 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?

This involves the final section of a circuit.

12 / 20

What does "Branch Circuit" refer to?

This definition includes control of motor speed.

13 / 20

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

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

14 / 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.

The minimum working distance is determined by the voltage and whether live or grounded parts are present on the opposite side of the workspace.

15 / 20

A 120-208V 3-phase panel with exposed live parts on one side, and no live or grounded parts on the other side of the working space, must have a minimum clear working distance of _______________ in front of the panel.

This relates to ease of physical access for maintenance.

16 / 20

What does the term "Accessible" as applied to equipment mean?

Backup power is a key concept here.

17 / 20

What is an "Alternate Power Source"?

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

18 / 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.

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

19 / 20

An attachment plug is a(n):

It ensures electrical continuity.

20 / 20

What does "Bonded" mean?

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