Article 100-110 Quiz01

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.

Wiring must function as intended without faults.

1 / 20

How does Article 110.7 ensure wiring integrity?

a. Mandating that wiring be free of short circuits and ground faults.

b. Allowing minor faults in low-voltage circuits.

c. Requiring short circuits for testing purposes.

d. Requiring all wiring to be underground.

Accurate torque ensures secure and reliable connections.

2 / 20

What does Article 110.14(D) specify about terminal connection torque?

a. Proper tools or devices must be used to achieve indicated torque values.

b. Torque values are optional for small installations.

c. Connection torque applies only to aluminum conductors.

d. Torque must only be estimated during installation.

Focus on energized servicing requirements.

3 / 20

How does Article 110.16 address arc-flash warnings?

a. Labels are optional if maintenance is infrequent.

b. Warning labels are required for all household appliances.

c. Equipment must have generic warning signs.

d. Equipment likely to require energized maintenance must have arc-flash warnings.

Safety depends on preventing accidental contact with live parts.

4 / 20

What does Article 110.27 mandate about guarding live parts?

a. Live parts must be guarded against accidental contact.

b. Live parts must always be enclosed.

c. Guarding is optional for low-voltage systems.

d. Live parts must be elevated above 10 feet.

Fault current impacts interrupting capability.

5 / 20

What is the purpose of field marking available fault current under
Article 110.24?

a. To warn of high voltage levels.

b. To document overcurrent device settings.

c. To ensure equipment ratings are sufficient for fault conditions.

d. To estimate circuit impedance.

ESS involves storing and supplying energy.

6 / 20

How is "Energy Storage System (ESS)" defined?

a. A capacitor bank for power stability.

b. A battery backup for critical loads.

c. One or more devices capable of storing energy and providing electrical energy into the premises wiring system or a power network.

d. A power generation system.

The fault current is a critical factor.

7 / 20

How does Article 110.9 address interrupting ratings?

a. Ratings apply only to low-voltage circuits.

b. Interrupting ratings must equal or exceed available fault current.

c. Equipment must withstand all electrical faults.

d. Ratings are determined after installation.

Safety and protection are key purposes.

8 / 20

What is an "Enclosure"?

a. A protective layer over conductors.

b. A structure enclosing utility systems.

c. The case or housing surrounding equipment to prevent accidental contact with energized parts.

d. A covering for outdoor electrical installations.

Identification ensures safety in multi-phase systems.

9 / 20

What does Article 110.15 require for high-leg conductors in a 4-wire
delta system?

a. They must be grounded.

b. They must be marked with a yellow stripe.

c. They require no special marking.

d. They must be marked with an orange finish.

Markings must be clear and long-lasting.

10 / 20

What does Article 110.21(B) specify about field-applied hazard
markings?

a. Only colors are required for warning labels.

b. They must be handwritten.

c. They are optional for small installations.

d. They must be durable and convey effective warnings.

Secure installation ensures stability and safety.

11 / 20

How does Article 110.13 address equipment mounting?

a. Wood plugs are allowed for anchoring in concrete.

b. Temporary mounting is permissible during installation.

c. Equipment can be mounted on any surface.

d. Equipment must be firmly secured.

Environment-specific identification is essential.

12 / 20

What does Article 110.11 specify regarding deteriorating agents?

a. Deteriorating effects are not a concern for electrical equipment.

b. Equipment must be identified for the operating environment.

c. All equipment must be installed indoors.

d. Conductors must withstand all environmental conditions.

Grounding ensures electrical stability and safety

13 / 20

What does "Grounded" mean?

a. Connected to the neutral conductor.

b. Electrically connected to earth or some conductive body serving as earth.

c. Connected to earth or a conductive body serving as earth.

d. Connected to a protective device.

Approval is determined by an overseeing authority

14 / 20

What does "Approved" equipment mean in the context of NEC Article
110?

a. Verified through inspection alone.

b. Certified by any testing laboratory.

c. Manufactured by a licensed supplier.

d. Acceptable to the authority having jurisdiction (AHJ).

Connections depend on the lowest-rated component.

15 / 20

What are the temperature limitations for conductor connections in
Article 110.14?

a. Conductors must always operate below 60°C.

b. Ratings are not relevant to terminations.

c. Conductor temperatures must not exceed the lowest-rated component.

d. Conductors are rated only for high-temperature environments.

Protection must match the equipment's enclosure.

16 / 20

What is required for unused openings in equipment per Article
110.12(A)?

a. They must be closed to provide equivalent protection.

b. Only metallic plugs are acceptable.

c. They must be permanently sealed.

d. They can remain open if indoors.

Identification helps avoid confusion during operation.

17 / 20

What does Article 110.22 require for disconnecting means
identification?

a. It must legibly indicate its purpose.

b. Identification should be visible only during servicing.

c. Identification is only required for industrial settings.

d. It must use engraved plaques.

The article sets broad standards for electrical installations.

18 / 20

What is covered under Article 110?

a. General requirements for installation, use, and access to electrical conductors and equipment.

b. Requirements for grounding electrodes.

c. General requirements for overcurrent protection.

d. Provisions for motor control systems.

It compares demand to load capacity.

19 / 20

What is a "Demand Factor"?

a. The ratio of total connected load to maximum demand.

b. The ratio of maximum demand to total connected load.

c. The percentage of time a load is in operation.

d. The ratio of current to voltage in a circuit.

They are not required for temporary installations.

20 / 20

What is required for enclosures in damp or wet locations under Article
110.28?

a. They must be elevated off the ground.

b. They must meet specific enclosure type ratings.

c. They must be waterproof.

d. They are not required for temporary installations.

Your score is

Exit

Rate & Review

Thank you for taking the time to leave us a review! Your feedback is greatly appreciated and helps us improve our services.

Pos.	Name	Score	Duration
1	jalva292	100 %	12 minutes 12 seconds
2	ericyd	95 %	3 minutes 3 seconds
3	Guest	95 %	4 minutes 15 seconds
4	Guest	95 %	8 minutes 42 seconds
5	Guest	85 %	13 minutes 7 seconds
6	jalva292	85 %	20 minutes 1 seconds
7	Guest	80 %	5 minutes 2 seconds
8	Guest	80 %	6 minutes 3 seconds
9	Guest	75 %	3 minutes 35 seconds
10	Guest	65 %	6 minutes 13 seconds

Electrician

Article 100-110 Quiz02

Article 100-110 Quiz03

Leave a Reply Cancel reply

Electrician

Electrician

Report a question

Article 100-110 Quiz01

Article 100-110 Quiz02

Article 100-110 Quiz03

Leave a Reply Cancel reply