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Solution and Answer Guide Illustrated Guide to the National Electrical Code 9th Edition by Charles R. Miller Chapter 1-19 Exam (1 2) €16,57
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Solution and Answer Guide Illustrated Guide to the National Electrical Code 9th Edition by Charles R. Miller Chapter 1-19 Exam (1 2)

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Solution and Answer Guide Illustrated Guide to the National Electrical Code 9th Edition by Charles R. Miller Chapter 1-19 Exam (1 2) The NEC 9th Edition by Charles R. Miller

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Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 1: Introduction to the National Electrical Code®



Solution and Answer Guide
MILLER/S ANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712; UNIT 1:
INTRODUCTION TO THE NATIONAL E LECTRICAL CODE®


TABLE OF CONTENTS
Unit 1 Competency Test ............................................................................................................................. 1




UNIT 1 COMPETENCY TEST
1. The National Fire Protection Association has acted as sponsor of the National Electrical
Code since__________________.
a. NEC® Reference: Page 1
b. Answer: 1911

2. Informative Annex _______________ provides a list of product safety standards used for
product listing where that listing is required by the NEC.
a. NEC® Reference: Informative Annex A
b. Answer: A

3. Which chapters in the NEC apply generally to all installations?
a. NEC® Reference: 90.3
b. Answer: Chapters 1, 2, 3, and 4

4. Every three years, the National Electrical Code is revised, but the Code has only been on a
three-year revision cycle since _______________.
a. NEC® Reference: Page 1
b. Answer: 1975

5. The purpose of the National Electrical Code is the practical safeguarding of ___________
from hazards arising from the use of electricity.
a. NEC® Reference: persons and property
b. Answer: 90.2(A)

6. The original Code document was developed _______________ in as a result of the united
efforts of various insurance, electrical, architectural, and allied interests.
a. NEC® Reference: Page 1
b. Answer: 1897




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible 1
website, in whole or in part.

,Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 1: Introduction to the National Electrical Code®

7. Informative annexes are not part of the requirements of the NEC but are included for
_______________ only.
a. NEC® Reference: 90.3
b. Answer: informational purposes

8. What city was home to the first central-station electric generating plant developed by
Thomas A. Edison?
a. NEC® Reference: Page 2
b. Answer: New York City

9. Chapter _______________ consists of tables that are applicable as referenced.
a. NEC® Reference: 90.3
b. Answer: 9

10. In the NEC, UL is the abbreviation for _______________.
a. NEC® Reference: Annex I, footnote under Table I.3
b. Answer: Underwriters Laboratories

11. Equipment that is listed, labeled, or both, or identified for a use shall be installed and
used in accordance with any _______________ included in the listing, labeling, or
identification.
a. NEC® Reference: 110.3(B)
b. Answer: instructions




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible 2
website, in whole or in part.

, Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 2: Definitions®



Solution and Answer Guide
MILLER/S ANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712;
UNIT 2: DEFINITIONS®


TABLE OF CONTENTS
Unit 2 Competency Test ............................................................................................................................. 1




UNIT 2 COMPETENCY TEST
1. A(n) __________________ branch circuit supplies two or more receptacles or outlets for
lighting and appliances.
a. NEC® Reference: Article 100 (Branch-Circuit, General Purpose)
b. Answer: general purpose

2. __________________ is the largest amount of current capable of being delivered at a
point on the electrical system during a short-circuit condition.
a. NEC® Reference: Article 100 (Fault Current, Available)
b. Answer: Available fault current

3. A(n) __________________ branch circuit consists of two or more ungrounded conductors
having a potential difference between them, and a grounded conductor having equal
potential difference between it and each ungrounded conductor of the circuit and that is
connected to the neutral or grounded conductor of the system.
a. NEC® Reference: multiwire
b. Answer: Article 100 (Branch-Circuit, Multiwire)

4. An intermittent operation in which load conditions are regularly recurrent is the definition
of __________________.
a. NEC® Reference: Article 100 (Duty, Periodic)
b. Answer: periodic duty

5. The __________________ is the connection between the grounded-circuit conductor and
the equipment grounding conductor at the service.
a. NEC® Reference: Article 100 (Bonding Jumper, Main)
b. Answer: main bonding jumper




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible 1
website, in whole or in part.

, Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 2: Definitions®

6. A(n) __________________ is used to connect the system grounded conductor or the
equipment to a grounding electrode or to a point on the grounding electrode system.
a. NEC® Reference: Article 100 (Grounding Electrode Conductor)
b. Answer: grounding electrode conductor

7. Rainproof, raintight, or watertight equipment can fulfill the requirements for
__________________ where varying weather conditions other than wetness, such as
snow, ice, dust, or temperature extremes, are not a factor.
a. NEC® Reference: Article 100 (Weatherproof: Informational Note)
b. Answer: weatherproof

8. A(n) __________________ is an intentionally constructed, low-impedance electrically
conductive path designed and intended to carry current during ground-fault events from
the point of a ground fault on a wiring system to the electrical supply source and that
facilitates the operation of the overcurrent protective device or ground-fault detectors.
a. NEC® Reference: Article 100 (Ground Fault Current Path, Effective)
b. Answer: effective ground-fault current path

9. A(n) __________________ is a manual, nonautomatic, or automatic operated device used
in conjunction with a transfer switch to provide a means of directly connecting load
conductors to a power source and of disconnecting the transfer switch.
a. NEC® Reference: Article 100 (Transfer Switch, Bypass Isolation)
b. Answer: bypass isolation transfer switch

10. A surface, flush, or freestanding assemblage with a raceway, fittings, or other enclosure
provided with one or more receptacles, for the purpose of supplying power to utilization
equipment is called a(n).
a. NEC® Reference: Article 100 (Multioutlet Assembly)
b. Answer: multioutlet assembly

11. A raceway encased in 4 in. (102 mm) of concrete on the ground floor (in direct contact with
the earth) shall be considered a(n) __________________ location.
a. NEC® Reference: Article 100 (Location, Wet)
b. Answer: wet

12. A(n) __________________ may consist of one or more sensing elements integral with the
motor-compressor and an external control device.
a. NEC® Reference: Article 100 (Thermal Protector: Informational Note)
b. Answer: thermal protector




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible 2
website, in whole or in part.

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