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

Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 1: Introduction to the National Electrical Code®
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Solution and Answer Guide p6 p6 p6




MILLER/SANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712; UNIT 1: P6 P6 P 6 P6 P 6 P6 P6 P6 P 6 P6




INTRODUCTION TO THE NATIONAL ELECTRICAL CODE®
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TABLE OF CONTENTS P6 P6




Unit 1 Competency Test ............................................................................................................................. 1
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UNIT 1 COMPETENCY TEST P6 P6 P6




1. The National Fire Protection Association has acted as sponsor of the National
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Electrical Code since
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a. NEC® Reference: Page 1 p6 p6 p6




b. Answer: 1911 p6




2. Informative Annex provides a list of product safety standards used
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for product listing where that listing is required by the NEC.
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a. NEC® Reference: Informative Annex A p6 p6 p6 p6




b. Answer: A p6




3. Which chapters in the NEC apply generally to all installations?
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a. NEC® Reference: 90.3 p6 p6




b. Answer: Chapters 1, 2, 3, and 4 p6 p6 p6 p6 p6 p6




4. Every three years, the National Electrical Code is revised, but the Code has only been
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on a three-year revision cycle since
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a. NEC® Reference: Page 1 p6 p6 p6




b. Answer: 1975 p6




5. The purpose of the National Electrical Code is the practical safeguarding of
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from hazards arising from the use of electricity.
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a. NEC® Reference: persons and property p6 p6 p6 p6




b. Answer: 90.2(A) p6




6. The original Code document was developed
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united efforts of various insurance, electrical, architectural, and allied interests.
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a. NEC® Reference: Page 1 p6 p6 p6




b. Answer: 1897 p6




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6
1
website, in whole or in part.
p6 p6 p6 p6 p6

,Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 1: Introduction to the National Electrical Code®
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7. Informative annexes are not part of the requirements of the NEC but are included for
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only. p6



a. NEC® Reference: 90.3 p6 p6




b. Answer: informational purposes p6 p6




8. What city was home to the first central-station electric generating plant developed
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by Thomas A. Edison?
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a. NEC® Reference: Page 2 p6 p6 p6




b. Answer: New York City p6 p6 p6




9. Chapter consists of tables that are applicable as referenced.
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a. NEC® Reference: 90.3 p6 p6




b. Answer: 9 p6




10. In the NEC, UL is the abbreviation for
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a. NEC® Reference: Annex I, footnote under Table I.3 p6 p6 p6 p6 p6 p6 p6




b. Answer: Underwriters Laboratories p6 p6




11. Equipment that is listed, labeled, or both, or identified for a use shall be installed
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and used in accordance with any
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identification.
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a. NEC® Reference: 110.3(B) p6 p6




b. Answer: instructions p6




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6
2
website, in whole or in part.
p6 p6 p6 p6 p6

, Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 2: Definitions®
p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6




Solution and Answer Guide p6 p6 p6




MILLER/SANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712; P6 P6 P6 P6 P6 P6 P6 P6




UNIT 2: DEFINITIONS®
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TABLE OF CONTENTS P6 P6




Unit 2 Competency Test ............................................................................................................................. 1
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UNIT 2 COMPETENCY TEST P6 P6 P6




1. A(n) branch circuit supplies two or more receptacles or outlets
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for lighting and appliances.
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a. NEC® Reference: Article 100 (Branch-Circuit, General Purpose) p6 p6 p6 p6 p6 p6




b. Answer: general purpose p6 p6




2. is the largest amount of current capable of being delivered at p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6



p6 a point on the electrical system during a short-circuit condition.
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a. NEC® Reference: Article 100 (Fault Current, Available) p6 p6 p6 p6 p6 p6




b. Answer: Available fault current p6 p6 p6




3. A(n) branch circuit consists of two or more ungrounded
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conductors having a potential difference between them, and a grounded conductor
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having equal potential difference between it and each ungrounded conductor of the
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circuit and that is connected to the neutral or grounded conductor of the system.
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a. NEC® Reference: multiwire p6 p6




b. Answer: Article 100 (Branch-Circuit, Multiwire) p6 p6 p6 p6




4. An intermittent operation in which load conditions are regularly recurrent is the
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definition of
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a. NEC® Reference: Article 100 (Duty, Periodic) p6 p6 p6 p6 p6




b. Answer: periodic duty p6 p6




5. The is the connection between the grounded-circuit conductor
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and the equipment grounding conductor at the service.
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a. NEC® Reference: Article 100 (Bonding Jumper, Main) p6 p6 p6 p6 p6 p6




b. Answer: main bonding jumper p6 p6 p6




© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6
1
website, in whole or in part.
p6 p6 p6 p6 p6

, Solution and Answer Guide: Miller/Sandefur, Illustrated Guide to the NEC®, ©2024, 9780357766712, Unit 2: Definitions®
p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6 p6




6. A(n) p6 is used to connect the system grounded conductor or p 6 p6 p6 p6 p6 p6 p6 p6 p6



the equipment to a grounding electrode or to a point on the grounding electrode
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system.
p6



a. NEC® Reference: Article 100 (Grounding Electrode Conductor)
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b. Answer: grounding electrode conductor p6 p6 p6




7. Rainproof, raintight, or watertight equipment can fulfill the requirements for
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where varying weather conditions other than wetness, such p 6 p6 p6 p6 p6 p6 p6 p6



as snow, ice, dust, or temperature extremes, are not a factor.
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a. NEC® Reference: Article 100 (Weatherproof: Informational Note)
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b. Answer: weatherproof p6




8. A(n) p6 is an intentionally constructed, low-impedance electrically p 6 p6 p6 p6 p6 p6



conductive path designed and intended to carry current during ground-fault events
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from the point of a ground fault on a wiring system to the electrical supply source
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and that facilitates the operation of the overcurrent protective device or ground-fault
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detectors.
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a. NEC® Reference: Article 100 (Ground Fault Current Path, Effective)
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b. Answer: effective ground-fault current path p6 p6 p6 p6




9. A(n) p6 is a manual, nonautomatic, or automatic operated device p 6 p6 p6 p6 p6 p6 p6 p6



used in conjunction with a transfer switch to provide a means of directly connecting
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load conductors to a power source and of disconnecting the transfer switch.
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a. NEC® Reference: Article 100 (Transfer Switch, Bypass Isolation)
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b. Answer: bypass isolation transfer switch p6 p6 p6 p6




10. A surface, flush, or freestanding assemblage with a raceway, fittings, or other
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enclosure provided with one or more receptacles, for the purpose of supplying power
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to utilization equipment is called a(n).
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a. NEC® Reference: Article 100 (Multioutlet Assembly)
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b. Answer: multioutlet assembly p6 p6




11. A raceway encased in 4 in. (102 mm) of concrete on the ground floor (in direct contact
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with the earth) shall be considered a(n)
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a. NEC® Reference: Article 100 (Location, Wet)
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b. Answer: wet p6




12. A(n) p6 may consist of one or more sensing elements integral with p 6 p6 p6 p6 p6 p6 p6 p6 p6 p6



the motor-compressor and an external control device.
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a. NEC® Reference: Article 100 (Thermal Protector: Informational Note)
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b. Answer: thermal protector p6 p6