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 p p p



MILLER/SANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712; UNIT 1: INTRODUCTION TO THE
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NATIONAL ELECTRICAL CODE®
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TABLE OF CONTENTS P P




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


b. Answer: 1911 p




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 p p p p


b. Answer: A p




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


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




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


b. Answer: 1975 p




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 p p p p


b. Answer: 90.2(A) p




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


b. Answer: 1897 p




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,website, pin pwhole por pin ppart.

,Solution pand pAnswer pGuide: pMiller/Sandefur, pIllustrated pGuide pto pthe pNEC®, p©2024, p9780357766712, pUnit p1: pIntroduction pto pthe pNational pElectrical pCode®

7. Informative annexes are not part of the requirements of the NEC but are included for
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only. p


a. NEC® Reference: 90.3 p p


b. Answer: informational purposes p p




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 p p p


b. Answer: New York City p p p




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


b. Answer: 9 p




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




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) p p


b. Answer: instructions p




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website, pin pwhole por pin ppart.

, Solution pand pAnswer pGuide: pMiller/Sandefur, pIllustrated pGuide pto pthe pNEC®, p©2024, p9780357766712, pUnit p2: pDefinitions®



Solution and Answer Guide p p p



MILLER/SANDEFUR, ILLUSTRATED GUIDE TO THE NEC®, 21E, ©2024, 9780357766712; UNIT 2:
P P P P P P P P P P



DEFINITIONS®
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TABLE OF CONTENTS P P




Unit 2 Competency Test ..................................................................................................................... 1
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UNIT 2 COMPETENCY TEST
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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)
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b. Answer: general purpose p p




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




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 p p


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




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) p p p p p


b. Answer: periodic duty p p




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) p p p p p p


b. Answer: main bonding jumper p p p




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