SOLUTION AND ANSWER GUIDE TO THE NATIONAL ELECTRICAL CODE 9TH EDITION BY CHARLES R. MILLER CHAPTER 1-19 FULL MANUAL WITH VERIFIED SOLUTIONS

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SOLUTION AND ANSWER GUIDE TO THE NATIONAL
ELECTRICAL CODE 9TH EDITION BY CHARLES R. MILLER
CHAPTER 1-19 FULL MANUAL WITH VERIFIED
SOLUTIONS

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

INTRODUCTION TO THE NATIONAL ELECTRICAL CODE®


TABLEOF CONTENTS

Unit 1 Competency Test ......................................................................................................... 1



UNIT1COMPETENCY 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 productsafetystandards
used for product listing where that listing is required by the NEC.
a. NEC®Reference:InformativeAnnexA
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 .

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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:personsand property
b. Answer:90.2(A)

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

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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, footnoteunder 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

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Solutionand t AnswerGuide
MILLER/SANDEFUR, ILLUSTRATED GUIDE
T T T TO T THE T NEC®, 21E,©2024, 9780357766712; UNIT 2:
T T T T T


DEFINITIONS®
T




TABLEOF CONTENTS
T




Unit t 2 t Competency t Test ........................................................................................................ 1



UNIT2COMPETENCY TEST T




1. A(n) t branch tcircuit tsupplies ttwo tor tmoretreceptacles
tor toutlets tfor tlighting tand tappliances.


a. NEC®Reference:Article100 t(Branch-Circuit,GeneralPurpose)
b. Answer:generalpurpose

2. is tthetlargest tamount tof tcurrent tcapable tof tbeing tdelivered tat
ta tpoint ton tthe telectrical tsystem tduring ta tshort-circuit tcondition.


a. NEC®Reference:tArticlet100 t (Fault Current, tAvailable)
b. Answer: tAvailable tfaultcurrent

3. A(n) t branch tcircuit tconsists tof ttwo tor tmore tungrounded
tconductors thaving ta tpotential tdifference tbetween tthem, tand ta tgrounded

tconductor thaving tequal tpotential tdifference tbetween tit tand teach tungrounded

tconductor tof tthe tcircuit tand tthat tis tconnected tto tthe tneutral tor tgrounded

tconductor tof tthe tsystem.


a. NEC®Reference: tmultiwire
b. Answer: tArticle100 t(Branch-Circuit,Multiwire)

4. An tintermittent toperation tin twhich tload tconditions tare tregularly
trecurrent tis tthe tdefinition tof t .
a. NEC®Reference:Article100(Duty,Periodic)
b. Answer:periodic duty

5. The t is ttheconnection tbetween tthetgrounded-circuit
tconductor tand tthe tequipment tgrounding tconductor tat tthe tservice.


a. NEC®Reference: tArticlet100 t(Bonding Jumper,tMain)
b. Answer: tmainbonding tjumper