Solution and Answer Guide to the National Electrical Code – 9th Edition by Charles R. Miller | Complete Solutions for Chapters 1–19

01
S0
LU
AP

,1|P age


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®


TABLE OF CONTENTS

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

UNIT1COMPETENCY TEST


1. The National Fire Protection Association has acted as sponsor of the
LU

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.
S0

a. NEC®Reference:InformativeAnnexA
b. Answer:A

3. Which chapters in the NEC apply generally to all installations?
a. NEC®Reference: 90.3
01
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: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

,2|P age
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
AP
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.
LU
a. NEC®Reference: 110.3(B)
b. Answer:instructions
S0
01

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


TABLE OF CONTENTS

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



UNIT2COMPETENCY TEST
AP
1. A(n) branch circuit supplies two or more receptacles or
outlets for lighting and appliances.
a. NEC®Reference:Article100 (Branch-Circuit,GeneralPurpose)
b. Answer:generalpurpose

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

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
S0
circuit and that is connected to the neutral or grounded conductor of the system.
a. NEC®Reference: multiwire
b. Answer: Article100 (Branch-Circuit,Multiwire)

4. An intermittent operation in which load conditions are regularly recurrent
is the definition of .
01
a. NEC®Reference:Article100(Duty,Periodic)
b. Answer:periodiczxduty

5. The is theconnection between the grounded-circuit conductor
and the equipment grounding conductor at the service.
a. NEC®Reference: Article 100 (BondingzxJumper, Main)
b. Answer: mainbonding jumper