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®


TABLE OF 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 .
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, 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

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


TABLE OF CONTENTS

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



UNIT2COMPETENCY TEST

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.
a. NEC®Reference: Article 100 (Fault Current, 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
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 .
a. NEC®Reference:Article100(Duty,Periodic)
b. Answer:periodic duty

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

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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:Article100 (GroundingElectrodeConductor)
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 (GroundFault Current Path, Effective)
b. Answer: effectiveground-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: Article100 (TransferSwitch,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:Article100 (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:Article100(ThermalProtector:InformationalNote)
b. Answer:thermalprotector