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

1|Pa g e


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 Product Safety Standards
Used For Product Listing Where That Listing Is Required By The NEC.
a. NEC® Reference: Informative Annex A
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: Persons And Property
b. Answer:90.2(A)

6. The Original Code Document Was Developed In As A Result Of
The United Efforts Of Various Insurance, Electrical, Architectural, And Allied
Interests.
a. NEC® Reference: Page 1
b. Answer:1897

,2|Pa g e
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

,3|PA G E
Solution And Answer Guide
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, General Purpose)
b. Answer: General Purpose

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 Fault Current

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 The Connection Between The Grounded-Circuit
Conductor And The Equipment Grounding Conductor At The Service.
a. NEC® Reference: Article 100 (Bonding Jumper, Main)
b. Answer: Main Bonding Jumper

, 4|P a g e
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 (Grounding Electrode Conductor)
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: Effective Ground-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 (Transfer Switch, 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(Thermal Protector: Informational Note)
b. Answer: Thermal Protector