Applied Codeology Based On The 2005 National Electric Code

by NJATC, NJATC

• ISBN13: 9781401879938
• ISBN10: 1401879934
• Edition: 1st
• Format: Hardcover
• Copyright: 2004-12-29
• Publisher: CENGAGE Delmar Learning

Summary

Designed as a "how to" guide on reading and interpreting the 2005 National Electrical Code®, Applied Codeology is a working companion to the Code®, written by the experts at the NJATC. Apprentices, journeyman, contractors, engineers, designers, and estimators alike will benefit from this positive, systematic approach to understanding the Code®. Readers are encouraged to first examine a section from the Code® Book before referring to the correlating annotations in this manual. Where questions are used to illustrate the "applied codeology" system, users are requested to locate the answer in the suggested Code® article before checking the answer in this book. This methodical handling of and practice using the Code® Book encourages proficiency in users, and soon they will be able to decide where the answer is located before the Code® Book is even opened. The result is better electrical installations through a higher Code understanding, as well as optimization of the Code® Book as a first-rate tool of the trade.

Table of Contents

Preface	xiii
The Development of the National Electrical Code®	2	(10)
The NEC® Process	3	(1)
Sequence of Events	3	(3)
The Proposal Stage	3	(2)
The Comment Stage	5	(1)
The NFPA Annual Meeting	6	(1)
Appeals to the Standards Council	6	(1)
Committee Membership Classifications	6	(4)
Summary	10	(1)
Review Questions	11	(1)
Basic Building Block #1: Table of Contents	12	(10)
NEC® Table of Contents	13	(8)
The Structure of the Table of Contents	13	(8)
Summary	21	(1)
Review Questions	21	(1)
Basic Building Block #2: Section 90.3	22	(16)
The Arrangement of the NEC®, Section 90.3	23	(12)
General	23	(1)
Wiring and Protection	23	(1)
Wiring Methods and Materials	24	(2)
Equipment for General Use	26	(1)
Special Occupancies	27	(2)
Special Equipment	29	(1)
Special Conditions	30	(2)
Communications Systems	32	(2)
Tables and Annexes A through G	34	(1)
Summary	35	(1)
Review Questions	36	(2)
Basic Building Block #3: NEC® Structure	38	(16)
NEC® Organization	39	(7)
The Outline Form of the NEC®: Chapters	39	(1)
The Outline Form of the NEC®: Articles	39	(1)
The Outline Form of the NEC®: Parts	39	(2)
The Outline Form of the NEC®: Sections	41	(4)
Tables	45	(1)
Annexes	45	(1)
Mandatory Rules, Permissive Rules, and Explanatory Material	46	(6)
Mandatory Language	46	(1)
Permissive Text	47	(1)
Units of Measurement	48	(1)
Extract Material	48	(1)
Cross-Reference Tables	49	(1)
Outlines, Diagrams, and Drawings	50	(2)
Summary	52	(1)
Review Questions	52	(2)
Basic Building Block #4: Article 100: The Language of the NEC®	54	(6)
NEC® Language: Article 100	55	(3)
NEC® Language: Definitions	55	(3)
Summary	58	(1)
Review Questions	58	(2)
Codeology Fundamentals	60	(18)
Marking Up Your Codebook	61	(4)
Mark Up Your Table of Contents	61	(1)
Highlighting	62	(1)
Tabs	63	(1)
Underlining	64	(1)
Clues and Key Words	65	(2)
The Four Basic Building Blocks of the Codeology Method	67	(1)
Getting in the Right Chapter, Article, and Part	68	(7)
Introduction to the Fundamentals of Codeology	68	(7)
Fundamental Steps Using Codeology	75	(2)
Summary	77	(1)
Review Questions	77	(1)
Article 90, The Introduction to the NEC®	78	(12)
NEC® How to Begin, Article 90 Introduction	79	(1)
Article 90 Introduction	79	(9)
Introduction: What is the purpose of the NEC®?	79	(2)
Scope: Where does the NEC® apply?	81	(1)
Scope (A) Covered	81	(3)
Code Arrangement: How do these chapters apply?	84	(1)
Enforcement: How is this code to be enforced?	84	(1)
Mandatory Rules, Permissive Rules, and Explanatory Material: When are the requirements of the NEC® mandatory?	84	(1)
Formal Interpretations: Is there a process for formal interpretations or is the local AHJ the ultimate authority?	85	(1)
Examination of Equipment for Safety: Does the NEC® require that all listed factory-installed internal wiring of electrical equipment be inspected upon installation?	85	(1)
Wiring Planning: Does the NEC® provide requirements for the future expansion of an electrical installation?	85	(2)
Units of Measurement: Why does the NEC® use both inch-pound and metric units of measurement?	87	(1)
Notations Used in the NEC®	88	(1)
Summary	88	(1)
Review Questions	89	(1)
Chapter 1 of the NEC®, General	90	(18)
NEC®: Chapter 1---General	91	(3)
Article 100 Definitions	91	(3)
Article 110 Requirements for Electrical Installations	94	(1)
Part I General	94	(5)
Scope	94	(1)
Approval	94	(1)
Examination, Identification, Installation, and Use of Equipment	94	(1)
Conductors	95	(1)
Conductor Sizes	95	(1)
Interrupting Rating	95	(1)
Circuit Impedance and Other Characteristics	95	(1)
Mechanical Execution of Work	96	(1)
Mounting and Cooling of Equipment	96	(1)
Electrical Connections	96	(1)
High-Leg Marking	97	(1)
Flash Protection	97	(1)
Marking	98	(1)
Identification of Disconnecting Means	99	(1)
Part II 600 Volts, Nominal or Less	99	(2)
Spaces About Electrical Equipment	99	(2)
Part III Over 600 Volts, Nominal	101	(1)
Part IV Tunnel Installations Over 600 Volts, Nominal	102	(1)
Part V Manholes and Other Electric Enclosures Intended for Personnel Entry, All Voltages	102	(1)
Key Words/Clues for Chapter 1---General	102	(1)
Summary	103	(1)
Review Questions	103	(1)
Practice Problems	103	(5)
Chapter 2 of the NEC®, ``Plan''	108	(26)
Wiring	109	(9)
Article 200 Use and Identification of Grounded Conductors	111	(1)
Article 210 Branch Circuits	112	(1)
Article 215 Feeders	113	(1)
Article 220 Branch Circuit, Feeder and Service Calculations	114	(1)
Article 225 Outside Branch Circuits and Feeders	115	(1)
Article 230 Services	116	(2)
Protection	118	(7)
Article 240 Overcurrent Protection	119	(2)
Article 250 Grounding and Bonding	121	(3)
Article 280 Surge Arrestors	124	(1)
Article 285 Transient Voltage Surge Suppressors: TVSSs	125	(1)
Key Words/Clues for Chapter 2, ``Plan''	125	(1)
Think Plan and Go to Chapter 2	126	(1)
Summary	126	(1)
Review Questions	126	(2)
Practice Problems	128	(6)
Chapter 3 of the NEC®, ``Build''	134	(30)
NEC®: Chapter 3 ``Build''	135	(1)
Wiring Methods	136	(5)
Wiring Materials	141	(2)
General Information for All Wiring Methods and Materials	143	(1)
Article 300 Wiring Methods	143	(1)
Conductors	144	(3)
Article 310 Conductors for General Wiring	144	(2)
Article 310 Conductors for General Wiring	146	(1)
Cabinets, Boxes, Fittings, and Meter Socket/Handhole Enclosures	147	(3)
Article 312 Cabinets, Cutout Boxes, and Meter Socket Enclosures	147	(1)
Article 314 Outlet, Device, Pull and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures	148	(2)
Cable Assemblies and Raceways	150	(5)
Similar Article Layout for Usability	150	(1)
Common Article Format	151	(1)
Article 3XX	151	(1)
Cable Assemblies	152	(1)
Raceways, Circular Metal Conduit	152	(1)
Raceways, Circular Nonmetallic Conduit	152	(1)
Raceways, Circular Metallic Tubing	153	(1)
Raceways, Circular Nonmetallic Tubing	153	(1)
Factory-Assembled Power Distribution Systems	153	(1)
Raceways Other Than Circular	154	(1)
Surface-Mounted Nonmetallic Branch Circuit Extension	154	(1)
Support Systems for Cables/Raceways	154	(1)
Open-Type Wiring Methods	154	(1)
Key Words/Clues for Chapter 3, ``Build''	155	(1)
Wiring Methods	155	(1)
Wiring Materials	155	(1)
Think Build and Go To Chapter 3	155	(1)
Summary	155	(1)
Review Questions	156	(1)
Practice Problems	156	(8)
Chapter 4 of the NEC®, ``Use''	164	(20)
NEC®: Chapter 4 ``Use''	165	(1)
Categorization of Chapter 4	166	(10)
Connection Wiring of Utilization Equipment	166	(1)
Control of Utilization Equipment	167	(3)
Utilization Equipment	170	(2)
Generation of Power for Utilization Equipment	172	(1)
Transformation of Systems for Utilization Equipment	172	(3)
Storage of Power for Utilization Equipment	175	(1)
Equipment Over 600-Volts, Nominal	175	(1)
Key Words/Clues for Chapter 4, ``Use''	176	(1)
Summary	176	(2)
Review Questions	178	(1)
Practice Problems	178	(6)
Chapters 5, 6, and 7 of the NEC®, Special	184	(30)
Arrangement of the Special Chapters	185	(1)
The General, Plan, Build, and Use Stages Are Modified and Supplemented By Chapters 5, 6, And 7	185	(1)
NEC® Chapter 5 ``Special Occupancies''	186	(1)
Hazardous Locations	187	(6)
Zone Classification System	193	(3)
Health Care Facilities	196	(1)
Assembly Occupancies for 100 or More Persons	196	(1)
Entertainment Venues	197	(1)
Agricultural Buildings for Poultry, Livestock, and Fish	198	(1)
Manufactured Buildings, Dwellings, and Recreational Structures	198	(1)
Structures on or Adjacent to Bodies of Water	199	(1)
Temporary Installations	199	(1)
NEC® Chapter 6 ``Special Equipment''	200	(5)
NEC® Chapter 7 ``Special Conditions''	205	(2)
Summary	207	(1)
Review Questions	207	(1)
Practice Problems	207	(7)
Chapter 8 of the NEC®, Communications Systems	214	(8)
NEC®: Chapter 8 Communications Systems	215	(3)
Article 800 Communications Circuits	216	(1)
Article 810 Radio and Television Equipment	217	(1)
Article 820 Community Antenna Television and Radio Distribution Systems	217	(1)
Article 830 Network Powered Broadband Communications Systems	217	(1)
Summary	218	(1)
Review Questions	219	(1)
Practice Problems	219	(3)
Chapter 9 of the NEC®, Tables and Annexes	222	(6)
Tables	223	(2)
Table 1: Percent of Cross-Section of Conduit and Tubing for Conductors (Conduit Fill)	224	(1)
Table 2: Radius of Conduit and Tubing Bends	224	(1)
Table 4: Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9) (Conduit Fill, Tables for All Circular Raceways)	224	(1)
Table 5: Dimensions of Insulated Conductors and Fixture Wires	224	(1)
Table 5A: Compact Aluminum Building Wire Nominal Dimensions and Areas	224	(1)
Table 8: Conductor Properties	225	(1)
Table 9: Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F)---Three Single Conductors in Conduit	225	(1)
Table 11A: Class 2 and Class 3 Alternating Current Power Source Limitations and Table 11B: Class 2 and Class 3 Direct Current Power Source Limitations	225	(1)
Table 12A: PLFA Alternating Current Power Source Limitations and Table 12B: PLFA Direct Current Power Source Limitations	225	(1)
Annexes	225	(2)
Annex A: Product Safety Standards	225	(1)
Annex B: Application Information for Ampacity Calculation	226	(1)
Annex C: Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size	226	(1)
Annex D: Examples	226	(1)
Annex E: Types of Construction	226	(1)
Annex F: Cross-References Tables	226	(1)
Annex G: Administration and Enforcement	226	(1)
Summary	227	(1)
Review Questions	227	(1)
Test Preparation	228	(7)
Electrical Contractor, Journeyman/Master Electrician and Inspector Exams Based on the NEC®	229	(1)
Types of Exams	229	(1)
Written	229	(1)
Computer	230	(1)
Reading Each Question	230	(1)
Types of Questions	230	(1)
General Knowledge Questions	230	(1)
Multiple-Choice Questions	230	(1)
Time Management	231	(2)
Scenario 1	231	(1)
Scenario 2	231	(2)
Summary	233	(1)
Review Questions	233	(2)
Glossary	235	(4)
Index	239