McGraw-Hill's National Electrical Code 2020 Handbook, 30th Edition

McGraw-Hill's National Electrical Code 2020 Handbook, 30th Edition

by Frederic P. Hartwell

Hardcover(30th ed.)

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Overview

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The definitive guide to the National Electric Code—thoroughly revised for 2020 rules and regulations

Updated to fully align with the 2020 NEC, this trusted on-the-job reference contains plain-language explanations, advice, and analysis for every provision. You will get discussions of the rationale behind specific rules that enhances your understanding of both meaning and application. This handbook features thousands of detailed diagrams and photos as well as in-depth discussions regarding controversial wording and actual errors, together with possible approaches to discussions with inspectors regarding how to cope with these issues. This book is not published by NFPA, and is therefore free to confront such topics head on.

Written by a senior member of the NEC Code Committee, McGraw Hill’s National Electrical Code (NEC) 2020 Handbook, 30th Edition is logically arranged and serves as a companion to the Code itself―the explanation for any topic lines up exactly with the applicable section in the Code. The book does not reproduce the Code, and therefore every column inch is devoted to explaining its provisions. You will get straightforward clarification of obtuse rules and vague language, enabling you to work efficiently and safely—and to achieve full compliance.

Covers all significant changes to the 2020 NEC, including:

  • Reconditioned equipment
  • Massive expansion of GFCI requirements
  • New receptacle coverage rules for kitchen islands and peninsulas
  • Total revision of non-dwelling lighting load calculations
  • Elimination of common enclosures for service disconnects
  • Exterior emergency disconnects
  • Rules for stair towers
  • New EGC fill calculations for boxes
  • Temperature limits for LFMC and LFNC
  • Latest developments for PV systems


Product Details

ISBN-13: 9781260474800
Publisher: McGraw-Hill Professional Publishing
Publication date: 05/05/2021
Edition description: 30th ed.
Pages: 1568
Sales rank: 239,042
Product dimensions: 7.60(w) x 9.20(h) x 2.40(d)

About the Author

Frederic P. Hartwell is a working electrician, President of Hartwell Electrical Services, Inc., and has been certified by the International Association of Electrical Inspectors as a Certified Master Electrical Inspector. He is the senior member of NEC CMP 9. Mr. Hartwell is coauthor of McGraw-Hill’s American Electricians’ Handbook, 15th, 16th, and 17th Editions.

Table of Contents

Preface ix

Intraduction to the National Electrical Code® xi

Brief History of the National Electrical Code® xiii

About the 2020 National Electrical Code® xv

90 Introduction 1

Chapter 1

100 Definitions 13

110 Requirements for Electrical Installations 49

Chapter 2

200 Use and Identification of Grounded Conductors 95

210 Branch Circuits 103

215 Feeders 172

220 Branch-Circuit, Feeder, and Service Load Calculations 191

225 Outside Branch Circuits and Feeders 225

230 Services 238

240 Overcurrent Protection 299

242 Overvoltage Protection 348

250 Grounding and Bonding 353

Chapter 3

300 General Requirements for Wiring Methods and Materials 491

310 Conductors for General Wiring 548

311 Medium-Voltage Conductors and Cable 572

312 Cabinets, Cutout Boxes, and Meter Socket Enclosures 580

314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures 587

320 Armored Cable: Type AC 627

322 Flat Cable Assemblies: Type FC 633

324 Flat Conductor Cable: Type FCC 635

326 Integrated Gas Spacer Cable: Type IGS 638

330 Metal-Clad Cable: Type MC 639

332 Mineral-Insulated, Metal-Sheathed Cable: Type MI 644

334 Nonmetallic-Sheathed Cable: Types NM and NMC 648

336 Power and Control Tray Cable: Type TC 657

337 Type P Cable 660

338 Service-Entrance Cable: Types SE and Use 661

340 Underground Feeder and Branch-Circuit Cable: Type UF 666

342 Intermediate Metal Conduit: Type IMC 670

344 Rigid Metal Conduit: Type RMC 673

348 Flexible Metal Conduit: Type FMC 682

350 Liquidtight Flexible Metal Conduit: Type LFMC 687

352 Rigid Polyvinyl Chloride Conduit: Type PVC 691

353 High-Density Polyethylene Conduit: Type HDPE Conduit 699

354 Nonmetallic Underground Conduit with Conductors: Type NUCC 700

355 Reinforced Thermosetting Resin Conduit: Type RTRC 701

356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC 702

358 Electrical Metallic Tubing: Type EMT 703

360 Flexible Metallic Tubing: Type FMT 708

362 Electrical Nonmetallic Tubing: Type ENT 710

366 Auxiliary Gutters 713

368 Busways 716

370 Cablebus 726

372 Cellular Concrete Floor Raceways 728

374 Cellular Metal Floor Raceways 730

376 Metal Wireways 733

378 Nonmetallic Wireways 737

380 Multioutlet Assembly 737

382 Nonmetallic Extensions 738

384 Strut-Type Channel Raceway 738

386 Surface Metal Raceways 739

388 Surface Nonmetallic Raceways 741

390 Underfloor Raceways 742

392 Cable Trays 744

393 Low-Voltage Suspended Ceiling Power Distribution Systems 758

394 Concealed Knob-and-Tube Wiring 760

396 Messenger-Supported Wiring 761

398 Open Wiring on Insulators 763

399 Outdoor Overhead Conductors over 1000 V 764

Chapter 4

400 Flexible Cords and Flexible Cables 767

402 Fixture Wires 774

404 Switches 775

406 Receptacles, Cord Connectors, and Attachment Plugs (Caps) 790

408 Switchboards, Switchgear, and Panelboards 806

409 Industrial Control Panels 828

410 Luminaires, Lampholders, and Lamps 829

411 Low-Voltage Lighting 861

422 Appliances 862

424 Fixed Electric Space-Heating Equipment 871

425 Fixed Resistance and Electrode Industrial Process Heating Equipment 889

426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment 889

427 Fixed Electric Heating Equipment for Pipelines and Vessels 893

430 Motors, Motor Circuits, and Controllers 894

440 Air-Conditioning and Refrigerating Equipment 972

445 Generators 992

450 Transformers and Transformer Vaults (Including Secondary Ties) 997

455 Phase Converters 1033

460 Capacitors 1035

470 Resistors and Reactors 1041

480 Storage Batteries 1041

490 Equipment Over 1000 V, Nominal 1045

Chapter 5

500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 1059

501 Class I Locations 1072

502 Class II Locations 1111

503 Class III Locations 1118

504 Intrinsically Safe Systems 1120

505 Zone 0, 1, and 2 Locations 1124

506 Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings 1130

510 Hazardous (Classified) Locations-Specific 1131

511 Commercial Garages: Repair and Storage 1131

513 Aircraft Hangars 1134

514 Motor Fuel Dispensing Facilities 1135

515 Bulk Storage Plants 1143

516 Spray Application, Dipping, Coating, and Printing Processes Using Flammable or Combustible Materials 1144

517 Health Care Facilities 1148

518 Assembly Occupancies 1170

520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations 1172

522 Control Systems for Permanent Amusement Attractions 1182

525 Carnivals, Circuses, Fairs, and Similar Events 1182

530 Motion Picture and Television Studios and Similar Locations 1184

540 Motion Picture Projection Rooms 1187

545 Manufactured Buildings and Relocatable Structures 1190

547 Agricultural Buildings 1191

550 Mobile Homes, Manufactured Homes, and Mobile Home Parks 1195

551 Recreational Vehicles and Recreational Vehicle Parks 1199

552 Park Trailers 1203

555 Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities 1203

590 Temporary Installations 1211

Chapter 6

600 Electric Signs and Outline Lighting 1225

604 Manufactured Wiring Systems 1234

605 Office Furnishings 1235

610 Cranes and Hoists 1237

620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chair Lifts 1239

625 Electrical Vehicle Power Transfer Systems 1243

626 Electrified Truck Parking Spaces 1248

630 Electric Welders 1250

640 Audio Signal Processing, Amplification, and Reproduction Equipment 1252

645 Information Technology Equipment 1257

646 Modular Data Centers 1265

647 Sensitive Electronic Equipment 1268

650 Pipe Organs 1271

660 X-Ray Equipment 1272

665 Induction and Dielectric Heating Equipment 1274

668 Electrolytic Cells 1276

669 Electroplating 1279

670 Industrial Machinery 1280

675 Electrically Driven or Controlled Irrigation Machines 1281

680 Swimming Pools, Fountains, and Similar Installations 1282

682 Natural and Artificially Made Bodies of Water 1319

685 Integrated Electrical Systems 1322

690 Solar Photovoltaic (PV) Systems 1323

691 Large-Scale Photovoltaic (PV) Electric Supply Stations 1341

692 Fuel Cell Systems 1343

694 Wind Electric Systems 1345

695 Fire Pumps 1349

Chapter 7

700 Emergency Systems 1361

701 Legally Required Standby Systems 1387

702 Optional Standby Systems 1389

705 Interconnected Electric Power Production Sources 1392

706 Energy Storage Systems 1403

708 Critical Operations Power Systems (COPS) 1406

710 Stand-Alone Systems 1410

712 Direct Current Microgrids 1412

720 Circuits and Equipment Operating at Less Than 50 V 1414

725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits 1415

727 Instrumentation Tray Cable: Type ITC 1435

728 Fire-Resistive Cable Systems 1436

750 Energy Management Systems 1438

760 Fire Alarm Systems 1438

770 Optical Fiber Cables and Raceways 1444

Chapter 8

800 General Requirements for Communications Systems 1455

805 Communications Circuits 1460

810 Radio and Television Equipment 1463

820 Community Antenna Television and Radio Distribution Systems 1467

830 Network-Powered Broadband Communications Systems 1470

840 Premises-Powered Broadband Communications Systems 1477

Chapter 9

Tables 1481

Informative Annex A Product Safety Standards 1484

Informative Annex B Application Information for Ampacity Calculation 1484

Informative Annex C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size 1488

Informative Annex D Examples 1488

Informative Annex E Types of Construction 1505

Informative Annex P Availability and Reliability for Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTS) for Critical Operations Power Systems 1505

Informative Annex G Supervisory Control and Data Acquisition (SCADA) 1505

Informative Annex H Administration and Enforcement 1505

Informative Annex I Recommended Tightening Torque Tables from UL Standard 486A-486B 1507

Informative Annex J ADA Standards for Accessible Design 1508

Index 1509

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