Pocket Guide to the National Electrical Code 2005, 8/e

Table of Contents:

List of Tables xi
Preface xv
Guide for the User xvii
90 Introduction xix

1: General 1

100 Definitions 1

110 Requirements for Electrical Installations 1

2: Wiring and Protection 5

200 Use and Identification of Grounded Conductors 5

210 Branch Circuits 7

215 Feeders 20

220 Branch-Circuit, Feeder, and Service Calculations 22

225 Outside Branch Circuits and Feeders 38

230 Services 44

240 Overcurrent Protection 52

250 Grounding and Bonding 59

280 Surge Arresters 79

285 Transient Voltage Surge Supressors (TVSSs) 79

3: Wiring Methods and Materials 81

300 Wiring Methods 81

310 Conductors for General Wiring 88

312 Cabinets, Cutout Boxes, and Meter Socket Enclosures 112

314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures 113

320 Armored Cable: Type AC 120

322 Flat Cable Assemblies: Type FC 122

324 Flat Conductor Cable: Type FCC 122

326 Integrated Gas Spacer Cable: Type IGS 123

328 Medium-Voltage Cable: Type MV 124

330 Metal-Clad Cable: Type MC 125

332 Mineral-Insulated, Metal-Sheathed Cable: Type MI 127

334 Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS 128

336 Power and Control Tray Cable: Type TC 130

338 Service-Entrance Cable: Types SE and USE 131

340 Underground Feeder and Branch-Circuit Cable: Type UF 132

342 Intermediate Metal Conduit: Type IMC 134

344 Rigid Metal Conduit: Type RMC 136

348 Flexible Metal Conduit: Type FMC 139

350 Liquidtight Flexible Metal Conduit: Type LFMC 141

352 Rigid Nonmetallic Conduit: Type RNC 142

353 High Density Polyethylene Conduit: Type HDPE Conduit 147

354 Nonmetallic Underground Conduit with Conductors: Type NUCC 149

356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC 150

358 Electrical Metallic Tubing: Type EMT 152

360 Flexible Metallic Tubing: Type FMT 154

362 Electrical Nonmetallic Tubing: Type ENT 155

366 Auxiliary Gutters 156

368 Busways 157

370 Cablebus 157

372 Cellular Concrete Floor Raceways 157

374 Cellular Metal Floor Raceways 158

376 Metal Wireways 158

378 Nonmetallic Wireways 158

380 Multioutlet Assembly 158

382 Nonmetallic Extensions 159

384 Strut-Type Channel Raceway 159

386 Surface Metal Raceways 160

388 Surface Nonmetallic Raceways 161

390 Underfloor Raceways 162

392 Cable Trays 163

394 Concealed Knob-and-Tube Wiring 167

396 Messenger Supported Wiring 168

398 Open Wiring on Insulators 169

4: Equipment for General Use 171

400 Flexible Cords and Cables 171

402 Fixture Wires 174

404 Switches 174

406 Receptacles, Cord Connectors, and Attachment Plugs (Caps) 177

408 Switchboards and Panelboards 179

409 Industrial Control Panels 183

410 Luminaires (Lighting Fixtures), Lampholders, and Lamps 184

411 Lighting Systems Operating at 30 Volts or Less 190

422 Appliances 190

424 Fixed Electric Space Heating Equipment 195

426 Fixed Outdoor Electric De-Icing and Snow-Melting Equipment 201

427 Fixed Electric Heating Equipment for Pipelines and Vessels 203

430 Motors, Motor Circuits, and Controllers 205

440 Air Conditioning and Refrigerating Equipment 219

445 Generators 223

450 Transformers and Transformer Vaults (Including Secondary Ties) 223

455 Phase Converters 223

460 Capacitors 223

470 Resistors and Reactors 223

480 Storage Batteries 223

490 Equipment, over 600 Volts, Nominal 223

5: Special Occupancies 225

500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 225

501 Class I Locations 227

502 Class II Locations 234

503 Class III Locations 239

504 Intrinsically Safe Systems 241

505 Class I, Zone 0, 1, and 2 Locations 241

506 Zone 20, 21, and 22 Locations for Flammable Dusts, Fibers, and Flyings 242

510 Hazardous (Classified) Locations--Specific 243

511 Commercial Garages, Repair and Storage 243

513 Aircraft Hangars 243

514 Motor Fuel Dispensing Facilities 243

515 Bulk Storage Plants 243

516 Spray Application, Dipping, and Coating Processes 243

517 Health Care Facilities 243

518 Assembly Occupancies 251

520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations 251

525 Carnivals, Circuses, Fairs, and Similar Events 251

530 Motion Picture and Television Studios and Similar Locations 251

540 Motion Picture Projection Rooms 251

545 Manufactured Buildings 251

547 Agricultural Buildings 251

550 Mobile Homes, Manufactured Homes, and Mobile Home Parks 251

551 Recreational Vehicles and Recreational Vehicle Parks 251

552 Park Trailers 251

553 Floating Buildings 251

555 Marinas and Boatyards 251

590 Temporary Installations 251

6 Special Equipment 253

600 Electric Signs and Outline Lighting 253

604 Manufactured Wiring Systems 253

605 Office Furnishings (Consisting of Lighting Accessories and Wired Partitions) 253

610 Cranes and Hoists 253

620 Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Lifts 253

625 Electric Vehicle Charging System 253

630 Electric Welders 253

640 Audio Signal Processing, Amplification, and Reproduction Equipment 253

645 Information Technology Equipment 253

647 Sensitive Electronic Equipment 256

650 Pipe Organs 256

660 X-Ray Equipment 256

665 Induction and Dielectric Heating Equipment 256

668 Electrolytic Cells 256

669 Electroplating 256

670 Industrial Machinery 256

675 Electrically Driven or Controlled Irrigation Machines 256

680 Swimming Pools, Fountains, and Similar Installations 256

682 Natural and Artificially Made Bodies of Water 256

685 Integrated Electrical Systems 256

690 Solar Photovoltaic Systems 256

692 Fuel Cell Systems 256

695 Fire Pumps 256

7: Special Conditions 256

700 Emergency Systems 256

701 Legally Required Standby Systems 259

702 Optional Standby Systems 262

705 Interconnected Electric Power Production Sources 263

720 Circuits and Equipment Operating at Less Than 50 Volts 264

725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits 264

727 Instrumentation Tray Cable, Type ITC 264

760 Fire Alarm Systems 264

770 Optical Fiber Cables and Raceways 264

780 Closed-Loop and Programmed Power Distribution 264

8: Communications Systems 264

800 Communications Circuits 264

810 Radio and Television Equipment 264

820 Community Antenna Television and Radio Distribution Systems 264

830 Network-Powered Broadband Communications Systems 264

9: Tables 265

Annex A Product Safety Standards 301

Annex B Application Information for Ampacity Calculation 301

Annex C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size 303

Annex D Examples 399

Annex E Types of Construction 429

Annex F Cross Reference Tables 435

Annex G Administration and Enforcement 435