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National Electrical Code 1999,9780877654322
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National Electrical Code 1999

by
Edition:
1st
ISBN13:

9780877654322

ISBN10:
0877654328
Format:
Paperback
Pub. Date:
9/10/1998
Publisher(s):
Cengage Learning
List Price: $83.86
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Summary

This is the standard reference for anyone involved in the electrical industry. Revised every three years, it is adopted as law by most states, cities, and municipalities. It contains the up-to-the minute facts and safety guidelines electricians need to avoid costly errors. It remains a "must-have" reference for anyone involved in electrical design installation, identification, and/or inspection.

Table of Contents

Introductionp. 17
General
Definitionsp. 19
Generalp. 19
Over 600 Volts, Nominalp. 25
Requirements for Electrical Installationsp. 26
Generalp. 26
600 Volts, Nominal, or Lessp. 28
Over 600 Volts, Nominalp. 30
Tunnel Installations Over 600 Volts, Nominalp. 32
Wiring and Protection
Use and Identification of Grounded Conductorsp. 35
Branch Circuitsp. 37
General Provisionsp. 37
Branch-Circuit Ratingsp. 41
Required Outletsp. 43
Feedersp. 46
Branch-Circuit, Feeder, and Service Calculationsp. 48
Generalp. 48
Feeders and Servicesp. 48
Optional Calculations for Computing Feeder and Service Loadsp. 52
Method for Computing Farm Loadsp. 55
Outside Branch Circuits and Feedersp. 55
Generalp. 56
More than One Building or Other Structurep. 58
Over 600 Voltsp. 60
Servicesp. 61
Generalp. 61
Overhead Service-Drop Conductorsp. 62
Underground Service-Lateral Conductorsp. 63
Service-Entrance Conductorsp. 64
Service Equipment -- Generalp. 66
Service Equipment -- Disconnecting Meansp. 66
Service Equipment -- Overcurrent Protectionp. 68
Services Exceeding 600 Volts, Nominalp. 69
Overcurrent Protectionp. 70
Generalp. 70
Locationp. 73
Enclosuresp. 76
Disconnecting and Guardingp. 76
Plug Fuses, Fuseholders, and Adaptersp. 77
Cartridge Fuses and Fuseholdersp. 77
Circuit Breakersp. 78
Supervised Industrial Installationsp. 78
Overcurrent Protection Over 600 Volts, Nominalp. 80
Groundingp. 80
Generalp. 80
Circuit and System Groundingp. 83
Grounding Electrode System and Grounding electrode Conductorp. 88
Enclosure, Raceway, and Service Cable Groundingp. 91
Bondingp. 92
Equipment Grounding and Equipment Grounding Conductorsp. 94
Methods of Equipment Groundingp. 98
Direct-Current Systemsp. 100
Instruments, Meters, and Relaysp. 101
Grounding of Systems and Circuits of 1 kV and Over (High Voltage)p. 102
Surge Arrestersp. 103
Generalp. 103
Installationp. 104
Connecting Surge Arrestersp. 104
Wiring Methods and Materials
Wiring Methodsp. 105
General Requirementsp. 105
Requirements for Over 600 Volts, Nominalp. 113
Temporary Wiringp. 115
Conductors for General Wiringp. 116
Cable Traysp. 140
Open Wiring on Insulatorsp. 146
Messenger Supported Wiringp. 147
Concealed Knob-and-Tube Wiringp. 148
Integrated Gas Spacer Cablep. 149
Generalp. 149
Installationp. 150
Construction Specificationsp. 150
Medium Voltage Cablep. 150
Flat Conductor Cablep. 151
Generalp. 151
Installationp. 151
Constructionp. 152
Mineral-Insulated, Metal-Sheathed Cablep. 153
Generalp. 153
Installationp. 153
Construction Specificationsp. 154
Electrical Nonmetallic Tubingp. 154
Generalp. 154
Installationp. 155
Construction Specificationsp. 155
Armored Cablep. 155
Generalp. 155
Installationp. 156
Construction Specificationsp. 157
Metal-Clad Cablep. 157
Generalp. 157
Installationp. 157
Construction Specificationsp. 158
Nonmetallic-Sheathed Cablep. 159
Generalp. 159
Installationp. 159
Construction Specificationsp. 160
Service-Entrance Cablep. 161
Underground Feeder and Branch-Circuit Cablep. 162
Power and Control Tray Cablep. 162
Nonmetallic Extensionsp. 163
Nonmetallic Underground Conduit with Connectorsp. 164
Generalp. 164
Installationp. 165
Constructionp. 165
Intermediate Metal Conduitp. 166
Generalp. 166
Installationp. 166
Construction Specificationsp. 167
Rigid Metal Conduitp. 167
Generalp. 167
Installationp. 168
Construction Specificationsp. 169
Rigid Nonmetallic Conduitp. 169
Installationsp. 170
Construction Specificationsp. 172
Electrical Metallic Tubingp. 172
Generalp. 172
Installationp. 173
Construction Specificationsp. 174
Flexible Metallic Tubingp. 174
Generalp. 174
Construction and Installationp. 174
Flexible Metal Conduitp. 175
Generalp. 175
Installationp. 175
Liquidtight Flexible Metal Conduit and Liquidtight Flexible Nonmentallic Conduitp. 176
Liquidtight Flexible Metal Conduitp. 176
Liquidtight Flexible Nonmetallic Conduitp. 177
Surface Metal Raceways and Surface Nonmetallic Racewaysp. 178
Surface Metal Racewaysp. 178
Surface Nometallic Racewaysp. 179
Strut-Type Channel Racewayp. 180
Multioutlet Assemblyp. 181
Underfloor Racewaysp. 181
Cellular Metal Floor Racewaysp. 183
Installationp. 183
Construction Specificationsp. 183
Cellular Concrete Floor Racewaysp. 184
Metal Wireways and Nonmetallic Wirewaysp. 184
Metal Wirewaysp. 184
Nonmetallic Wirewaysp. 186
Flat Cable Assembliesp. 187
Buswaysp. 188
General Requirementsp. 188
Requirements for Over 600 Volts, Nominalp. 189
Cablebusp. 190
Outlet, Device, Pull and Junction Boxes, Conduit Bodies and Fittingsp. 191
Scope and Generalp. 191
Installationp. 192
Construction Specificationsp. 197
Manholes and Other Electric Enclosures Intended for Personnel Entryp. 197
Pull and Junction Boxes for Use on Systems Over 600 Volts, Nominalp. 199
Cabinets, Cutout Boxes, and Meter Socket Enclosuresp. 199
Installationp. 199
Construction Specificationsp. 201
Auxiliary Guttersp. 202
Switchesp. 204
Installationp. 204
Construction Specificationsp. 207
Switchboards and Panelboardsp. 207
Generalp. 207
Switchboardsp. 208
Panelboardsp. 208
Construction Specificationsp. 210
Equipment for General Use
Flexible Cords and Cablesp. 211
Generalp. 211
Construction Specificationsp. 220
Portable Cables Over 600 Volts, Nominalp. 221
Fixture Wiresp. 221
Lighting Fixtures, Lampholders, Lamps, and Receptaclesp. 225
Generalp. 225
Fixture Locationsp. 225
Provisions at Fixture Outlet Boxes, Canopies, and Pansp. 226
Fixture Supportsp. 227
Groundingp. 227
Wiring of Fixturesp. 228
Construction of Fixturesp. 229
Installation of Lampholdersp. 230
Construction of Lampholdersp. 230
Lamps and Auxiliary Equipmentp. 231
Receptacles, Cord Connectors, and Attachment Plugs (Caps)p. 231
Special Provisions for Flush and Recessed Fixturesp. 232
Construction of Flush and Recessed Fixturesp. 233
Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Lessp. 233
Special Provisions for Electric-Discharge Lighting Systems of More Than 100 Voltsp. 234
Lighting Trackp. 235
Lighting Systems Operating at 30 Volts or Lessp. 236
Appliancesp. 236
Generalp. 236
Installationp. 236
Disconnecting Meansp. 239
Constructionp. 240
Markingp. 241
Fixed Electric Space-Heating Equipmentp. 241
Generalp. 241
Installationp. 242
Control and Protection of Fixed Electric Space-Heating Equipmentp. 242
Marking of Heating Equipmentp. 244
Electric Space-Heating Cablesp. 244
Duct Heatersp. 246
Resistance-Type Boilersp. 246
Electrode-Type Boilersp. 247
Electric Radiant Heating Panels and Heating Panel Setsp. 248
Fixed Outdoor Electric Deicing and Snow-Melting Equipmentp. 250
Generalp. 250
Installationp. 251
Resistance Heating Elementsp. 251
Impedance Heatingp. 252
Skin-Effect Heatingp. 252
Control and Protectionp. 253
Fixed Electric Heating Equipment for Pipelines and Vesselsp. 253
Generalp. 253
Installationp. 254
Resistance Rating Elementsp. 254
Induction Heatingp. 255
Skin-Effect Heatingp. 255
Control and Protectionp. 256
Motors, Motor Circuits, and Controllersp. 256
Generalp. 256
Motor Circuit Conductorsp. 262
Motor and Branch-Circuit Overload Protectionp. 264
Motor Branch-Circuit Short-Circuit and Ground-Fault Protectionp. 267
Motor Feeder Short-Circuit and Ground-Fault Protectionp. 270
Motor Control Circuitsp. 270
Motor Controllersp. 272
Motor Control Centersp. 273
Disconnecting Meansp. 275
Over 600 Volts, Nominalp. 278
Protection of Live Parts -- All Voltagesp. 278
Grounding -- All Voltagesp. 279
Tablesp. 280
Air-Conditioning and Refrigeration Equipmentp. 283
Generalp. 283
Disconnecting Meansp. 285
Branch-Circuit Short-Circuit and Ground-Fault Protectionp. 286
Branch-Circuit Conductorsp. 287
Controllers for Motor-Compressorsp. 287
Motor-Compressor and Branch-Circuit Overload Protectionp. 288
Provisions for Room Air Conditionersp. 289
Generatorsp. 289
Transformers and Transformer Vaults (Including Secondary Ties)p. 290
General Provisionsp. 291
Specific Provisions Applicable to Different Types of Transformersp. 295
Transformer Vaultsp. 296
Phase Convertersp. 297
Generalp. 297
Specific Provisions Applicable to Different Types of Transformersp. 299
Capacitorsp. 299
600 Volts, Nominal, and Underp. 299
Over 600 Volts, Nominalp. 300
Resistors and Reactorsp. 301
600 Volts, Nominal, and Underp. 301
Over 600 Volts, Nominalp. 301
Storage Batteriesp. 301
Equipment, Over 600 Volts, Nominalp. 303
Generalp. 303
Equipment -- Specific Provisionsp. 303
Equipment -- Metal-Enclosed Power Switchgear and Industrial Control Assembliesp. 305
Mobile and Portable Equipmentp. 307
Electrode-Type Boilersp. 308
Special Occupancies
Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2p. 309
Class I Locationsp. 315
Class II Locationsp. 324
Class III Locationsp. 330
Intrinsically Safe Systemsp. 333
Class I, Zone 0, 1, and 2 Locationsp. 335
Hazardous (Classified) Locations -- Specificp. 342
Commercial Garages, Repair and Storagep. 343
Aircraft Hangarsp. 344
Gasoline Dispensing and Service Stationsp. 346
Bulk Storage Plantsp. 350
Spray Application, Dipping, and Coating Processesp. 353
Health Care Facilitiesp. 359
Generalp. 359
Wiring and Protectionp. 361
Essential Electrical Systemp. 364
Inhaiation Anesthetizing Locationsp. 372
X-Ray Installationsp. 375
Communications, Signaling Systems, Data Systems, Fire Alarm Systems, and Systems Less than 120 Volts, Nominalp. 376
Isolated Power Systemsp. 377
Places of Assemblyp. 378
Theaters, Audience Areas of Motion Picture and Television Studios, and Similar Locationsp. 379
Generalp. 379
Fixed Stage Switchboardsp. 380
Fixed Stage Equipment Other than Switchboardsp. 381
Portable Switchboards on Stagep. 383
Portable Stage Equipment Other than Switchboardsp. 386
Dressing Roomsp. 387
Groundingp. 387
Carnivals, Circuses, Fairs, and Similar Eventsp. 387
General Requirementsp. 387
Installationp. 388
Grounding and Bondingp. 389
Disconnecting Meansp. 389
Attractions Utilizing Pools, Fountains, and Similar Installations with Contained Volumes of Waterp. 389
Motion Picture and Television Studios and Similar Locationsp. 389
Generalp. 389
Stage or Setp. 390
Dressing Roomsp. 393
Viewing, Cutting, and Patching Tablesp. 393
Cellulose Nitrate Film Storage Vaultsp. 393
Substationsp. 393
Separately Derived Systems with 60 Volts to Groundp. 393
Motion Picture Projectorsp. 394
Generalp. 394
Definitionsp. 394
Equipment and Projectors of the Professional Typep. 394
Nonprofessional Projectorsp. 395
Audio Signal Processing, Amplification, and Reproduction Equipmentp. 395
Manufactured Buildingp. 395
Generalp. 395
Agricultural Buildingsp. 396
Mobile Homes, Manufactured Homes, and Mobile Home Parksp. 398
Generalp. 398
Mobile Homesp. 399
Services and Feedersp. 406
Recreational Vehicles and Recreational Vehicle Parksp. 407
Generalp. 407
Low-Voltage Systemsp. 408
Combination Electrical Systemsp. 410
Other Power Sourcesp. 410
Norminal 120-Volt or 120/240-Volt Systemsp. 411
Factory Testsp. 418
Recreational Vehicle Parksp. 418
Park Trailersp. 420
Generalp. 420
Low-Voltage Systemsp. 421
Combination Electrical Systemsp. 422
Nominal 120-Volt or 120/240-Volt Systemsp. 423
Factory Testsp. 429
Floating Buildingsp. 430
Generalp. 430
Services and Feedersp. 430
Groundingp. 430
Marinas and Boatyardsp. 431
Special Equipment
Electric Signs and Outline Lightingp. 433
Generalp. 433
Field-Installed Skeleton Tubingp. 435
Manufactured Wiring Systemsp. 437
Office Furnishings (Consisting of Lighting Accessories and Wired Partitions)p. 437
Cranes and Hoistsp. 438
Generalp. 438
Wiringp. 439
Contact Conductorsp. 441
Disconnecting Meansp. 442
Overcurrent Protectionp. 442
Controlp. 443
Groundingp. 443
Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Liftsp. 444
Generalp. 444
Conductorsp. 445
Wiringp. 446
Installation of Conductorsp. 448
Traveling Cablesp. 449
Disconnecting Means and Controlp. 450
Overcurrent Protectionp. 451
Machine Roomp. 451
Groundingp. 452
Emergency and Standby Power Systemsp. 452
Electric Vehicle Charging System Equipmentp. 452
Generalp. 452
Wiring Methodsp. 453
Equipment Constructionp. 453
Control and Protectionp. 454
Electric Vehicle Supply Equipment Locationsp. 454
Electric Weldersp. 455
Generalp. 455
Are Weldersp. 455
Resistance Weldersp. 456
Welding Cablep. 457
Audio Signal Processing Araplification, and Reproduction Equipmentp. 458
Generalp. 458
Permanent Audio System Installationsp. 461
Portable and Temporary Audio System Installationsp. 462
Information Technology Equipmentp. 463
Pipe Organsp. 464
X-Ray Equipmentp. 465
Generalp. 465
Controlp. 466
Transformers and Capacitorsp. 467
Guarding and Groundingp. 467
Induction and Dielectric Heating Equipmentp. 467
Generalp. 467
Guarding, Grounding, and Labelingp. 467
Motor-Generator Equipmentp. 468
Equipment Other than Motor-Generatorsp. 469
Electrolytic Cellsp. 469
Electroplatingp. 472
Industrial Machineryp. 473
Electrically Driven or Controlled Irrigation Machinesp. 474
Generalp. 474
Center Pivot Irrigation Machinesp. 476
Swimming Pools, Fountains, and Similar Installationsp. 476
Generalp. 476
Permanently Installed Poolsp. 480
Storable Poolsp. 484
Spas and Hot Tubsp. 485
Fountainsp. 486
Pools and Tubs for Therapeutic Usep. 487
Hydromassage Bathtubsp. 488
Integrated Electrical Systemsp. 489
Generalp. 489
Orderly Shutdownp. 489
Solar Photovoltaic Systemsp. 489
Generalp. 489
Circuit Requirementsp. 492
Disconnecting Meansp. 493
Wiring Methodsp. 494
Groundingp. 495
Markingp. 495
Connection to Other Sourcesp. 496
Storage Batteriesp. 496
Systems Over 600 Voltsp. 497
Fire Pumpsp. 497
Special Conditions
Emergency Systemsp. 501
Generalp. 501
Circuit Wiringp. 502
Sources of Powerp. 503
Emergency System Circuits for Lighting and Powerp. 504
Control -- Emergency Lighting Circuitsp. 504
Overcurrent Protectionp. 505
Legally Required Standby Systemsp. 505
Generalp. 505
Circuit Wiringp. 506
Sources of Powerp. 506
Overcurrent Protectionp. 507
Optional Standby Systemsp. 507
Generalp. 507
Circuit Wiringp. 508
Interconnected Electrical Power Production Sourcesp. 508
Circuits and Equipment Operating at Less than 50 Voltsp. 510
Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuitsp. 510
Generalp. 510
Class 1 Circuitsp. 511
Class 2 and Class 3 Circuitsp. 513
Instrumentation Tray Cable: Type ITCp. 518
Fire Alarm Systemsp. 519
Generalp. 519
Nonpower-Limited Fire Alarm (NPLFA) Circuitsp. 520
Power-Limited Fire Alarm (PLFA) Circuitsp. 523
Optical Fiber Cables and Racewaysp. 527
Generalp. 527
Protectionp. 528
Cables Within Buildingsp. 528
Closed-Loop and Programmed Power Distributionp. 531
Communications Systems
Communications Circuitsp. 533
Generalp. 533
Conductors Outside and Entering Buildingsp. 533
Protectionp. 535
Grounding Methodsp. 536
Communications Wires and Cables Within Buildingsp. 537
Radio and Television Equipmentp. 541
Generalp. 541
Receiving Equipment -- Antenna Systemsp. 542
Amateur Transmitting and Receiving Stations -- Antenna Systemsp. 544
Interior Installation -- Transmitting Stationsp. 544
Community Antenna Television and Radio Distribution Systemsp. 545
Generalp. 545
Cables Outside and Entering Buildingsp. 545
Protectionp. 546
Grounding Methodsp. 547
Cables Within Buildingsp. 548
Network-Powered Broadband Communications Systemsp. 550
Generalp. 550
Cables Outside and Entering Buildingsp. 552
Protectionp. 554
Grounding Methodsp. 556
Network-Powered Broadband Communications Systems Wiring Methods Within Buildingsp. 557
Tables
Percent of Cross Section of Conduit and Tubing for Conductorsp. 561
Dimensions and Percent Area of Conduit and Tubingp. 562
Dimensions of Insulated Conductors and Fixture Wiresp. 564
Compact Aluminum Building Wire Nominal Dimensions and Areasp. 566
Conductor Propertiesp. 567
Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75[ch]C (167[ch]F) -- Three Single Conductors in Conduitp. 568
Class 2 and Class 3 Alternating-Current Power Source Limitationsp. 569
Class 2 and Class 3 Direct-Current Power Source Limitationsp. 569
PLFA Alternating-Current Power Source Limitationsp. 570
PLFA Direct-Current Power Source Limitationsp. 570
Appendix Ap. 571
Appendix Bp. 575
Appendix Cp. 585
Appendix Dp. 609
Appendix Ep. 617
Indexp. 619
Table of Contents provided by Syndetics. All Rights Reserved.


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