Safe, efficient, code-compliant electrical installations are made simple with the latest publication of this widely popular resource. Like its highly successful previous editions, the NEC 2011 Handbook combines solid, thorough, research-based content with the tools you need to build an in-depth understanding of the most important topics. It provides the full text of the updated code regulations alongside expert commentary from code specialists, offering code rationale, clarifications for new and updated rules, and practical, real-world advice on how to apply the code. New to the 2011 edition are articles including first-time Article 399 on October, Overhead Conductors with over 600 volts, first-time Article 694 on Small Wind Electric Systems, first-time Article 840 on Premises Powered Broadband Communications Systems, and more. This winning combination has created a valuable reference for those in or entering careers in electrical design, installation, inspection, and safety. Check out our app, DEWALT Mobile ProTM. This free app is a construction calculator with integrated reference materials and access to hundreds of additional calculations as add-ons. To learn more, visit dewalt.com/mobilepro.

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The National electrical code handbook

(NFPA) National Fire Protection Association

National Fire Protection Association (NFPA)

NFPA (distributed by Delmar, Cengage Learning)

International electrical code series, 12th ed, Quincy, Mass, c2011

12th ed., Quincy, MA, Massachusetts, 2010

United States, United States of America

usenet tech -- 2012-06

lg908298

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Important Notices and Disclaimers......Page 2
Additional Notices And Disclaimers ......Page 3
Contents ......Page 5
90 Introduction......Page 25
100 Definitions ......Page 29
110 Requirements for Electrical Installations ......Page 37
200 Use and Identification of Grounded Conductors......Page 49
210 Branch Circuits......Page 51
215 Feeders......Page 62
220 Branch-Circuit, Feeder, and Service Calculations......Page 64
225 Outside Branch Circuits and Feeders......Page 74
230 Services......Page 81
240 Overcurrent Protection......Page 91
250 Grounding and Bonding......Page 103
Table 250.66 Grounding Electrode Conductor for Alternating-Current Systems......Page 118
Table 250.122 Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment......Page 128
280 Surge Arresters, Over 1 kV......Page 134
285 Surge-Protective Devices (SPDs),1 kV or Less......Page 136
300 Wiring Methods......Page 138
310 Conductors for General Wiring......Page 150
Table 310.15(B)(3)(a) Adjustment Factors for More Than Three Current-Carrying Conductors in a Raceway or Cable......Page 155
Table 310.15(B)(16 ) Allowable Ampacities of Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth......Page 157
312 Cabinets, Cutout Boxes, and Meter Socket Enclosures......Page 176
314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures ......Page 180
Table 314.16 Box Fill ......Page 182
320 Armored Cable: Type AC......Page 189
322 Flat Cable Assemblies: Type FC......Page 190
324 Flat Conductor Cable: Type FCC......Page 192
326 Integrated Gas Spacer Cable: Type IGS......Page 194
330 Metal-Clad Cable: Type MC......Page 195
332 Mineral-Insulated, Metal-Sheathed Cable: Type MI......Page 197
334 Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS......Page 199
336 Power and Control Tray Cable: Type TC......Page 201
338 Service-Entrance Cable: Types SE and USE......Page 203
340 Underground Feeder and Branch-Circuit Cable: Type UF......Page 204
342 Intermediate Metal Conduit: Type IMC......Page 205
344 Rigid Metal Conduit: Type RMC......Page 206
348 Flexible Metal Conduit: Type FMC......Page 208
350 Liquidtight Flexible Metal Conduit: Type LFMC......Page 210
352 Rigid Polyvinyl Chloride Conduit: Type PVC......Page 211
353 High Density Polyethylene Conduit:Type HDPE Conduit......Page 214
354 Nonmetallic Underground Conduit with Conductors: Type NUCC......Page 215
355 Reinforced Thermosetting Resin Conduit: Type RTRC......Page 216
356 Liquidtight Flexible NonmetallicConduit: Type LFNC......Page 219
358 Electrical Metallic Tubing: Type EMT......Page 221
360 Flexible Metallic Tubing: Type FMT......Page 222
362 Electrical Nonmetallic Tubing:Type ENT......Page 223
366 Auxiliary Gutters......Page 225
368 Busways......Page 227
370 Cablebus......Page 230
372 Cellular Concrete Floor Raceways......Page 231
374 Cellular Metal Floor Raceways......Page 232
376 Metal Wireways......Page 233
378 Nonmetallic Wireways......Page 234
380 Multioutlet Assembly......Page 235
382 Nonmetallic Extensions......Page 236
384 Strut-Type Channel Raceway......Page 238
386 Surface Metal Raceways......Page 239
388 Surface Nonmetallic Raceways......Page 240
390 Underfloor Raceways......Page 241
392 Cable Trays......Page 242
394 Concealed Knob-and-Tube Wiring......Page 249
396 Messenger-Supported Wiring......Page 250
398 Open Wiring on Insulators......Page 251
399 Outdoor Overhead Conductors over 600Volts......Page 253
400 Flexible Cords and Cables......Page 254
402 Fixture Wires......Page 265
404 Switches ......Page 269
406 Receptacles, Cord Connectors, and Attachment Plugs (Caps)......Page 273
408 Switchboards and Panelboards......Page 277
409 Industrial Control Panels......Page 281
410 Luminaires, Lampholders, and Lamps......Page 283
411 Lighting Systems Operating at 30 Volts or Less......Page 292
422 Appliances......Page 293
424 Fixed Electric Space-Heating Equipment......Page 298
426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment ......Page 307
427 Fixed Electric Heating Equipment for Pipelines and Vessels......Page 310
430 Motors, Motor Circuits, and Controllers......Page 313
Table 430.248 Full-Load Currents in Amperes, Single-Phase Alternating-Current Motors......Page 340
440 Air-Conditioning and Refrigerating Equipment......Page 343
450 Transformers and Transformer Vaults (Including Secondary Ties)......Page 351
455 Phase Converters......Page 358
460 Capacitors......Page 360
470 Resistors and Reactors......Page 361
480 Storage Batteries......Page 362
490 Equipment, Over 600 Volts, Nominal......Page 363
500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2......Page 370
501 Class I Locations......Page 379
502 Class II Locations......Page 389
503 Class III Locations......Page 394
504 Intrinsically Safe Systems......Page 397
505 Zone 0, 1, and 2 Locations......Page 400
506 Zone 20, 21, and 22 Locations for Combustible Dusts or Ignitible Fibers/Flyings......Page 415
511 Commercial Garages, Repair and Storage......Page 422
513 Aircraft Hangars......Page 425
514 Motor Fuel Dispensing Facilities......Page 428
515 Bulk Storage Plants......Page 432
516 Spray Application, Dipping, and Coating Processes......Page 437
517 Health Care Facilities......Page 443
518 Assembly Occupancies......Page 461
520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations......Page 462
522 Control Systems for Permanent Amusement Attractions......Page 471
525 Carnivals, Circuses, Fairs, and Similar Events......Page 473
530 Motion Picture and Television Studios and Similar Locations......Page 475
540 Motion Picture Projection Rooms......Page 479
545 Manufactured Buildings......Page 480
547 Agricultural Buildings......Page 481
550 Mobile Homes, Manufactured Homes, and Mobile Home Parks......Page 484
551 Recreational Vehicles and Recreational Vehicle Parks......Page 493
552 Park Trailers......Page 506
553 Floating Buildings......Page 515
555 Marinas and Boatyards......Page 516
590 Temporary Installations......Page 519
600 Electric Signs and Outline Lighting......Page 522
604 Manufactured Wiring Systems......Page 528
605 Office Furnishings (Consisting of Lighting Accessories and Wired Partitions)......Page 529
610 Cranes and Hoists......Page 530
620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts......Page 535
625 Electric Vehicle Charging System......Page 546
626 Electrified Truck Parking Spaces......Page 550
630 Electric Welders......Page 555
640 Audio Signal Processing, Amplification, and Reproduction Equipment......Page 557
645 Information Technology Equipment......Page 562
647 Sensitive Electronic Equipment......Page 566
650 Pipe Organs......Page 567
660 X-Ray Equipment......Page 568
665 Induction and Dielectric Heating Equipment......Page 570
668 Electrolytic Cells......Page 571
669 Electroplating......Page 574
670 Industrial Machinery......Page 575
675 Electrically Driven or Controlled Irrigation Machines......Page 576
680 Swimming Pools, Fountains, and Similar Installations......Page 578
682 Natural and Artificially Made Bodies of Water......Page 593
685 Integrated Electrical Systems......Page 595
690 Solar Photovoltaic (PV) Systems......Page 596
692 Fuel Cell Systems......Page 610
694 Small Wind Electric Systems......Page 613
695 Fire Pumps......Page 619
700 Emergency Systems......Page 625
701 Legally Required Standby Systems......Page 630
702 Optional Standby Systems......Page 633
705 Interconnected Electric Power Production Sources......Page 634
708 Critical Operations Power Systems (COPS)......Page 638
720 Circuits and Equipment Operating at Less Than 50 Volts......Page 643
725 Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits......Page 644
727 Instrumentation Tray Cable: Type ITC......Page 653
760 Fire Alarm Systems......Page 654
770 Optical Fiber Cables and Raceways......Page 663
800 Communications Circuits......Page 672
810 Radio and Television Equipment......Page 685
820 Community Antenna Television and Radio Distribution Systems......Page 689
830 Network-Powered Broadband Communications Systems......Page 698
840 Premises-Powered Broadband Communications Systems......Page 710
Table 2 Radius of Conduit and Tubing Bends ......Page 714
Table 4 Dimensions and Percent Area of Conduit and Tubing ......Page 715
Table 5 Dimensions of Insulated Conductors and Fixture Wires ......Page 719
Table 8 Conductor Properties ......Page 724
Table 9 Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F) — Three Single Conductors in Conduit ......Page 725
Table 10 Conductor Stranding......Page 726
Table 11(A) Class 2 and Class 3 Alternating-Current Power Source Limitations ......Page 727
Tables 12(A) and 12(B) PLFA Power Source Limitations......Page 729
Informative Annex A Product Safety Standards ......Page 730
Informative Annex B Application Information for Ampacity Calculation ......Page 733
Informative Annex C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size......Page 747
Informative Annex D Examples ......Page 807
Informative Annex E Types of Construction ......Page 817
Informative Annex F Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems ......Page 819
Informative Annex G Supervisory Control and Data Acquisition (SCADA) ......Page 822
Informative Annex H Administration and Enforcement ......Page 824
Informative Annex I Recommended Tightening Torque Tables from UL Standard 486A-B ......Page 831
Index ......Page 833
Formal Interpretations ......Page 874
FORM FOR PROPOSAL FOR 2014 NATIONAL ELECTRICAL CODE® ......Page 878

2013-03-30