استاندارد NFPA 70

استاندارد NFPA 70

چکیده :

NFPA 70
National Electrical Code® NEC
2011 Edition


فهرست عناوین بخش های مختلف استاندارد NEC ویرایش 2011 در زیر آمده است. جهت دانلود کامل استاندارد به انتهای فهرست مراجعه نمایید.

ARTICLE

90 Introduction ........................................ 70– 22

Chapter 1 General

100 Definitions ......................................... 70– 26

I. General ......................................... 70– 26

II. Over 600 Volts, Nominal .................... 70– 33

110 Requirements for Electrical Installations ..... 70– 34

I. General ......................................... 70– 34

II. 600 Volts, Nominal, or Less ................ 70– 37

III. Over 600 Volts, Nominal .................... 70– 40

IV. Tunnel Installations over 600 Volts,

Nominal ......................................... 70– 43

V. Manholes and Other Electrical

Enclosures Intended for Personnel

Entry, All Voltages ............................ 70– 44

Chapter 2 Wiring and Protection

200 Use and Identification of Grounded

Conductors .......................................... 70– 46

210 Branch Circuits ................................... 70– 48

I. General Provisions ............................ 70– 48

II. Branch-Circuit Ratings ....................... 70– 52

III. Required Outlets .............................. 70– 55

215 Feeders ............................................. 70– 59

220 Branch-Circuit, Feeder, and Service

Calculations ........................................ 70– 61

I. General ......................................... 70– 61

II. Branch-Circuit Load Calculations .......... 70– 61

III. Feeder and Service Load Calculations .... 70– 64

IV. Optional Feeder and Service Load

Calculations ..................................... 70– 67

V. Farm Load Calculations .................... 70– 70

225 Outside Branch Circuits and Feeders ......... 70– 71

I. General ......................................... 70– 71

II. Buildings or Other Structures Supplied

by a Feeder(s) or Branch Circuit(s) ........ 70– 74

III. Over 600 Volts ................................ 70– 76

230 Services ............................................ 70– 78

I. General ......................................... 70– 78

II. Overhead Service Conductors .............. 70– 79

III. Underground Service Conductors .......... 70– 81

IV. Service-Entrance Conductors ............... 70– 81

V. Service Equipment — General ............. 70– 84

VI. Service Equipment — Disconnecting

Means ............................................ 70– 84

VII. Service Equipment — Overcurrent

Protection ....................................... 70– 86

VIII. Services Exceeding 600 Volts,

Nominal ......................................... 70– 87

240 Overcurrent Protection ........................... 70– 88

I. General ......................................... 70– 88

II. Location ........................................ 70– 92

III. Enclosures ...................................... 70– 95

ARTICLE

IV. Disconnecting and Guarding ................ 70– 96

V. Plug Fuses, Fuseholders, and Adapters ... 70– 96

VI. Cartridge Fuses and Fuseholders ........... 70– 97

VII. Circuit Breakers ............................... 70– 97

VIII. Supervised Industrial Installations ......... 70– 98

IX. Overcurrent Protection Over 600 Volts,

Nominal ......................................... 70–100

250 Grounding and Bonding ......................... 70–100

I. General ......................................... 70–100

II. System Grounding ........................... 70–103

III. Grounding Electrode System and

Grounding Electrode Conductor ............. 70–111

IV. Enclosure, Raceway, and Service

Cable Connections ............................. 70–116

V. Bonding ......................................... 70–117

VI. Equipment Grounding and Equipment

Grounding Conductors ........................ 70–120

VII. Methods of Equipment Grounding ......... 70–125

VIII. Direct-Current Systems ...................... 70–128

IX. Instruments, Meters, and Relays ........... 70–129

X. Grounding of Systems and Circuits of

over 1 kV ....................................... 70–129

280 Surge Arresters, Over 1 kV ..................... 70–131

I. General ......................................... 70–131

II. Installation ..................................... 70–132

III. Connecting Surge Arresters ................. 70–132

285 Surge-Protective Devices (SPDs), 1 kV or

Less .................................................. 70–133

I. General ......................................... 70–133

II. Installation ..................................... 70–133

III. Connecting SPDs ............................. 70–133

Chapter 3 Wiring Methods and Materials

300 Wiring Methods ................................... 70–135

I. General Requirements ........................ 70–135

II. Requirements for over 600 Volts,

Nominal ......................................... 70–145

310 Conductors for General Wiring ................ 70–147

I. General ......................................... 70–147

II. Installation ..................................... 70–147

III. Construction Specifications ................. 70–168

312 Cabinets, Cutout Boxes, and Meter Socket

Enclosures .......................................... 70–173

I. Installation ..................................... 70–174

II. Construction Specifications ................. 70–175

314 Outlet, Device, Pull, and Junction Boxes;

Conduit Bodies; Fittings; and Handhole

Enclosures .......................................... 70–177

I. Scope and General ............................ 70–177

II. Installation ..................................... 70–177

III. Construction Specifications ................. 70–184

IV. Pull and Junction Boxes, Conduit

Bodies, and Handhole Enclosures for

Use on Systems over 600 Volts,

Nominal ........................................

 

 

 

ARTICLE

II. Installation ..................................... 70–290

III. Disconnecting Means ........................ 70–293

IV. Construction ................................... 70–294

V. Marking ........................................ 70–295

424 Fixed Electric Space-Heating Equipment ..... 70–295

I. General ......................................... 70–295

II. Installation ..................................... 70–296

III. Control and Protection of Fixed

Electric Space-Heating Equipment ......... 70–296

IV. Marking of Heating Equipment ............ 70–298

V. Electric Space-Heating Cables .............. 70–298

VI. Duct Heaters ................................... 70–300

VII. Resistance-Type Boilers ..................... 70–300

VIII. Electrode-Type Boilers ....................... 70–301

IX. Electric Radiant Heating Panels and

Heating Panel Sets ............................ 70–302

426 Fixed Outdoor Electric Deicing and

Snow-Melting Equipment ........................ 70–304

I. General ......................................... 70–304

II. Installation ..................................... 70–305

III. Resistance Heating Elements ............... 70–305

IV. Impedance Heating ........................... 70–306

V. Skin-Effect Heating ........................... 70–306

VI. Control and Protection ....................... 70–307

427 Fixed Electric Heating Equipment for

Pipelines and Vessels ............................. 70–307

I. General ......................................... 70–307

II. Installation ..................................... 70–308

III. Resistance Heating Elements ............... 70–308

IV. Impedance Heating ........................... 70–309

V. Induction Heating ............................. 70–309

VI. Skin-Effect Heating ........................... 70–309

VII. Control and Protection ....................... 70–309

430 Motors, Motor Circuits, and Controllers ...... 70–310

I. General ......................................... 70–310

II. Motor Circuit Conductors ................... 70–316

III. Motor and Branch-Circuit Overload

Protection ....................................... 70–319

IV. Motor Branch-Circuit Short-Circuit

and Ground-Fault Protection ................. 70–322

V. Motor Feeder Short-Circuit and

Ground-Fault Protection ...................... 70–325

VI. Motor Control Circuits ....................... 70–326

VII. Motor Controllers ............................. 70–327

VIII. Motor Control Centers ....................... 70–329

IX. Disconnecting Means ........................ 70–330

X. Adjustable-Speed Drive Systems ........... 70–333

XI. Over 600 Volts, Nominal .................... 70–334

XII. Protection of Live Parts — All

Voltages ......................................... 70–335

XIII. Grounding — All Voltages .................. 70–335

XIV. Tables ........................................... 70–336

440 Air-Conditioning and Refrigerating

Equipment .......................................... 70–340

I. General ......................................... 70–340

II. Disconnecting Means ........................ 70–342

III. Branch-Circuit Short-Circuit and

Ground-Fault Protection ...................... 70–343

IV. Branch-Circuit Conductors .................. 70–344

ARTICLE

V. Controllers for Motor-Compressors ........ 70–344

VI. Motor-Compressor and Branch-Circuit

Overload Protection ........................... 70–345

VII. Provisions for Room Air Conditioners .... 70–346

445 Generators ......................................... 70–347

450 Transformers and Transformer Vaults

(Including Secondary Ties) ...................... 70–348

I. General Provisions ............................ 70–348

II. Specific Provisions Applicable to

Different Types of Transformers ............ 70–352

III. Transformer Vaults ........................... 70–354

455 Phase Converters ................................. 70–355

I. General ......................................... 70–355

II. Specific Provisions Applicable to

Different Types of Phase Converters ....... 70–356

460 Capacitors .......................................... 70–357

I. 600 Volts, Nominal, and Under ............ 70–357

II. Over 600 Volts, Nominal .................... 70–358

470 Resistors and Reactors ........................... 70–358

I. 600 Volts, Nominal, and Under ............ 70–358

II. Over 600 Volts, Nominal .................... 70–359

480 Storage Batteries .................................. 70–359

490 Equipment, Over 600 Volts, Nominal ......... 70–360

I. General ......................................... 70–360

II. Equipment — Specific Provisions ......... 70–361

III. Equipment — Metal-Enclosed Power

Switchgear and Industrial Control

Assemblies ...................................... 70–363

IV. Mobile and Portable Equipment ............ 70–365

V. Electrode-Type Boilers ....................... 70–366

Chapter 5 Special Occupancies

500 Hazardous (Classified) Locations, Classes

I, II, and III, Divisions 1 and 2 ................. 70–367

501 Class I Locations ................................. 70–376

I. General ......................................... 70–376

II. Wiring .......................................... 70–376

III. Equipment ...................................... 70–381

502 Class II Locations ................................ 70–386

I. General ......................................... 70–386

II. Wiring .......................................... 70–386

III. Equipment ...................................... 70–388

503 Class III Locations ............................... 70–391

I. General ......................................... 70–391

II. Wiring .......................................... 70–391

III. Equipment ...................................... 70–392

504 Intrinsically Safe Systems ....................... 70–394

505 Zone 0, 1, and 2 Locations ..................... 70–397

506 Zone 20, 21, and 22 Locations for

Combustible Dusts or Ignitible

Fibers/Flyings ...................................... 70–412

510 Hazardous (Classified) Locations —

Specific .............................................. 70–419

 

ARTICLE

511 Commercial Garages, Repair and Storage .... 70–419

513 Aircraft Hangars .................................. 70–422

514 Motor Fuel Dispensing Facilities .............. 70–425

515 Bulk Storage Plants .............................. 70–429

516 Spray Application, Dipping, and Coating

Processes ............................................ 70–434

517 Health Care Facilities ............................ 70–440

I. General ......................................... 70–440

II. Wiring and Protection ........................ 70–442

III. Essential Electrical System .................. 70–445

IV. Inhalation Anesthetizing Locations ........ 70–452

V. X-Ray Installations ........................... 70–455

VI. Communications, Signaling Systems,

Data Systems, Fire Alarm Systems,

and Systems Less Than 120 Volts,

Nominal ......................................... 70–456

VII. Isolated Power Systems ...................... 70–457

518 Assembly Occupancies .......................... 70–458

520 Theaters, Audience Areas of Motion

Picture and Television Studios,

Performance Areas, and Similar Locations ... 70–459

I. General ......................................... 70–459

II. Fixed Stage Switchboards ................... 70–461

III. Fixed Stage Equipment Other Than

Switchboards ................................... 70–462

IV. Portable Switchboards on Stage ............ 70–463

V. Portable Stage Equipment Other Than

Switchboards ................................... 70–466

VI. Dressing Rooms ............................... 70–468

VII. Grounding ...................................... 70–468

522 Control Systems for Permanent

Amusement Attractions ........................... 70–468

I. General ......................................... 70–468

II. Control Circuits ............................... 70–468

III. Control Circuit Wiring Methods ........... 70–469

525 Carnivals, Circuses, Fairs, and Similar

Events ............................................... 70–470

I. General Requirements ........................ 70–470

II. Power Sources ................................. 70–470

III. Wiring Methods ............................... 70–471

IV. Grounding and Bonding ..................... 70–472

530 Motion Picture and Television Studios

and Similar Locations ............................ 70–472

I. General ......................................... 70–472

II. Stage or Set .................................... 70–473

III. Dressing Rooms ............................... 70–475

IV. Viewing, Cutting, and Patching Tables .... 70–475

V. Cellulose Nitrate Film Storage Vaults ..... 70–475

VI. Substations ..................................... 70–475

540 Motion Picture Projection Rooms ............. 70–476

I. General ......................................... 70–476

II. Equipment and Projectors of the

Professional Type .............................. 70–476

III. Nonprofessional Projectors .................. 70–477

ARTICLE

IV. Audio Signal Processing,

Amplification, and Reproduction

Equipment ...................................... 70–477

545 Manufactured Buildings ......................... 70–477

547 Agricultural Buildings ........................... 70–478

550 Mobile Homes, Manufactured Homes, and

Mobile Home Parks ............................... 70–481

I. General ......................................... 70–481

II. Mobile and Manufactured Homes ......... 70–482

III. Services and Feeders ......................... 70–489

551 Recreational Vehicles and Recreational

Vehicle Parks ....................................... 70–490

I. General ......................................... 70–490

II. Combination Electrical Systems ............ 70–491

III. Other Power Sources ......................... 70–492

IV. Nominal 120-Volt or 120/240-Volt

Systems .......................................... 70–493

V. Factory Tests ................................... 70–500

VI. Recreational Vehicle Parks .................. 70–500

552 Park Trailers ....................................... 70–503

I. General ......................................... 70–503

II. Low-Voltage Systems ........................ 70–503

III. Combination Electrical Systems ............ 70–504

IV. Nominal 120-Volt or 120/240-Volt

Systems .......................................... 70–505

V. Factory Tests ................................... 70–511

553 Floating Buildings ................................ 70–512

I. General ......................................... 70–512

II. Services and Feeders ......................... 70–512

III. Grounding ...................................... 70–512

555 Marinas and Boatyards .......................... 70–513

590 Temporary Installations .......................... 70–516

Chapter 6 Special Equipment

600 Electric Signs and Outline Lighting ........... 70–519

I. General ......................................... 70–519

II. Field-Installed Skeleton Tubing,

Outline Lighting, and Secondary

Wiring ........................................... 70–523

604 Manufactured Wiring Systems ................. 70–525

605 Office Furnishings (Consisting of Lighting

Accessories and Wired Partitions) .............. 70–526

610 Cranes and Hoists ................................ 70–527

I. General ......................................... 70–527

II. Wiring .......................................... 70–527

III. Contact Conductors ........................... 70–530

IV. Disconnecting Means ........................ 70–531

V. Overcurrent Protection ....................... 70–531

VI. Control .......................................... 70–532

VII. Grounding ...................................... 70–532

620 Elevators, Dumbwaiters, Escalators,

Moving Walks, Platform Lifts, and

Stairway Chairlifts ................................ 70–532

I. General ......................................... 70–532

 

 

 

ARTICLE

II. Conductors ..................................... 70–534

III. Wiring .......................................... 70–536

IV. Installation of Conductors ................... 70–538

V. Traveling Cables .............................. 70–539

VI. Disconnecting Means and Control ......... 70–540

VII. Overcurrent Protection ....................... 70–542

VIII. Machine Rooms, Control Rooms,

Machinery Spaces, and Control Spaces .... 70–542

IX. Grounding ...................................... 70–543

X. Emergency and Standby Power

Systems .......................................... 70–543

625 Electric Vehicle Charging System ............. 70–543

I. General ......................................... 70–543

II. Wiring Methods ............................... 70–544

III. Equipment Construction ..................... 70–544

IV. Control and Protection ....................... 70–545

V. Electric Vehicle Supply Equipment

Locations ........................................ 70–545

626 Electrified Truck Parking Spaces .............. 70–547

I. General ......................................... 70–547

II. Electrified Truck Parking Space

Electrical Wiring Systems .................... 70–548

III. Electrified Truck Parking Space Supply

Equipment ...................................... 70–549

IV. Transport Refrigerated Units (TRUs) ...... 70–551

630 Electric Welders ................................... 70–552

I. General ......................................... 70–552

II. Arc Welders .................................... 70–552

III. Resistance Welders ........................... 70–553

IV. Welding Cable ................................. 70–554

640 Audio Signal Processing, Amplification,

and Reproduction Equipment .................... 70–554

I. General ......................................... 70–554

II. Permanent Audio System Installations .... 70–557

III. Portable and Temporary Audio System

Installations ..................................... 70–558

645 Information Technology Equipment ........... 70–559

647 Sensitive Electronic Equipment ................ 70–563

650 Pipe Organs ........................................ 70–564

660 X-Ray Equipment ................................ 70–565

I. General ......................................... 70–565

II. Control .......................................... 70–566

III. Transformers and Capacitors ................ 70–566

IV. Guarding and Grounding .................... 70–566

665 Induction and Dielectric Heating

Equipment .......................................... 70–567

I. General ......................................... 70–567

II. Guarding, Grounding, and Labeling ....... 70–568

668 Electrolytic Cells ................................. 70–568

669 Electroplating ...................................... 70–571

670 Industrial Machinery ............................. 70–572

675 Electrically Driven or Controlled

Irrigation Machines ............................... 70–573

I. General ......................................... 70–573

II. Center Pivot Irrigation Machines .......... 70–575

ARTICLE

680 Swimming Pools, Fountains, and Similar

Installations ......................................... 70–575

I. General ......................................... 70–575

II. Permanently Installed Pools ................. 70–579

III. Storable Pools ................................. 70–585

IV. Spas and Hot Tubs ........................... 70–586

V. Fountains ....................................... 70–588

VI. Pools and Tubs for Therapeutic Use ...... 70–589

VII. Hydromassage Bathtubs ..................... 70–590

682 Natural and Artificially Made Bodies of

Water ................................................ 70–590

I. General ......................................... 70–590

II. Installation ..................................... 70–591

III. Grounding and Bonding ..................... 70–592

685 Integrated Electrical Systems ................... 70–592

I. General ......................................... 70–592

II. Orderly Shutdown ............................ 70–593

690 Solar Photovoltaic (PV) Systems .............. 70–593

I. General ......................................... 70–593

II. Circuit Requirements ......................... 70–597

III. Disconnecting Means ........................ 70–599

IV. Wiring Methods ............................... 70–601

V. Grounding ...................................... 70–603

VI. Marking ........................................ 70–604

VII. Connection to Other Sources ............... 70–605

VIII. Storage Batteries .............................. 70–605

IX. Systems over 600 Volts ...................... 70–607

692 Fuel Cell Systems ................................ 70–607

I. General ......................................... 70–607

II. Circuit Requirements ......................... 70–608

III. Disconnecting Means ........................ 70–608

IV. Wiring Methods ............................... 70–609

V. Grounding ...................................... 70–609

VI. Marking ........................................ 70–609

VII. Connection to Other Circuits ............... 70–609

VIII. Outputs Over 600 Volts ...................... 70–609

694 Small Wind Electric Systems ................... 70–610

I. General ......................................... 70–610

II. Circuit Requirements ......................... 70–611

III. Disconnecting Means ........................ 70–612

IV. Wiring Methods ............................... 70–613

V. Grounding ...................................... 70–613

VI. Marking ........................................ 70–614

VII. Connection to Other Sources ............... 70–614

VIII. Storage Batteries .............................. 70–614

IX. Systems over 600 Volts ...................... 70–616

695 Fire Pumps ......................................... 70–616

Chapter 7 Special Conditions

700 Emergency Systems .............................. 70–622

I. General ......................................... 70–622

II. Circuit Wiring ................................. 70–623

III. Sources of Power ............................. 70–624

IV. Emergency System Circuits for

Lighting and Power ........................... 70–626

V. Control — Emergency Lighting

Circuits .......................................... 70–626

ARTICLE

VI. Overcurrent Protection ....................... 70–627

701 Legally Required Standby Systems ............ 70–627

I. General ......................................... 70–627

II. Circuit Wiring ................................. 70–628

III. Sources of Power ............................. 70–628

IV. Overcurrent Protection ....................... 70–630

702 Optional Standby Systems ...................... 70–630

I. General ......................................... 70–630

II. Wiring .......................................... 70–631

705 Interconnected Electric Power Production

Sources .............................................. 70–631

I. General ......................................... 70–631

II. Utility-Interactive Inverters ................. 70–634

III. Generators ...................................... 70–635

708 Critical Operations Power Systems

(COPS) .............................................. 70–635

I. General ......................................... 70–636

II. Circuit Wiring and Equipment .............. 70–637

III. Power Sources and Connection ............ 70–638

IV. Overcurrent Protection ....................... 70–640

V. System Performance and Analysis ......... 70–640

720 Circuits and Equipment Operating at Less

Than 50 Volts ...................................... 70–640

725 Class 1, Class 2, and Class 3

Remote-Control, Signaling, and

Power-Limited Circuits ........................... 70–641

I. General ......................................... 70–641

II. Class 1 Circuits ............................... 70–642

III. Class 2 and Class 3 Circuits ................ 70–644

IV. Listing Requirements ......................... 70–648

727 Instrumentation Tray Cable: Type ITC ........ 70–650

760 Fire Alarm Systems .............................. 70–651

I. General ......................................... 70–651

II. Non–Power-Limited Fire Alarm

(NPLFA) Circuits .............................. 70–652

III. Power-Limited Fire Alarm (PLFA)

Circuits .......................................... 70–654

IV. Listing Requirements ......................... 70–657

770 Optical Fiber Cables and Raceways ........... 70–660

I. General ......................................... 70–660

II. Cables Outside and Entering Buildings ... 70–661

III. Protection ...................................... 70–661

IV. Grounding Methods .......................... 70–661

V. Installation Methods Within Buildings .... 70–663

VI. Listing Requirements ......................... 70–666

Chapter 8 Communications Systems

800 Communications Circuits ........................ 70–669

I. General ......................................... 70–669

II. Wires and Cables Outside and

Entering Buildings ............................. 70–670

III. Protection ...................................... 70–672

IV. Grounding Methods .......................... 70–673

V. Installation Methods Within Buildings ... 70–675

VI. Listing Requirements ......................... 70–680

ARTICLE

810 Radio and Television Equipment ............... 70–682

I. General ......................................... 70–682

II. Receiving Equipment — Antenna

Systems .......................................... 70–682

III. Amateur and Citizen Band

Transmitting and Receiving Stations

— Antenna Systems ........................... 70–685

IV. Interior Installation — Transmitting

Stations .......................................... 70–686

820 Community Antenna Television and Radio

Distribution Systems .............................. 70–686

I. General ......................................... 70–686

II. Coaxial Cables Outside and Entering

Buildings ........................................ 70–687

III. Protection ...................................... 70–688

IV. Grounding Methods .......................... 70–689

V. Installation Methods Within Buildings .... 70–690

VI. Listing Requirements ......................... 70–693

830 Network-Powered Broadband

Communications Systems ........................ 70–695

I. General ......................................... 70–695

II. Cables Outside and Entering Buildings ... 70–697

III. Protection ..............

  • ۱۳۹۵/۰۲/۲۳
  • 0
avatars
نویسنده : تیم تولید محتوای ایکهربا

نظرات خود را با ما درمیان بگذارید

محصولات مرتبط

مطالب مرتبط