2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF
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2020 NEC,NFPA 70,NATIONAL ELECTRICAL CODE - FORMAT/PDF

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About This Product

The code you know and use—revamped to keep pace with ever-evolving electrical hazards and challenges.

Edition: 2020
Language: English
Pages: 918
Note 1 : File: PDF, 150.10 MB (D/L)
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Prepare for the electrical challenges of tomorrow, today, with NFPA 70, National Electrical Code (NEC), 2020 edition. PDF FORMATE.

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The world never stops changing, so it's crucial to keep learning how to keep it safe. Incorporated by reference in all 50 states and used across the globe, NFPA 70®, National Electrical Code® (NEC®), is the benchmark standard for electrical safety in residential, commercial, and industrial settings.

NFPA 70, NEC, was first published in 1897 and is continually put through a rigorous review process to keep it up to date with the most current industry practices, emerging trends, and the development and introduction of new technologies. The new NEC provides the latest requirements for safer and more effective electrical design, installation, and inspection, including provisions for wiring, overcurrent protection, grounding, and equipment..

Get up-to-code and prepared for the safety challenges of new sources of electrical power with the NEC, 2020 edition.

The revised and expanded NFPA 70, National Electrical Code, features state-of-the-art information for safe electrical practices for public and private buildings, homes and structures, outdoor yards and lots, utility equipment, installations that connect to the power grid, and consumer-owned power generation systems and equipment.

Content has been added, edited, and reorganized to address safety for workers, energy systems and electric vehicles, limited energy, and communication systems.

 

Impactful changes include:

  • New requirements for exterior emergency disconnects of one- and two-family dwellings for improved electrical safety for emergency responders
  • Revisions to service disconnect rules to help protect electrical workers from arc flash hazards
  • Adapted and adjusted requirements for installation practices of new technologies to meet the evolving demand of power over Ethernet
  • Updates to modernize tables currently in use for calculations to reflect improvements in energy efficiency and align with evolving codes
  • Revised requirements for ground-fault protection within marinas and boatyards
  • Introduction of guidelines for the safe use of electric vehicles (electric vehicle power export equipment) as a backup or emergency power source for a building or a home
  • Reorganization of Article 310, including new user-friendly numbering for important ampacity tables, and new definition for cable bundle in Article 725
  • Relocation of surge protection device requirements to new Article 242
  • Revisions to alternative energy systems and electric vehicle requirements to clarify what portions of the PV system are covered by the requirements of Article 690 and the line side and load side connections of interconnected power supply sources, and to clearly distinguish energy storage systems from storage battery systems
  • Reorganization of Article 800 to provide a general set of requirements to apply throughout the Chapter 8 articles
  • Revisions to requirements for communications cables that are also carrying power to communication devices and revisions to the current limit for cables carrying power and data

The NEC, 2020 edition, introduces significant new requirements for:

  • The residential installation of receptacle outlets serving island and peninsular countertops and for surge protection of services supplying dwelling units
  • Working space for “housekeeping pads” for electrical equipment, the installation of wiring methods in exit enclosures, sizing supply and load conductors used with adjustable-speed drive systems, and AFCI protection of branch circuits in patient sleeping areas in care facilities
  • Calculating the load of electric vehicle supply equipment with variable current settings
  • Worker safety in identifying the source of power for disconnecting means and for egress from spaces containing large electrical equipment
  • Grounding of disconnecting means installed on the supply-side of service disconnecting means
  • Cables installed exposed on ceiling surfaces and sidewalls
  • Special occupancies, special equipment, and special conditions, including installation of splash pads, the use of “Type P” cables in hazardous classified locations, and the reinspection of swimming pools and other bodies of water

Help protect life and property with the most relevant electrical requirements.

Get the cutting edge information you need to identify and overcome the latest hazards and complexities in electrical work. Order your copy of NFPA 70®, National Electrical Code, 2020 edition, today.

Interested in other editions of the NEC? Use the drop down menu above to select the edition year you need.

NFPA 70® National Electrical Code®, 2020 Edition

90 Introduction

Chapter 1 General

100 Definitions

110 Requirements for Electrical Installations

Chapter 2 Wiring and Protection

200 Use and Identification of Grounded Conductors

210 Branch Circuits

215 Feeders

220 Branch-Circuit, Feeder, and Service Load Calculations

225 Outside Branch Circuits and Feeders

230 Services

240 Overcurrent Protection

242 Overvoltage Protection

250 Grounding and Bonding

Chapter 3 Wiring Methods and Materials

300 General Requirements for Wiring Methods and Materials

310 Conductors for General Wiring

311 Medium Voltage Conductors and Cable

312 Cabinets, Cutout Boxes, and Meter Socket Enclosures

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

320 Armored Cable: Type AC

322 Flat Cable Assemblies: Type FC

324 Flat Conductor Cable: Type FCC

326 Integrated Gas Spacer Cable: Type IGS

330 Metal-Clad Cable: Type MC

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

334 Nonmetallic-Sheathed Cable: Types NM and NMC

336 Power and Control Tray Cable: Type TC

337 Type P Cable

338 Service-Entrance Cable: Types SE and USE

340 Underground Feeder and Branch-Circuit Cable: Type UF

342 Intermediate Metal Conduit: Type IMC

344 Rigid Metal Conduit: Type RMC

348 Flexible Metal Conduit: Type FMC

350 Liquidtight Flexible Metal Conduit: Type LFMC

352 Rigid Polyvinyl Chloride Conduit: Type PVC

353 High Density Polyethylene Conduit: Type HDPE Conduit

354 Nonmetallic Underground Conduit with Conductors: Type NUCC

355 Reinforced Thermosetting Resin Conduit: Type RTRC

356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC

358 Electrical Metallic Tubing: Type EMT

360 Flexible Metallic Tubing: Type FMT

362 Electrical Nonmetallic Tubing: Type ENT

366 Auxiliary Gutters

368 Busways

370 Cablebus

372 Cellular Concrete Floor Raceways

374 Cellular Metal Floor Raceways

376 Metal Wireways

378 Nonmetallic Wireways

380 Multioutlet Assembly

382 Nonmetallic Extensions

384 Strut-Type Channel Raceway

386 Surface Metal Raceways

388 Surface Nonmetallic Raceways

390 Underfloor Raceways

392 Cable Trays

393 Low-Voltage Suspended Ceiling Power Distribution Systems

394 Concealed Knob-and-Tube Wiring

396 Messenger-Supported Wiring

398 Open Wiring on Insulators

399 Outdoor Overhead Conductors over 1000 Volts

Chapter 4 Equipment for General Use

400 Flexible Cords and Flexible Cables

402 Fixture Wires

404 Switches

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

408 Switchboards, Switchgear, and Panelboards

409 Industrial Control Panels

410 Luminaires, Lampholders, and Lamps

411 Low-Voltage Lighting

422 Appliances

424 Fixed Electric Space-Heating Equipment

425 Fixed Resistance and Electrode Industrial Process Heating Equipment

426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment

427 Fixed Electric Heating Equipment for Pipelines and Vessels

430 Motors, Motor Circuits, and Controllers

440 Air-Conditioning and Refrigerating Equipment

445 Generators

450 Transformers and Transformer Vaults (Including Secondary Ties)

455 Phase Converters

460 Capacitors

470 Resistors and Reactors

480 Storage Batteries

490 Equipment Over 1000 Volts, Nominal

Chapter 5 Special Occupancies

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

501 Class I Locations

502 Class II Locations

503 Class III Locations

504 Intrinsically Safe Systems

505 Zone 0, 1, and 2 Locations

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

510 Hazardous (Classified) Locations - Specific

511 Commercial Garages, Repair and Storage

513 Aircraft Hangars

514 Motor Fuel Dispensing Facilities

515 Bulk Storage Plants

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

517 Health Care Facilities

518 Assembly Occupancies

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

522 Control Systems for Permanent Amusement Attractions

525 Carnivals, Circuses, Fairs, and Similar Events

530 Motion Picture and Television Studios and Similar Locations

540 Motion Picture Projection Rooms

545 Manufactured Buildings and Relocatable Structures

547 Agricultural Buildings

550 Mobile Homes, Manufactured Homes, and Mobile Home Parks

551 Recreational Vehicles and Recreational Vehicle Parks

552 Park Trailers

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

590 Temporary Installations

Chapter 6 Special Equipment

600 Electric Signs and Outline Lighting

604 Manufactured Wiring Systems

605 Office Furnishings

610 Cranes and Hoists

620 Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, and Stairway Chairlifts

625 Electric Vehicle Charging System

626 Electrified Truck Parking Spaces

630 Electric Welders

640 Audio Signal Processing, Amplification, and Reproduction Equipment

645 Information Technology Equipment

646 Modular Data Centers

647 Sensitive Electronic Equipment

650 Pipe Organs

660 X-Ray Equipment

665 Induction and Dielectric Heating Equipment

668 Electrolytic Cells

669 Electroplating

670 Industrial Machinery

675 Electrically Driven or Controlled Irrigation Machines

680 Swimming Pools, Fountains, and Similar Installations

682 Natural and Artificially Made Bodies of Water

685 Integrated Electrical Systems

690 Solar Photovoltaic (PV) Systems

691 Large-Scale Photovoltaic (PV) Electric Supply Stations

692 Fuel Cell Systems

694 Wind Electric Systems

695 Fire Pumps

Chapter 7 Special Conditions

700 Emergency Systems

701 Legally Required Standby Systems

702 Optional Standby Systems

705 Interconnected Electric Power Production Sources

706 Energy Storage Systems

708 Critical Operations Power Systems (COPS)

710 Stand-Alone Systems

712 Direct Current Microgrids

720 Circuits and Equipment Operating at Less Than 50 Volts

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

727 Instrumentation Tray Cable: Type ITC

728 Fire-Resistive Cable Systems

750 Energy Management Systems

760 Fire Alarm Systems

770 Optical Fiber Cables

Chapter 8 Communications Systems

800 General Requirements for Communications Systems

805 Communications Circuits

810 Radio and Television Equipment

820 Community Antenna Television and Radio Distribution Systems

830 Network-Powered Broadband Communications Systems

840 Premises-Powered Broadband Communications Systems

Chapter 9 Tables

Informative Annex A: Product Safety Standards

Informative Annex B: Application Information for Ampacity Calculation

Informative Annex C: Conduit, Tubing, and Cable Tray Fill Tables for Conductors and Fixture Wires of the Same Size

Informative Annex D: Examples

Informative Annex E: Types of Construction

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

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

Informative Annex H: Administration and Enforcement

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

Informative Annex J: ADA Standards for Accessible Design

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