For U.S.Customer Service and Order Inquiries, Call 1-800-816-7809 or Fax 1-800-816-7810. For U.S.Technical Support, Call 1-888-862-3289 or Fax 901-252-1321. For Tool Service and Repair, Call 1-800-284-TOOL (8665). Thomas & Betts Corporation Electrical Division 8155 T&B Boulevard Memphis, Tennessee 38125 $5.00 USD ©2007 Thomas & Betts Corporation. All rights reserved. Specifications are subject to change without notice. Printed in U.S.A. 09/07/30M Order No. GM-201 United States Technical Services United States Technical Services www.tnb.com www.tnb.com Tel: 901.252.8000 Tel: 888.862.3289 Tel: 901.252.8000 Tel: 888.862.3289 800.816.7809 800.816.7809 Fax: 901.252.1354 Fax: 901.252.1354 Fast, Easy Grounding UL Listed to Meet to Meet 2008 NEC® New Requirements Requirements! for Fluorescent Fixtures and Ballasts! The Blackburn®Intersystem Bonding Termination Meter Box Ground Clamp provides a convenient,reliable grounding for coaxial or telephone drop wire runs to meet new requirements of the 2008 NEC®. Available in two sizes, Count on Thomas & Betts to help you meet the latest standards and code updates! this versatile,adjustable,two-piece clamp can mount either The Sta-Kon®Luminaire Disconnect is the first UL®listed,CSA certified device available vertically on the side or horizontally across the top of any to meet the UL standard for fluorescent light fixtures taking effect January 1,2008. meter box in service — without interfering with cover removal. Meets 2008 NEC® Section 410.130(G) Meets 2008 NEC® Section 250.94 requirements. See page 81 requirements. See page 28 •Single shallow,pointed bolt enables fast and easy installation and positive ground connection •Dual steel points on slotted bracket penetrate painted surface,also providing a positive ground connection •Sturdy,reinforced,two-piece construction ensures long and safe service life •Steel clamp brackets mechanically Designed in accordance with NEC 410.130(G),CEC part I, galvanized to ASTM B695 with rule 30-308(4),the disconnect consists of two mating stainless steel hardware for superior halves.Simply connect the finger-safe female (line) side corrosion resistance via wire connectors to the incoming power side of the •Accepts the full range of #10 to circuit,and the male (load) side to the ballast.When #6 AWG ground wire commonly used disconnected,the device enables safe servicing of the in the CATV and telephone industries fixture and ballast without exposure to dangerous •Meets or exceeds industry requirements,Bellcore standards electrical shock hazard. and 2008 NEC®Section 250.94 requirements •UL Listed www.tnb.com Please ask your Thomas & Betts sales representative for a complete catalog Please ask your Thomas & Betts sales representative for a complete catalog www.tnb.com of quality Thomas & Betts electrical products or visit us at www.tnb.com. of quality Thomas & Betts electrical products or visit us at www.tnb.com. TnB_NEC07_001-004 9/6/07 4:38 PM Page 1 Table of Contents Introduction and Enforcement, Article 90 Page No. 90 Introduction..................................................................................................5 General, Articles 100 and 110 100 Definition......................................................................................................6 110 Requirements for Electrical Installations.....................................................7–9 Wiring and Protection, Articles 210–250 210 Branch Circuits.....................................................................................10–18 225 Outside Branch Circuits and Feeders...........................................................19 230 Services...............................................................................................20–21 250 Grounding and Bonding.........................................................................22–29 Wiring Methods and Materials, Articles 300–392 300 Wiring Methods....................................................................................30–38 310 Conductors for General Wiring.....................................................................39 314 Outlet,Device,Pull,and Function Boxes; Conduit Bodies; Fittings; and Handhole Enclosures......................................................................40–49 336 Power and Control Tray Cable:Type TC........................................................50 342 Intermediate Metal Conduit:Type IMC..........................................................51 344 Rigid Metal Conduit:Type RMC..............................................................52–53 348 Flexible Metal Conduit:Type FMC..........................................................54–56 350 Liquidtight Flexible Metal Conduit: Type LFMC...........................................................................................57–58 352 Polyvinyl Chloride Conduit: Type PVC..............................................................................................59–62 355 Reinforced Thermosetting Resin Conduit:Type RTRC.....................................................................................63 360 Flexible Metallic Tubing: Type FMT...................................................................................................64 362 Electrical Nonmetallic Tubing: Type ENT....................................................................................................65 376 Metal Wireways..........................................................................................66 382 Nonmetallic Extensions................................................................................67 384 Strut Type Channel Raceway........................................................................68 388 Surface Nonmetallic Raceways.............................................................................................69–70 392 Cable Trays.................................................................................................71 1 TnB_NEC07_001-004 9/6/07 4:38 PM Page 2 Table of Contents (continued) Equipment for General Use, Articles 404–427 Page No. 404 Switches..............................................................................................72–73 406 Receptacles,Cord Connectors, and Attachment Plugs (Caps).................................................................74–77 409 Industrial Control Panels..............................................................................78 410 Luminaires,Lampholders and Lamps.....................................................79–81 424 Fixed Electric Space Heating Equipment.......................................................82 427 Fixed Electric Heating Equipment.................................................................83 Special Occupancies, Articles 500–555 500 Hazardous (Classified) Locations Class I,II, and III Divisions 1 and 2..............................................................................84 501 Class I Locations...................................................................................85–86 505 Class 1 Zone 0,1 and 2 Locations..............................................................87 522 Control Systems for Permanent Amusement Attractions...............................................................................88 547 Agricultural Buildings............................................................................89–91 555 Marinas and Boatyards.........................................................................92–94 2 TnB_NEC07_001-004 9/6/07 4:38 PM Page 3 Table of Contents (continued) Special Equipment, Articles 600–830 Page No. 600 Electric Signs and Outline Lighting...............................................................95 604 Manufactured Wiring Systems.....................................................................96 625 Electric Vehicle Charging System Equipment................................................97 626 Electrified Truck Parking Spaces..................................................................98 680 Swimming Pools,Fountains and Similar Installations.............................99–101 682 Natural and Artificially Made Bodies of Water..............................................102 690 Solar Photovoltaic Systems................................................................103–104 700 Emergency Systems..................................................................................105 708 Critical Operations Power Systems.............................................................106 725 Class 1,Class 2 and Class 3 Remote-Control, Signaling and Power Limited Circuits.................................................107–111 727 Instrumentation Tray Cable:Type ITC..........................................................112 760 Fire Alarm Systems...........................................................................113–114 770 Optical Fiber Cables and Raceways...................................................115–116 800 Communications Circuits...................................................................117–120 810 Radio and Television Equipment.................................................................121 820 Community Antenna Television and Radio Distribution Systems...........122–123 830 Network-Powered Broadband Communications Systems.............................124 On the following pages are changes to the National Electrical Code for the 2008 Code cycle.This is not intended to be an iteration of all the changes,but a listings of those that may affect the Thomas & Betts product lines.For a complete document that includes all of the major changes,contact the International Association of Electrical Inspectors atwww.iaei.org. The title National Electrical Code and the acronym NEC are registered trademarks of the National Fire Protection Association.Quincy,Mass. This document was compiled through the efforts of the Technical Liaison Department of Thomas & Betts,and is the property of Thomas & Betts.If you have any questions or require interpretation assistance, please contact one of the following: Tim McNeive 1-800-888-0211 Ext.5785 Greg Steinman 1-800-888-0211 Ext.5719 George Dauberger 1-800-888-0211 Ext.5191 Do not duplicate any part of this publication without the permission of a member of the T&B Technical Liaison Department. © 2007 Thomas & Betts Corporation.Specifications are subject to change without notice. 3 TnB_NEC07_001-004 9/6/07 4:39 PM Page 4 Better read the NEW 2008 ANALYSIS before your next inspection More than ever, you need the Analysis of Changes, NEC-2008. New articles explore critical operations power sys- tems, reinforced thermosetting resin conduit, control systems for permanent amusement attractions, and electrified truck parking space equipment. Residential AFCI protection is extended. Most far-reaching is the definition of neutral. We’d recommend a thorough review of these and more than 350 other changes be- fore your jurisdiction adopts NEC-2008. Be the first in your group to know. You’ll be glad you did. Available in September. International Association of Electrical Inspectors 901 Waterfall Way, Richardson TX 75080-7702. Call: 1.800.786.4234 4 TnB_NEC07_005-012 9/6/07 4:38 PM Page 5 Article 90 Introduction Section 90.2(A)(2) FPN Scope; Covered. The fine print note that referenced additional information available in ANSI C2,National Electrical Safety Code,was deleted. Analysis of Change: The FPN reference to the National Electrical Safety T&B Product: Code,which contains provisions for installations on the line side of the service point,created confusion for the General installer,designer and AHJ working on the load side of the service point.Some of these provisions conflict with the NEC and removal of the FPN clears up the confusion. NEC 2007 © National Fire Protection Association 5 TnB_NEC07_005-012 9/6/07 4:38 PM Page 6 Article 100 Definition Section 100. A new definition was added to this article. Intersystem Bonding Termination.A device that provides a means for connecting communications system(s) grounding conductor(s)and bonding conductor(s) at the service equipment or at the disconnecting means for buildings or structures supplied by a feeder or branch circuit. Analysis of Change: The term was added to Article 100,Definitions,to correlate with the revision in 250.94 and in the Chapter 8 articles.The definition specifies the location of the device,which must have sufficient capacity to handle a minimum of three communications systems. T&B Product: Intersystem Bonding Termination 6 TnB_NEC07_005-012 9/6/07 4:38 PM Page 7 Article 110 Requirements for Electrical Installations Section 110.11 Deteriorating Agents. Specific equipment identified as Types 2,5,12,12K T&B Product: and 13 have been added to the products required to be protected against permanent damage from weather Weatherproof Boxes during the building process. Analysis of Change: Previously,equipment identified as “dry locations”,“Type 1”or “indoor use only”were required to be so protected.Equipment identified as Types 2,5,12,12K and 13 are intended for use in dry locations and equipment marked with the type number provides the necessary identification for enforcement of the requirement. Photo courtesy of IAEI. 7 TnB_NEC07_005-012 9/6/07 4:38 PM Page 8 Article 110 Requirements for Electrical Installations (continued) Section 110.12 (A) Mechanical Execution of Work; Unused Openings. “Unused openings other than those intended for operation of the equipment,intended for mounting purposes or permitted as part of the design for listed equipment,shall be closed to afford protection substantially equivalent to the wall of the equipment.Where metallic plugs or plates are used with nonmetallic T&B Product: enclosures,they shall be recessed at least Metal Outlet 6 mm (1⁄ in.) from the outer surface of the 4 Boxes and Device Boxes enclosure.” Analysis of Change: The application of the requirement only to “unused cable or raceway openings”has seemingly been expanded.Part of the design for many listed metallic outlet and devices boxes has included a variety of open holes and the listing standard restricts the total permissible open area in these boxes.It is possible for some confusion in the interpretation of the new language in this section with respect to metallic outlet boxes and covers. Photo courtesy of IAEI. 8