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National Electrical Code 2002

ISBN: 9780877654605 | 0877654603
Edition: 1st
Format: Paperback
Publisher: Del Mar Pub
Pub. Date: 9/19/2001

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SummaryTable of Contents
The #1 electrical reference, the 2002 National Electrical Code®, is now available through today's #1 electrical publisher, Delmar Publishers! The single most important reference in the electrical industry, the National Electrical Code® (NEC®), is updated every three years and outlines minimum standards for all types of electrical installations. Adopted as law by states, cities, and municipalities, the 2002 edition of the NEC® features newly adopted articles on transient voltage surge suppressors (Article 285), sensitive electronic equipment (Ar... MORE
... MORE
Administration and Enforcement23(6)
Introduction29(4)
General
Definitions
33(7)
General
33(6)
Over 600 Volts, Nominal
39(1)
Requirements for Electrical Installations
40(9)
General
40(3)
600 Volts, Nominal, or Less
43(2)
Over 600 Volts, Nominal
45(2)
Tunnel Installations over 600 Volts, Nominal
47(2)
Wiring and Protection
Use and Identification of Grounded Conductors
49(2)
Branch Circuits
51(9)
General Provisions
51(3)
Branch-Circuit Ratings
54(3)
Required Outlets
57(3)
Feeders
60(1)
Branch-Circuit, Feeder, and Service Calculations
61(8)
General
61(2)
Feeders and Services
63(3)
Optional Calculations for Computing Feeder and Service Loads
66(3)
Method for Computing Farm Loads
69(1)
Outside Branch Circuits and Feeders
69(6)
General
70(2)
More Than One Building or Other Structure
72(2)
Over 600 Volts
74(1)
Services
75(10)
General
75(2)
Overhead Service-Drop Conductors
77(1)
Underground Service-Lateral Conductors
78(1)
Service-Entrance Conductors
78(3)
Service Equipment---General
81(1)
Service Equipment---Disconnecting Means
81(1)
Service Equipment---Overcurrent Protection
82(2)
Services Exceeding 600 Volts, Nominal
84(1)
Overcurrent Protection
85(10)
General
85(3)
Location
88(3)
Enclosures
91(1)
Disconnecting and Guarding
92(1)
Plug Fuses, Fuseholders, and Adapters
92(1)
Cartridge Fuses and Fuseholders
93(1)
Circuit Breakers
93(1)
Supervised Industrial Installations
94(1)
Overcurrent Protection Over 600 Volts, Nominal
95(1)
Grounding
95(25)
General
95(3)
Circuit and System Grounding
98(6)
Grounding Electrode System and Grounding Electrode Conductor
104(4)
Enclosure, Raceway, and Service Cable Grounding
108(1)
Bonding
108(3)
Equipment Grounding and Equipment Grounding Conductors
111(4)
Methods of Equipment Grounding
115(2)
Direct-Current Systems
117(1)
Instruments, Meters, and Relays
118(1)
Grounding of Systems and Circuits of 1 kV and Over (High Voltage)
119(1)
Surge Arresters
120(2)
General
120(1)
Installation
121(1)
Connecting Surge Aresters
121(1)
Transient Voltage Surge Suppressors: TVSSs
122(1)
General
122(1)
Installation
122(1)
Connecting Transient Voltage Surge Suppressors
122(1)
Wiring Methods and Materials
Wiring Methods
123(10)
General Requirements
123(9)
Requirements for Over 600 Volts, Nominal
132(1)
Conductors for General Wiring
133(28)
Cabinets, Cutout Boxes, and Meter Socket Enclosures
161(3)
Installation
161(1)
Construction Specifications
162(2)
Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Manholes
164(9)
Scope and General
164(1)
Installation
165(5)
Construction Specifications
170(1)
Manholes and Other Electric Enclosures Intended for Personnel Entry
171(1)
Pull and Junction Boxes for Use on Systems Over 600 Volts, Nominal
172(1)
Armored Cable: Type AC
173(1)
General
173(1)
Installation
173(1)
Construction Specifications
174(1)
Flat Cable Assemblies: Type FC
174(1)
General
174(1)
Installation
174(1)
Construction
175(1)
Flat Conductor Cable: Type FCC
175(3)
General
175(1)
Installation
176(1)
Construction
177(1)
Integrated Gas Spacer Cable: Type IGS
178(1)
General
178(1)
Installation
178(1)
Construction Specifications
178(1)
Medium Voltage Cable: Type MV
179(1)
General
179(1)
Installation
179(1)
Construction Specifications
179(1)
Metal-Clad Cable: Type MC
179(2)
General
179(1)
Installation
179(2)
Construction Specifications
181(1)
Mineral-Insulated, Metal-Sheathed Cable: Type MI
181(1)
General
181(1)
Installation
181(1)
Construction Specifications
182(1)
Nonmetallic- Sheathed Cable: Types NM, NMC, and NMS
182(2)
General
182(1)
Installation
182(2)
Construction Specifications
184(1)
Power and Control Tray Cable: Type TC
184(2)
General
184(1)
Installation
185(1)
Construction Specifications
185(1)
Service-Entrance Cable: Types SE and USE
186(1)
General
186(1)
Installation
186(1)
Construction
186(1)
Underground Feeder and Branch-Circuit Cable: Type UF
187(1)
General
187(1)
Installation
187(1)
Construction Specifications
187(1)
Intermediate Metal Conduit: Type IMC
187(2)
General
187(1)
Installation
188(1)
Construction Specifications
189(1)
Rigid Metal Conduit: Type RMC
189(2)
General
189(1)
Installation
189(2)
Construction Specifications
191(1)
Flexible Metal Conduit: Type FMC
191(1)
General
191(1)
Installation
191(1)
Liquidtight Flexible Metal Conduit: Type LFMC
192(2)
General
192(1)
Installation
193(1)
Construction Specifications
193(1)
Rigid Nonmetallic Conduit: Type RNC
194(3)
General
194(1)
Installation
194(1)
Construction Specifications
195(2)
Nonmetallic Underground Conduit with Conductors: Type NUCC
197(1)
General
197(1)
Installation
197(1)
Construction Specifications
198(1)
Liquidtight Flexible Nonmetallic Conduit: Type LFNC
198(2)
General
198(1)
Installation
198(1)
Construction Specifications
199(1)
Electrical Metallic Tubing: Type EMT
200(1)
General
200(1)
Installation
200(1)
Construction Specifications
201(1)
Flexible Metallic Tubing: Type FMT
201(1)
General
201(1)
Installation
201(1)
Construction Specifications
202(1)
Electrical Nonmetallic Tubing: Type ENT
202(2)
General
202(1)
Installation
202(2)
Construction Specifications
204(1)
Auxiliary Gutters
204(2)
Busways
206(2)
General Requirements
206(1)
Requirements for Over 600 Volts, Nominal
207(1)
Cablebus
208(1)
Cellular Concrete Floor Raceways
209(1)
Cellular Metal Floor Raceways
210(1)
Installation
210(1)
Construction Specifications
211(1)
Metal Wireways
211(1)
General
211(1)
Installation
211(1)
Construction Specifications
212(1)
Nonmetallic Wireways
212(1)
General
212(1)
Installation
212(1)
Construction Specifications
213(1)
Multioutlet Assembly
213(1)
Nonmetallic Extensions
214(1)
General
214(1)
Installation
214(1)
Strut-Type Channel Raceway
215(1)
General
215(1)
Installation
215(1)
Construction Specifications
216(1)
Surface Metal Raceways
216(1)
General
216(1)
Installation
216(1)
Construction Specifications
217(1)
Surface Nonmetallic Raceways
217(1)
General
217(1)
Installation
217(1)
Construction Specifications
218(1)
Underfloor Raceways
218(1)
Cable Trays
219(6)
Concealed Knob-and-Tube Wiring
225(2)
General
225(1)
Installation
226(1)
Construction Specifications
226(1)
Messenger Supported Wiring
227(1)
General
227(1)
Installation
227(1)
Open Wiring on Insulators
227(4)
General
227(1)
Installation
227(2)
Construction Specifications
229(2)
Equipment for General Use
Flexible Cords and Cables
231(10)
General
231(8)
Construction Specifications
239(1)
Portable Cables Over 600 Volts, Nominal
240(1)
Fixture Wires
241(3)
Switches
244(3)
Installation
244(3)
Construction Specifications
247(1)
Receptacles, Cord Connectors, and Attachment Plugs (Caps)
247(3)
Switchboards and Panelboards
250(4)
General
250(1)
Switchboards
251(1)
Panelboards
252(1)
Construction Specifications
253(1)
Luminaires (Lighting Fixtures), Lampholders, and Lamps
254(10)
General
254(1)
Luminaire (Fixture) Locations
254(1)
Provisions at Luminaire (Fixture) Outlet Boxes, Canopies, and Pans
255(1)
Luminaire (Fixture) Supports
256(1)
Grounding
257(1)
Wiring of Luminaires (Fixtures)
257(2)
Construction of Luminaires (Fixtures)
259(1)
Installation of Lampholders
260(1)
Construction of Lampholders
260(1)
Lamps and Auxiliary Equipment
260(1)
Special Provisions for Flush and Recessed Luminaires (Fixtures)
260(1)
Construction of Flush and Recessed Luminaires (Fixtures)
261(1)
Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less
261(1)
Special Provisions for Electric-Discharge Lighting Systems of More Than 1000 Volts
262(1)
Lighting Track
263(1)
Lighting Systems Operating at 30 Volts or Less
264(1)
Appliances
264(5)
General
264(1)
Installation
264(3)
Disconnecting Means
267(1)
Construction
267(1)
Marking
268(1)
Fixed Electric Space-Heating Equipment
269(9)
General
269(1)
Installation
269(1)
Control and Protection of Fixed Electric Space-Heating Equipment
270(2)
Marking of Heating Equipment
272(1)
Electric Space-Heating Cables
272(2)
Duct Heaters
274(1)
Resistance-Type Boilers
274(1)
Electrode-Type Boilers
275(1)
Electric Radiant Heating Panels and Heating Panel Sets
276(2)
Fixed Outdoor Electric Deicing and Snow-Melting Equipment
278(3)
General
278(1)
Installation
279(1)
Resistance Heating Elements
279(1)
Impedance Heating
280(1)
Skin-Effect Heating
280(1)
Control and Protection
281(1)
Fixed Electric Heating Equipment for Pipelines and Vessels
281(3)
General
281(1)
Installation
282(1)
Resistance Heating Elements
282(1)
Impedance Heating
283(1)
Induction Heating
283(1)
Skin-Effect Heating
283(1)
Control and Protection
284(1)
Motors, Motor Circuits, and Controllers
284(28)
General
284(6)
Motor Circuit Conductors
290(2)
Motor and Branch-Circuit Overload Protection
292(3)
Motor Branch-Circuit Short-Circuit and Ground-Fault Protection
295(3)
Motor Feeder Short-Circuit and Ground-Fault Protection
298(1)
Motor Control Circuits
299(2)
Motor Controllers
301(1)
Motor Control Centers
302(2)
Disconnecting Means
304(3)
Over 600 Volts, Nominal
307(1)
Protection of Live Parts---All Voltages
308(1)
Grounding---All Voltages
308(1)
Tables
309(3)
Air-Conditioning and Refrigerating Equipment
312(7)
General
312(2)
Disconnecting Means
314(1)
Branch-Circuit Short-Circuit and Ground-Fault Protection
315(1)
Branch-Circuit Conductors
316(1)
Controllers for Motor-Compressors
316(1)
Motor-Compressor and Branch-Circuit Overload Protection
317(1)
Provisions for Room Air Conditioners
318(1)
Generators
319(1)
Transformers and Transformer Vaults (Including Secondary Ties)
320(7)
General Provisions
320(4)
Specific Provisions Applicable to Different Types of Transformers
324(2)
Transformer Vaults
326(1)
Phase Converters
327(2)
General
327(1)
Specific Provisions Applicable to Different Types of Phase Converters
328(1)
Capacitors
329(1)
600 Volts, Nominal, and Under
329(1)
Over 600 Volts, Nominal
329(1)
Resistors and Reactors (For Rheostats, See 430.82.)
330(1)
600 Volts, Nominal, and Under
330(1)
Over 600 Volts, Nominal
331(1)
Storage Batteries
331(1)
Equipment, Over 600 Volts, Nominal
332(7)
General
332(1)
Equipment---Specific Provisions
332(3)
Equipment---Metal-Enclosed Power Switchgear and Industrial Control Assemblies
335(2)
Mobile and Portable Equipment
337(1)
Electrode-Type Boilers
337(2)
Special Occupancies
Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2
339(8)
Class I Locations
347(9)
Class II Locations
356(6)
Class III Locations
362(2)
Intrinsically Safe Systems
364(3)
Class I, Zone 0, 1, and 2 Locations
367(13)
Hazardous (Classified) Locations---Specific
380(1)
Commercial Garages, Repair and Storage
380(2)
Aircraft Hangars
382(3)
Motor Fuel Dispensing Facilities
385(4)
Bulk Storage Plants
389(4)
Spray Application, Dipping, and Coating Processes
393(6)
Health Care Facilities
399(18)
General
399(3)
Wiring and Protection
402(3)
Essential Electrical System
405(6)
Inhalation Anesthetizing Locations
411(3)
X-Ray Installations
414(1)
Communications, Signaling Systems, Data Systems, Fire Alarm Systems, and Systems Less Than 120 Volts, Nominal
415(1)
Isolated Power Systems
416(1)
Places of Assembly
417(1)
Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations
418(9)
General
418(1)
Fixed Stage Switchboards
419(2)
Fixed Stage Equipment Other Than Switchboards
421(1)
Portable Switchboards on Stage
422(3)
Portable Stage Equipment Other Than Switchboards
425(1)
Dressing Rooms
426(1)
Grounding
426(1)
Carnivals, Circuses, Fairs, and Similar Events
427(2)
General Requirements
427(1)
Power Sources
427(1)
Wiring Methods
427(1)
Grounding and Bonding
428(1)
Temporary Installations
429(1)
Motion Picture and Television Studios and Similar Locations
430(4)
General
430(1)
Stage or Set
431(2)
Dressing Rooms
433(1)
Viewing, Cutting, and Patching Tables
434(1)
Cellulose Nitrate Film Storage Vaults
434(1)
Substations
434(1)
Motion Picture Projection Rooms
434(2)
General
434(1)
Equipment and Projectors of the Professional Type
434(1)
Nonprofessional Projectors
435(1)
Audio Signal Processing, Amplification, and Reproduction Equipment
435(1)
Manufactured Buildings
436(1)
Agricultural Buildings
437(2)
Mobile Homes, Manufactured Homes, and Mobile Home Parks
439(10)
General
439(1)
Mobile and Manufactured Homes
440(7)
Services and Feeders
447(2)
Recreational Vehicles and Recreational Vehicle Parks
449(14)
General
449(1)
Low-Voltage Systems
450(2)
Combination Electrical Systems
452(1)
Other Power Sources
452(1)
Nominal 120- Volt or 120/240-Volt Systems
453(7)
Factory Tests
460(1)
Recreational Vehicle Parks
460(3)
Park Trailers
463(9)
General
463(1)
Low-Voltage Systems
463(1)
Combination Electrical Systems
464(1)
Nominal 120- Volt or 120/240- Volt Systems
465(7)
Factory Tests
472(1)
Floating Buildings
472(1)
General
472(1)
Services and Feeders
472(1)
Grounding
472(1)
Marinas and Boatyards
473(4)
Special Equipment
Electric Signs and Outline Lighting
477(4)
General
477(3)
Field-Installed Skeleton Tubing
480(1)
Manufactured Wiring Systems
481(1)
Office Furnishings (Consisting of Lighting Accessories and Wired Partitions)
482(1)
Cranes and Hoists
483(5)
General
483(1)
Wiring
483(3)
Contact Conductors
486(1)
Disconnecting Means
487(1)
Overcurrent Protection
487(1)
Control
488(1)
Grounding
488(1)
Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Lifts
488(10)
General
488(2)
Conductors
490(1)
Wiring
491(3)
Installation of Conductors
494(1)
Traveling Cables
494(1)
Disconnecting Means and Control
495(1)
Overcurrent Protection
496(1)
Machine Rooms, Control Rooms, Machinery Spaces, and Control Spaces
497(1)
Grounding
497(1)
Emergency and Standby Power Systems
497(1)
Electric Vehicle Charging System
498(4)
General
498(1)
Wiring Methods
498(1)
Equipment Construction
499(1)
Control and Protection
499(1)
Electric Vehicle Supply Equipment Locations
500(2)
Electric Welders
502(2)
General
502(1)
Arc Welders
502(1)
Resistance Welders
503(1)
Welding Cable
504(1)
Audio Signal Processing, Amplification, and Reproduction Equipment
504(5)
General
504(3)
Permanent Audio System Installations
507(1)
Portable and Temporary Audio System Installations
508(1)
Information Technology Equipment
509(2)
Sensitive Electronic Equipment
511(1)
Pipe Organs
512(1)
X-Ray Equipment
513(2)
General
513(1)
Control
514(1)
Transformers and Capacitors
514(1)
Guarding and Grounding
514(1)
Induction and Dielectric Heating Equipment
515(1)
General
515(1)
Guarding, Grounding, and Labeling
516(1)
Electrolytic Cells
516(3)
Electroplating
519(1)
Industrial Machinery
520(1)
Electrically Driven or Controlled Irrigation Machines
521(2)
General
521(2)
Center Pivot Irrigation Machines
523(1)
Swimming Pools, Fountains, and Similar Installations
523(14)
General
523(3)
Permanently Installed Pools
526(6)
Storable Pools
532(1)
Spas and Hot Tubs
533(2)
Fountains
535(1)
Pools and Tubs for Therapeutic Use
536(1)
Hydromassage Bathtubs
537(1)
Integrated Electrical Systems
537(1)
General
537(1)
Orderly Shutdown
538(1)
Solar Photovoltaic Systems
538(9)
General
538(2)
Circuit Requirements
540(2)
Disconnecting Means
542(1)
Wiring Methods
543(1)
Grounding
544(1)
Marking
545(1)
Connection to Other Sources
545(1)
Storage Batteries
546(1)
Systems Over 600 Volts
547(1)
Fuel Cell Systems
547(3)
General
547(1)
Circuit Requirements
548(1)
Disconnecting Means
549(1)
Wiring Methods
549(1)
Grounding
549(1)
Marking
549(1)
Connection to Other Circuits
549(1)
Outputs Over 600 Volts
550(1)
Fire Pumps
550(5)
Special Conditions
Emergency Systems
555(4)
General
555(1)
Circuit Wiring
556(1)
Sources of Power
557(1)
Emergency System Circuits for Lighting and Power
558(1)
Control---Emergency Lighting Circuits
559(1)
Overcurrent Protection
559(1)
Legally Required Standby Systems
559(3)
General
559(1)
Circuit Wiring
560(1)
Sources of Power
561(1)
Overcurrent Protection
562(1)
Optional Standby Systems
562(1)
General
562(1)
Circuit Wiring
563(1)
Grounding
563(1)
Interconnected Electric Power Production Sources
563(2)
Circuits and Equipment Operating at Less Than 50 Volts
565(1)
Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits
565(9)
General
565(1)
Class 1 Circuits
566(2)
Class 2 and Class 3 Circuits
568(6)
Instrumentation Tray Cable: Type ITC
574(1)
Fire Alarm Systems
575(8)
Non--Power-Limited Fire Alarm (NPLFA) Circuits
576(3)
Power-Limited Fire Alarm (PLFA) Circuits
579(4)
Optical Fiber Cables and Raceways
583(1)
General
583(6)
Protection
584(1)
Cables Within Buildings
584(3)
Closed-Loop and Programmed Power Distribution
587(2)
Communications Systems
Communications Circuits
589(8)
General
589(1)
Conductors Outside and Entering Buildings
590(1)
Protection
591(1)
Grounding Methods
592(1)
Communications Wires and Cables Within Buildings
593(4)
Radio and Television Equipment
597(4)
General
597(1)
Receiving Equipment---Antenna Systems
598(2)
Amateur Transmitting and Receiving Stations---Antenna Systems
600(1)
Interior Installation---Transmitting Stations
601(1)
Community Antenna Television and Radio Distribution Systems
601(6)
General
601(1)
Cables Outside and Entering Buildings
602(1)
Protection
603(1)
Grounding Methods
603(1)
Cables Within Buildings
604(3)
Network-Powered Broadband Communications Systems
607(10)
General
607(2)
Cables Outside and Entering Buildings
609(3)
Protection
612(1)
Grounding Methods
613(1)
Wiring Methods Within Buildings
614(3)
Tables
Percent of Cross Section of Conduit and Tubing for Conductors
617(1)
Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9)
617(5)
Dimensions of Insulated Conductors and Fixture Wires
622(2)
Compact Aluminum Building Wire Nominal Dimensions and Areas
624(1)
Conductor Properties
625(1)
Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F)---Three Single Conductors in Conduit
626(2)
Class 2 and Class 3 Alternating-Current Power Source Limitations
628(1)
Class 2 and Class 3 Direct-Current Power Source Limitations
628(1)
PLFA Alternating-Current Power Source Limitations
629(1)
PLFA Direct-Current Power Source Limitations
629(52)
Annex A
631(4)
Annex B
635(10)
Annex C
645(22)
Annex D
667(8)
Annex E
675(2)
Annex F
677(4)
Index681

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