Transcript
NEC® Practice Questions – 2002 Edition
Contents Article 90 Introduction ..................................................................................................................................................................1
Chapter 1 General .............................................................................................................................................................................2 Article 100 Definitions ..................................................................................................................................................................2 Article 110 Requirements for Electrical Installations ..................................................................................................................8 Article 110 Requirements for Electrical Installations ................................................................................................................10
Chapter 2 Wiring and Protection ....................................................................................................................................13 Article 200 Use and Identification of Grounded Conductors ....................................................................................................13 Article 210 Branch Circuits.........................................................................................................................................................14 Article 215 Feeders......................................................................................................................................................................19 Article 220 Branch-Circuit, Feeder and Service Calculations...................................................................................................19 Article 225 Outside Branch Circuits and Feeders ......................................................................................................................22 Article 230 Services ....................................................................................................................................................................23 Article 240 Overcurrent Protection.............................................................................................................................................28 Article 250 Grounding.................................................................................................................................................................32 Article 280 Surge Arresters .........................................................................................................................................................41 Article 285 Transient Voltage Surge Suppressors: TVSSs.........................................................................................................42
Chapter 3 Wiring Methods and Materials ...................................................................................................................................42 Article 300 Wiring Methods........................................................................................................................................................42 Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures...........................................................................................49 Article 314 Outlet, Device, Pull and Junction Boxes, Conduit Bodies, Fittings and Manholes ..............................................49 Article 320 Armored Cable: Type AC.........................................................................................................................................52 Article 322 Flat Cable Assemblies: Type FC .............................................................................................................................53 Article 324 Flat Conductor Cable: Type FCC............................................................................................................................53 Article 326 Integrated Gas Spacer Cable: Type IGS..................................................................................................................54 Article 328 Medium Voltage Cable: Type MV...........................................................................................................................54 Article 330 Metal-Clad Cable: Type MC ...................................................................................................................................55 Article 332 Mineral-Insulated, Metal-Sheathed Cable: Type MI ..............................................................................................55 Article 334 Nonmetallic-Sheathed Cable: Types NM, NMC and NMS ...................................................................................56 Article 336 Power and Control Tray Cable: Type TC................................................................................................................57 Article 338 Service-Entrance Cable: Types SE and USE ..........................................................................................................57 Article 340 Underground Feeder and Branch-Circuit Cable: Type UF.....................................................................................57 Article 342 Intermediate Metal Conduit: Type IMC..................................................................................................................58 Article 344 Rigid Metal Conduit: Type RMC............................................................................................................................58 Article 348 Flexible Metal Conduit: Type FMC ........................................................................................................................59 Article 350 Liquidtight Flexible Metal Conduit: Type LFMC ..................................................................................................60 Article 352 Rigid Nonmetallic Conduit: Type RNC ..................................................................................................................60 Article 354 Nonmetallic Underground Conduit with Conductors: Type NUCC ......................................................................61 Article 354 Nonmetallic Underground Conduit with Conductors: Type NUCC ......................................................................61 Article 356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC ........................................................................................61 Article 358 Electrical Metallic Tubing: Type EMT ...................................................................................................................62
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NEC® Practice Questions – 2002 Edition
Article 360 Flexible Metallic Tubing: Type FMT ......................................................................................................................62 Article 362 Electrical Nonmetallic Tubing: Type ENT..............................................................................................................62 Article 366 Auxiliary Gutters......................................................................................................................................................63 Article 368 Busways....................................................................................................................................................................64 Article 370 Cablebus ...................................................................................................................................................................64 Article 372 Cellular Concrete Floor Raceways..........................................................................................................................65 Article 374 Cellular Metal Floor Raceways ...............................................................................................................................65 Article 376 Metal Wireways........................................................................................................................................................66 Article 382 Nonmetallic Extensions ...........................................................................................................................................66 Article 386 Surface Metal Raceways..........................................................................................................................................66 Article 388 Surface Nonmetallic Raceways ...............................................................................................................................67 Article 390 Underfloor Raceways...............................................................................................................................................67 Article 392 Cable Trays...............................................................................................................................................................68 Article 394 Concealed Knob-and-Tube Wiring..........................................................................................................................69 Article 396 Messenger-Supported Wiring ..................................................................................................................................70 Article 398 Open Wiring on Insulators.......................................................................................................................................70
Chapter 4 Equipment for General Use ............................................................................................................................71 Article 400 Flexible Cords and Cables .......................................................................................................................................71 Article 402 Fixture Wires ............................................................................................................................................................72 Article 404 Switches....................................................................................................................................................................72 Article 406 Receptacles, Cord Connectors, and Attachment Plugs (Caps)...............................................................................74 Article 408 Switchboards and Panelboards ................................................................................................................................75 Article 410 Luminaires (Lighting Fixtures), Lampholders and Lamps.....................................................................................76 Article 422 Appliances ................................................................................................................................................................80 Article 424 Fixed Electric Space-Heating Equipment ...............................................................................................................81 Article 426 Fixed Outdoor Electric Deicing and Snow-Melting Equipment ............................................................................82 Article 427 Fixed Electric Heating Equipment for Pipelines and Vessels.................................................................................83 Article 430 Motors, Motor Circuits and Controllers..................................................................................................................83 Article 440 Air-Conditioning and Refrigerating Equipment......................................................................................................87 Article 445 Generators ................................................................................................................................................................87 Article 450 Transformers and Transformer Vaults (Including Secondary Ties)........................................................................88 Article 455 Phase Converters ......................................................................................................................................................89 Article 460 Capacitors.................................................................................................................................................................89 Article 470 Resistors and Reactors .............................................................................................................................................89 Article 480 Storage Batteries ......................................................................................................................................................90
Chapter 5 Special Occupancies......................................................................................................................................90 Article 500 Hazardous (Classified) Locations, Classes I, II and III, Divisions 1 and 2 ...........................................................90 Article 501 Class I Locations......................................................................................................................................................92 Article 502 Class II Locations ....................................................................................................................................................94 Article 503 Class III Locations ...................................................................................................................................................94 Article 505 Class I, Zone 0, 1, and 2 Locations.........................................................................................................................95 Article 511 Commercial Garages, Repair and Storage ..............................................................................................................95 Article 513 Aircraft Hangars .......................................................................................................................................................96 Article 514 Motor Fuel Dispensing Facilities ............................................................................................................................96 Article 515 Bulk Storage Plants..................................................................................................................................................97 Article 516 Spray Application, Dipping, and Coating Processes ..............................................................................................97 Article 517 Health Care Facilities...............................................................................................................................................97 Article 518 Places of Assembly ..................................................................................................................................................99 Article 520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations.............................................................................99 Mike Holt Enterprises, Inc. • www.NECcode.com • 1.888.NEC.CODE
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NEC® Practice Questions – 2002 Edition
Article 525 Carnivals, Circuses, Fairs and Similar Events ......................................................................................................100 Article 527 Temporary Installations..........................................................................................................................................100 Article 530 Motion Picture and Television Studios and Similar Locations ............................................................................101 Article 540 Motion Picture Projection Rooms .........................................................................................................................102 Article 545 Manufactured Buildings ........................................................................................................................................102 Article 547 Agricultural Buildings............................................................................................................................................102 Article 550 Mobile Homes, Manufactured Homes and Mobile Home Parks .........................................................................103 Article 551 Recreational Vehicles and Recreational Vehicle Parks .........................................................................................104 Article 553 Floating Buildings..................................................................................................................................................104 Article 555 Marinas and Boatyards ..........................................................................................................................................105
Chapter 6 Special Equipment .......................................................................................................................................105 Article 600 Electric Signs and Outline Lighting ......................................................................................................................105 Article 604 Manufactured Wiring Systems ..............................................................................................................................106 Article 610 Cranes and Hoists ..................................................................................................................................................107 Article 620 Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Lifts ....................107 Article 625 Electric Vehicle Charging System .........................................................................................................................107 Article 630 Electric Welders .....................................................................................................................................................108 Article 640 Audio Signal Processing, Amplification, and Reproduction Equipment .............................................................108 Article 645 Information Technology Equipment......................................................................................................................108 Article 647 Sensitive Electronic Equipment.............................................................................................................................109 Article 650 Pipe Organs ............................................................................................................................................................109 Article 660 X-Ray Equipment ..................................................................................................................................................109 Article 668 Electrolytic Cells....................................................................................................................................................109 Article 670 Industrial Machinery..............................................................................................................................................110 Article 675 Electrically Driven or Controlled Irrigation Machines.........................................................................................110 Article 680 Swimming Pools, Fountains and Similar Installations .........................................................................................110 Article 690 Solar Photovoltaic Systems ...................................................................................................................................114 Article 692 Fuel Cell Systems ..................................................................................................................................................114 Article 695 Fire Pumps .............................................................................................................................................................114
Chapter 7 Special Conditions .......................................................................................................................................115 Article 700 Emergency Systems ...............................................................................................................................................115 Article 701 Legally Required Standby Systems.......................................................................................................................116 Article 702 Optional Standby Systems.....................................................................................................................................116 Article 720 Circuits and Equipment Operating at Less Than 50 Volts....................................................................................117 Article 725 Class 1, Class 2, and Class 3 Remote-Control, Signaling and Power-Limited Circuits .....................................117 Article 760 Fire Alarm Systems................................................................................................................................................118 Article 770 Optical Fiber Cables and Raceways......................................................................................................................120
Chapter 8 Communications Systems ...........................................................................................................................120 Article 800 Communications Circuits ......................................................................................................................................120 Article 810 Radio and Television Equipment...........................................................................................................................121 Article 820 Community Antenna Television and Radio Distribution Systems .......................................................................122 Article 830 Network-Powered Broadband Communications Systems....................................................................................123
Chapter 9 Tables...........................................................................................................................................................123 Annex C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size ............................................124
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