NFPA 70 1999
$80.71
NFPA 70: National Electrical Code (NEC)
| Published By | Publication Date | Number of Pages |
| NFPA | 1999 | 648 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | CONTENTS |
| 10 | NATIONAL ELECTRIC CODE COMMITTEE |
| 20 | NFPA 70 Article 90 – Introduction 90-1.Purpose. 90-2.Scope. 90-3.Code Arrangement. |
| 21 | 90-4.Enforcement. 90-5.Mandatory Rules, Permissive Rules, and ExplanaÃtory Material. 90-6.Formal Interpretations. 90-7.Examination of Equipment for Safety. 90-8.Wiring Planning. 90-9.Metric Units of Measurement. |
| 22 | CHAPTER 1 General Article 100 – Definitions A.General |
| 28 | B.Over 600 Volts, Nominal |
| 29 | Article 110 – Requirements for Electrical Installations A.General 110-2.Approval. 110-3.Examination, Identification, Installation, and Use of Equipment. 110-4.Voltages. 110-5.Conductors. 110-6.Conductor Sizes. 110-7.Insulation Integrity. 110-8.Wiring Methods. |
| 30 | 110-9.Interrupting Rating. 110-10.Circuit Impedance and Other Characteristics.Ã 110-11.Deteriorating Agents. 110-12.Mechanical Execution of Work. 110-13.Mounting and Cooling of Equipment. 110-14.Electrical Connections. |
| 31 | 110-18.Arcing Parts. 110-19.Light and Power from Railway Conductors. 110-21.Marking. 110-22.Identification of Disconnecting Means. B.600 Volts, Nominal, or Less 110-26.Spaces About Electrical Equipment. |
| 33 | 110-27.Guarding of Live Parts. C.Over 600 Volts, Nominal 110-30.General. 110-31.Enclosure for Electrical Installations. |
| 34 | 110-32.Work Space About Equipment. 110-33.Entrance and Access to Work Space. 110-34.Work Space and Guarding. |
| 35 | 110-36.Circuit Conductors. 110-40.Temperature Limitations at Terminations. D.Tunnel Installations Over 600 Volts, Nominal 110-51.General. |
| 36 | 110-52.Overcurrent Protection. 110-53.Conductors. 110-54.Bonding and Equipment Grounding ConducÃtors. 110-56.Energized Parts. 110-57.Ventilation System Controls. 110-58.Disconnecting Means. 110-59.Enclosures. |
| 37 | CHAPTER 2 Wiring and Protection Article 200 – Use and Identification of Grounded Conductors 200-1.Scope. 200-2.General. 200-3.Connection to Grounded System. 200-6.Means of Identifying Grounded Conductors. |
| 38 | 200-7.Use of Insulation of a White or Natural Gray Color or with Three Continuou 200-9.Means of Identification of Terminals. 200-10.Identification of Terminals. |
| 39 | 200-11.Polarity of Connections. Article 210 – Branch Circuits A.General Provisions 210-1.Scope. 210-2.Other Articles for Specific-Purpose Branch CirÃcuits. 210-3.Rating. 210-4.Multiwire Branch Circuits. |
| 40 | 210-5.Identification for Branch Circuits. 210-6.Branch-Circuit Voltage Limitations. 210-7.Receptacles and Cord Connectors. |
| 41 | 210-8.Ground-Fault Circuit-Interrupter Protection for Personnel. |
| 42 | 210-9.Circuits Derived from Autotransformers. 210-10.Ungrounded Conductors Tapped from Grounded Systems. 210-11.Branch Circuits Required. |
| 43 | 210-12.Arc-Fault Circuit-Interrupter Protection. B.Branch-Circuit Ratings 210-19.Conductors – Minimum Ampacity and Size. |
| 44 | 210-20.Overcurrent Protection. 210-21.Outlet Devices. |
| 45 | 210-23.Permissible Loads. 210-24.Branch Circuit Requirements – Summary. 210-25.Common Area Branch Circuits. C.Required Outlets 210-50.General. |
| 46 | 210-52.Dwelling Unit Receptacle Outlets. |
| 47 | 210-60.Guest Rooms. 210-62.Show Windows. 210-63.Heating, Air-Conditioning, and Refrigeration Equipment Outlet. 210-70.Lighting Outlets Required. |
| 48 | Article 215 – Feeders 215-1.Scope. 215-2.Minimum Rating and Size. |
| 49 | 215-3.Overcurrent Protection. 215-4.Feeders with Common Neutral. 215-5.Diagrams of Feeders. 215-6.Feeder Conductor Grounding Means. 215-7.Ungrounded Conductors Tapped from Grounded Systems. 215-8.Means of Identifying Conductor with the Higher Voltage to Ground. 215-9.Ground-Fault Circuit-Interrupter Protection for Personnel. 215-10.Ground-Fault Protection of Equipment. 215-11.Circuits Derived from Autotransformers. |
| 50 | Article 220 – Branch-Circuit, Feeder, and Service Calculations A.General 220-1.Scope. 220-2.Computations. 220-3.Computation of Branch Circuit Loads. |
| 51 | 220-4.Maximum Loads. B.Feeders and Services 220-10.General. 220-11.General Lighting. 220-12.Show-Window and Track Lighting. |
| 52 | 220-13.Receptacle Loads µ Nondwelling Units. 220-13.Receptacle Loads µ Nondwelling Units. 220-14.Motors. 220-15.Fixed Electric Space Heating. 220-16.Small Appliance and Laundry Loads µ DwellÍing Unit. 220-17.Appliance Load µ Dwelling Unit(s). 220-18.Electric Clothes Dryers µ Dwelling Unit(s). 220-19.Electric Ranges and Other Cooking Appli-Ïances µ Dwelling Unit(s). |
| 54 | 220-20.Kitchen Equipment µ Other Than Dwelling Unit(s). 220-20.Kitchen Equipment µ Other Than Dwelling Unit(s). 220-21.Noncoincident Loads. 220-22.Feeder or Service Neutral Load. C.Optional Calculations for Computing Feeder and Service Loads 220-30.Optional Calculation µ Dwelling Unit. |
| 55 | 220-31.Optional Calculation for Additional Loads in Existing Dwelling Unit. 220-32.Optional Calculation µ Multifamily Dwelling. |
| 56 | 220-33.Optional Calculation µ Two Dwelling Units.Ï 220-34.Optional Method µ Schools. 220-35.Optional Calculations for Determining Existing Loads. 220-36.Optional Calculation µ New Restaurants. |
| 57 | D.Method for Computing Farm Loads 220-40.Farm Loads µ Buildings and Other Loads. 220-41.Farm Loads µ Total. Article 225 – Outside Branch Circuits and Feeders 225-1.Scope. 225-2.Other Articles. |
| 58 | A.General 225-3.Calculation of Load. 225-4.Conductor Covering. 225-5.Size of Conductors. 225-6.Conductor Size and Support. 225-7.Lighting Equipment Installed Outdoors. 225-9.Overcurrent Protection. |
| 59 | 225-10.Wiring on Buildings. 225-11.Circuit Exits and Entrances. 225-12.Open-Conductor Supports. 225-14.Open-Conductor Spacings. 225-15.Supports Over Buildings. 225-16.Point of Attachment to Buildings. 225-17.Means of Attachment to Buildings. 225-18.Clearance from Ground. 225-19.Clearances from Buildings for Conductors of Not Over 600 Volts, Nominal. |
| 60 | 225-20.Mechanical Protection of Conductors. 225-21.Multiconductor Cables on Exterior Surfaces of Buildings. 225-22.Raceways on Exterior Surfaces of Buildings. 225-24.Outdoor Lampholders. 225-25.Location of Outdoor Lamps. 225-26.Vegetation. B.More than One Building or Other Structure 225-30.Number of Supplies. |
| 61 | 225-31.Disconnecting Means. 225-32.Location. 225-33.Maximum Number of Disconnects. 225-34.Grouping of Disconnects. 225-35.Access to Occupants. 225-36.Suitable for Service Equipment. 225-37.Identification. |
| 62 | 225-38.Disconnect Construction. 225-39.Rating of Disconnect. 225-40.Access to Overcurrent Protective Devices. C.Over 600 Volts 225-50.Warning Signs. 225-51.Isolating Switches. 225-52.Location. 225-53.Type. |
| 63 | Article 230 – Services 230-1.Scope. A.General 230-2.Number of Services. 230-3.One Building or Other Structure Not to Be Supplied Through Another. 230-6.Other Conductors Considered Outside the Building. |
| 64 | 230-7.Other Conductors in Raceway or Cable. 230-8.Raceway Seal. 230-9.Clearance from Building Openings. B.Overhead Service-Drop Conductors 230-21.Overhead Supply. 230-22.Insulation or Covering. 230-23.Size and Rating. 230-24.Clearances. |
| 65 | 230-26.Point of Attachment. 230-27.Means of Attachment. 230-28.Service Masts as Supports. 230-29.Supports Over Buildings. C.Underground Service-Lateral Conductors 230-30.Insulation. 230-31.Size and Rating. 230-32.Protection Against Damage. |
| 66 | D.Service-Entrance Conductors 230-40.Number of Service-Entrance Conductor Sets. 230-41.Insulation of Service-Entrance Conductors. 230-42.Minimum Size and Rating. 230-43.Wiring Methods for 600 Volts, Nominal, or Less. 230-46.Spliced Conductors. |
| 67 | 230-49.Protection Against Physical Damage – Underground. 230-50.Protection of Open Conductors and Cables Against Damage – Above Ground. 230-51.Mounting Supports. 230-52.Individual Conductors Entering Buildings or Other Structures. 230-53.Raceways to Drain. 230-54.Overhead Service Locations. |
| 68 | 230-56.Service Conductor with the Higher Voltage to Ground. E.Service Equipment – General 230-62.Service Equipment – Enclosed or Guarded. 230-66.Marking. F.Service Equipment – Disconnecting Means 230-70.General. 230-71.Maximum Number of Disconnects. 230-72.Grouping of Disconnects. |
| 69 | 230-74.Simultaneous Opening of Poles. 230-75.Disconnection of Grounded Conductor. 230-76.Manually or Power Operable. 230-77.Indicating. 230-79.Rating of Service Disconnecting Means. 230-80.Combined Rating of Disconnects. 230-81.Connection to Terminals. 230-82.Equipment Connected to the Supply Side of Service Disconnect. |
| 70 | G.Service Equipment – Overcurrent Protection 230-90.Where Required. 230-91.Location. 230-92.Locked Service Overcurrent Devices. 230-93.Protection of Specific Circuits. 230-94.Relative Location of Overcurrent Device and Other Service Equipment. 230-95.Ground-Fault Protection of Equipment. |
| 71 | H.Services Exceeding 600 Volts, Nominal 230-200.General. 230-202.Service-Entrance Conductors. 230-203.Warning Signs. 230-204.Isolating Switches. 230-205.Disconnecting Means. |
| 72 | 230-206.Overcurrent Devices as Disconnecting Means. 230-208.Protection Requirements. 230-209.Surge Arresters (Lightning Arresters). 230-210.Service Equipment – General Provisions. 230-211.Metal-Enclosed Switchgear. 230-212.Services Over 15,000 Volts. Article 240 – Overcurrent Protection 240-1.Scope. A.General 240-2.Protection of Equipment. |
| 73 | 240-3.Protection of Conductors. |
| 74 | 240-4.Protection of Flexible Cords and Fixture Wires.Ã 240-6.Standard Ampere Ratings. 240-8.Fuses or Circuit Breakers in Parallel. |
| 75 | 240-9.Thermal Devices. 240-10.Supplementary Overcurrent Protection. 240-11.Definition of Current-Limiting Overcurrent Protective Device. 240-12.Electrical System Coordination. 240-13.Ground-Fault Protection of Equipment.Ã B.Location 240-20.Ungrounded Conductors. 240-21.Location in Circuit. |
| 78 | 240-22.Grounded Conductor. 240-23.Change in Size of Grounded Conductor. 240-24.Location in or on Premises. C.Enclosures 240-30.General. 240-32.Damp or Wet Locations. 240-33.Vertical Position. D.Disconnecting and Guarding 240-40.Disconnecting Means for Fuses. 240-41.Arcing or Suddenly Moving Parts. |
| 79 | E.Plug Fuses, Fuseholders, and Adapters 240-50.General. 240-51.Edison-Base Fuses. 240-52.Edison-Base Fuseholders. 240-53.Type S Fuses. 240-54.Type S Fuses, Adapters, and Fuseholders. F.Cartridge Fuses and Fuseholders 240-60.General. |
| 80 | 240-61.Classification. G.Circuit Breakers 240-80.Method of Operation. 240-81.Indicating. 240-82.Nontamperable. 240-83.Marking. 240-85.Applications. 240-86.Series Ratings. H.Supervised Industrial Installations 240-90.General. 240-91.Definition of Supervised Industrial InstallaÃtion. |
| 81 | 240-92.Location in Circuit. |
| 82 | I.Overcurrent Protection Over 600 Volts, Nominal 240-100.Feeders and Branch Circuits. 240-101.Additional Requirements for Feeders. Article 250 – Grounding A.General 250-1.Scope. 250-2.General Requirements for Grounding and BondÃing. |
| 83 | 250-4.Application of Other Articles. |
| 84 | 250-6.Objectionable Current Over Grounding ConÃductors. 250-8.Connection of Grounding and Bonding EquipÃment. 250-10.Protection of Ground Clamps and Fittings.Ã |
| 85 | 250-12.Clean Surfaces. B.Circuit and System Grounding 250-20.Alternating-Current Circuits and Systems to Be Grounded. 250-21.Alternating-Current Systems of 50 Volts to 1000 Volts Not Required to Be 250-22.Circuits Not to Be Grounded. 250-24.Grounding Service-Supplied Alternating-Current Systems. |
| 86 | 250-26.Conductor to Be Grounded – Alternating-Current Systems. |
| 87 | 250-28.Main Bonding Jumper. 250-30.Grounding Separately Derived Alternating-Current Systems. |
| 88 | 250-32.Two or More Buildings or Structures Supplied from a Common Service. |
| 89 | 250-34.Portable and Vehicle-Mounted Generators. 250-36.High-Impedence Grounded Neutral Systems. |
| 90 | C.Grounding Electrode System and Grounding Electrode Conductor 250-50.Grounding Electrode System. |
| 91 | 250-52.Made and Other Electrodes. 250-54.Supplementary Grounding Electrodes. 250-56.Resistance of Made Electrodes. 250-58.Common Grounding Electrode. 250-60.Use of Air Terminals. |
| 92 | 250-62.Grounding Electrode Conductor Material. 250-64.Grounding Electrode Conductor Installation. 250-66.Size of Alternating-Current Grounding Electrode Conductor. |
| 93 | 250-68.Grounding Electrode Conductor Connection to Grounding Electrodes. 250-70.Methods of Grounding Conductor Connection to Electrodes. D.Enclosure, Raceway, and Service Cable Grounding 250-80.Service Raceways and Enclosures. 250-84.Underground Service Cable or Conduit. 250-86.Other Conductor Enclosures and Raceways. |
| 94 | E.Bonding 250-90.General. 250-92.Services. 250-94.Method of Bonding at the Service. 250-96.Bonding Other Enclosures. |
| 95 | 250-97.Bonding for Over 250 Volts. 250-98.Bonding Loosely Jointed Metal Raceways. 250-100.Bonding in Hazardous (Classified) Locations. 250-102.Equipment Bonding Jumpers. 250-104.Bonding of Piping Systems and Exposed Structural Steel. |
| 96 | 250-106.Lightning Protection Systems. F.Equipment Grounding and Equipment Grounding Conductors 250-110.Equipment Fastened in Place or Connected by Permanent Wiring Methods |
| 97 | 250-112.Fastened in Place or Connected by Permanent Wiring Methods (Fixed) – 250-114.Equipment Connected by Cord and Plug. |
| 98 | 250-116.Nonelectric Equipment. 250-118.Types of Equipment Grounding Conductors. 250-119.Identification of Equipment Grounding Conductors. |
| 99 | 250-120.Equipment Grounding Conductor Installation. 250-122.Size of Equipment Grounding Conductors. |
| 100 | 250-124.Equipment Grounding Conductor Continuity. 250-126.Identification of Wiring Device Terminals. G.Methods of Equipment Grounding 250-130.Equipment Grounding Conductor Connections. |
| 101 | 250-132.Short Sections of Raceway. 250-134.Equipment Fastened in Place or Connected by Permanent Wiring Methods 250-136.Equipment Considered Effectively Grounded. 250-138.Cord- and Plug-Connected Equipment. 250-140.Frames of Ranges and Clothes Dryers. 250-142.Use of Grounded Circuit Conductor for Grounding Equipment. |
| 102 | 250-144.Multiple Circuit Connections. 250-146.Connecting Receptacle Grounding Terminal to Box. 250-148.Continuity and Attachment of Equipment Grounding Conductors to Boxes. H.Direct-Current Systems 250-160.General. |
| 103 | 250-162.Direct-Current Circuits and Systems to Be Grounded. 250-164.Point of Connection for Direct-Current Systems. 250-166.Size of Direct-Current Grounding Electrode Conductor. 250-168.Direct-Current Bonding Jumper. 250-169.Ungrounded Direct-Current Separately Derived Systems. J.Instruments, Meters, and Relays 250-170.Instrument Transformer Circuits. |
| 104 | 250-172.Instrument Transformer Cases. 250-174.Cases of Instruments, Meters, and Relays OpÃerating at Less than 1000 Vo 250-176.Cases of Instruments, Meters, and Relays – Operating Voltage 1 kV and Ov 250-178.Instrument Grounding Conductor. K.Grounding of Systems and Circuits of 1 kV and Over (High Voltage) 250-180.General. 250-182.Derived Neutral Systems. 250-184.Solidly Grounded Neutral Systems. 250-186.Impedance Grounded Neutral Systems. |
| 105 | 250-188.Grounding of Systems Supplying Portable or Mobile Equipment. 250-190.Grounding of Equipment. Article 280 – Surge Arresters A.General 280-1.Scope. 280-2.Definition. 280-3.Number Required. 280-4.Surge Arrester Selection. |
| 106 | B.Installation 280-11.Location. 280-12.Routing of Surge Arrester Connections. C.Connecting Surge Arresters 280-21.Installed at Services of Less than 1000 Volts. 280-22.Installed on the Load Side Services of Less than 1000 Volts. 280-23.Circuits of 1 kV and Over – Surge-Arrester Conductors. 280-24.Circuits of 1 kV and Over µ Interconnections. 280-25.Grounding. |
| 107 | CHAPTER 3 Wiring Methods and Materials Article 300 – Wiring Methods A.General Requirements 300-1.Scope. 300-2.Limitations. 300-3.Conductors. |
| 108 | 300-4.Protection Against Physical Damage. |
| 109 | 300-5.Underground Installations. 300-6.Protection Against Corrosion. |
| 111 | 300-8.Installation of Conductors with Other SysÃtems. 300-8.Installation of Conductors with Other Systems. 300-10.Electrical Continuity of Metal Raceways and Enclosures. 300-11.Securing and Supporting. |
| 112 | 300-12.Mechanical Continuity – Raceways and Cables. 300-13.Mechanical and Electrical Continuity – Conductors. 300-14.Length of Free Conductors at Outlets, Junctions, and Switch Points. 300-15.Boxes, Conduit Bodies, or Fittings – Where Required. |
| 113 | 300-16.Raceway or Cable to Open or Concealed Wiring. 300-17.Number and Size of Conductors in Raceway. 300-18.Raceway Installations. 300-19.Supporting Conductors in Vertical Raceways. |
| 114 | 300-20.Induced Currents in Metal Enclosures or Metal Raceways. 300-21.Spread of Fire or Products of Combustion. 300-22.Wiring in Ducts, Plenums, and Other Air-Handling Spaces. |
| 115 | 300-23.Panels Designed to Allow Access. B.Requirements for Over 600 Volts, Nominal 300-31.Covers Required. 300-32.Conductors of Different Systems. 300-34.Conductor Bending Radius. 300-35.Protection Against Induction Heating. 300-37.Aboveground Wiring Methods. 300-39.Braid-Covered Insulated Conductors – Open Installation. 300-40.Insulation Shielding. |
| 116 | 300-42.Moisture or Mechanical Protection for Metal-Sheathed Cables. 300-50.Underground Installations. |
| 117 | Article 305 – Temporary Wiring 305-1.Scope. 305-2.All Wiring Installations. 305-3.Time Constraints. 305-4.General. |
| 118 | 305-6.Ground-Fault Protection for Personnel. 305-7.Guarding. Article 310 – Conductors for General Wiring 310-1.Scope. |
| 119 | 310-2.Conductors. 310-3.Stranded Conductors. 310-4.Conductors in Parallel. 310-5.Minimum Size of Conductors. |
| 120 | 310-6.Shielding. 310-7.Direct Burial Conductors. 310-8.Locations. 310-9.Corrosive Conditions. 310-10.Temperature Limitation of Conductors. |
| 121 | 310-11.Marking. |
| 122 | 310-12.Conductor Identification. 310-13.Conductor Constructions and Applications. 310-14.Aluminum Conductor Material. |
| 125 | 310-15.Ampacities for Conductors Rated 0Å‚2000 Volts. |
| 127 | 310-60.Conductors Rated 2001 to 35,000 Volts. |
| 142 | Article 318 – Cable Trays 318-1.Scope. 318-2.Definition. 318-3.Uses Permitted. |
| 143 | 318-4.Uses Not Permitted. 318-5.Construction Specifications. 318-6.Installation. |
| 144 | 318-7.Grounding. 318-8.Cable Installation. |
| 145 | 318-9.Number of Multiconductor Cables, Rated 2000 Volts or Less, in Cable Trays. |
| 146 | 318-10.Number of Single Conductor Cables, Rated 2000 Volts or Less, in Cable Tra |
| 147 | 318-11.Ampacity of Cables, Rated 2000 Volts or Less, in Cable Trays. 318-12.Number of Type MV and Type MC Cables (2001 Volts or Over) in Cable Trays. 318-13.Ampacity of Type MV and Type MC Cables (2001 Volts or Over) in Cable Tray |
| 148 | Article 320 – Open Wiring on Insulators 320-1.Definition. 320-2.Other Articles. 320-3.Uses Permitted. 320-5.Conductors. 320-6.Conductor Supports. 320-7.Mounting of Conductor Supports. 320-8.Tie Wires. 320-10.Flexible Nonmetallic Tubing. |
| 149 | 320-11.Through Walls, Floors, Wood Cross Members, etc. 320-12.Clearance from Piping, Exposed Conductors, etc. 320-13.Entering Spaces Subject to Dampness, Wetness, or Corrosive Vapors. 320-14.Protection from Physical Damage. 320-15.Unfinished Attics and Roof Spaces. 320-16.Switches. Article 321 – Messenger Supported Wiring 321-1.Definition. |
| 150 | 321-2.Other Articles. 321-3.Uses Permitted. 321-4.Uses Not Permitted. 321-5.Ampacity. 321-6.Messenger Support. 321-7.Grounding. 321-8.Conductor Splices and Taps. Article 324 – Concealed Knob-and-Tube Wiring 324-1.Definition. 324-2.Other Articles. 324-3.Uses Permitted. 324-4.Uses Not Permitted. 324-5.Conductors. |
| 151 | 324-6.Conductor Supports. 324-7.Tie Wires. 324-8.Conductor Clearances. 324-9.Through Walls, Floors, Wood Cross Members, etc. 324-10.Clearance from Piping, Exposed Conductors, etc. 324-11.Unfinished Attics and Roof Spaces. 324-12.Splices. 324-13.Boxes. 324-14.Switches. Article 325 – Integrated Gas Spacer Cable: Type IGS A.General 325-1.Definition. 325-2.Other Articles. 325-3.Uses Permitted. 325-4.Uses Not Permitted. |
| 152 | B.Installation 325-11.Bending Radius. 325-12.Bends. 325-13.Fittings. 325-14.Ampacity. C.Construction Specifications 325-20.Conductors. 325-21.Insulation. 325-22.Conduit. 325-24.Marking. Article 326 – Medium Voltage Cable: Type MV 326-1.Definition. 326-2.Other Articles. 326-3.Uses Permitted. |
| 153 | 326-4.Uses Not Permitted. 326-5.Construction. 326-6.Ampacity. 326-7.Marking. Article 328 – Flat Conductor Cable: Type FCC A.General 328-1.Scope. 328-2.Definitions. 328-3.Other Articles. 328-4.Uses Permitted. 328-5.Uses Not Permitted. 328-6.Branch-Circuit Ratings. B.Installation 328-10.Coverings. |
| 154 | 328-11.Cable Connections and Insulating Ends. 328-12.Shields. 328-13.Enclosure and Shield Connections. 328-14.Receptacles. 328-15.Connection to Other Systems. 328-16.Anchoring. 328-17.Crossings. 328-18.System Height. 328-19.FCC Systems Alterations. 328-20.Polarization of Connections. C.Construction 328-30.Type FCC Cable. 328-31.Markings. 328-32.Conductor Identification. 328-33.Corrosion Resistance. 328-34.Insulation. 328-35.Shields. |
| 155 | 328-36.Receptacles and Housings. 328-37.Transition Assemblies. Article 330 – Mineral-Insulated, Metal-Sheathed Cable: Type MI A.General 330-1.Definition. 330-2.Other Articles. 330-3.Uses Permitted. 330-4.Uses Not Permitted. B.Installation 330-10.Wet Locations. 330-11.Through Joists, Studs, or Rafters. 330-12.Supports. 330-13.Bends. 330-14.Fittings. |
| 156 | 330-15.Terminal Seals. 330-16.Single Conductors. C.Construction Specifications 330-20.Conductors. 330-21.Insulation. 330-22.Outer Sheath. Article 331 – Electrical Nonmetallic Tubing A.General 331-1.Definition. 331-2.Other Articles. 331-3.Uses Permitted. 331-4.Uses Not Permitted. |
| 157 | B.Installation 331-5.Size. 331-6.Number of Conductors in Tubing. 331-7.Trimming. 331-8.Joints. 331-9.Bends – How Made. 331-10.Bends – Number in One Run. 331-11.Supports. 331-12.Boxes and Fittings. 331-13.Splices and Taps. 331-14.Bushings. C.Construction Specifications 331-15.General. Article 333 – Armored Cable: Type AC A.General 333-1.Definition. |
| 158 | 333-2.Other Articles. 333-3.Uses Permitted. 333-4.Uses Not Permitted. B.Installation 333-7.Support. 333-8.Bending Radius. 333-9.Boxes and Fittings. 333-10.Through or Parallel to Framing Members. 333-11.Exposed Work. 333-12.In Accessible Attics. |
| 159 | C.Construction Specifications 333-19.Construction. 333-20.Conductors. 333-21.Grounding. 333-22.Marking. Article 334 – Metal-Clad Cable: Type MC A.General 334-1.Definition. 334-2.Other Articles. 334-3.Uses Permitted. 334-4.Uses Not Permitted. B.Installation 334-10.Installation. |
| 160 | 334-11.Bending Radius. 334-12.Fittings. 334-13.Ampacity. C.Construction Specifications 334-20.Conductors. 334-21.Insulation. 334-22.Metallic Sheath. 334-23.Grounding. 334-24.Marking. |
| 161 | Article 336 – Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS 336-1.Scope. A.General 336-2.Definition. 336-3.Other Articles. 336-4.Uses Permitted. 336-5.Uses Not Permitted. B.Installation 336-6.Exposed Work µ General. |
| 162 | 336-9.Through or Parallel to Framing Members. 336-16.Bends. 336-18.Supports. 336-20.Boxes of Insulating Material. 336-21.Devices of Insulating Material. 336-25.Devices with Integral Enclosures. 336-26.Ampacity. C.Construction Specifications 336-30.General. |
| 163 | 336-31.Marking. Article 338 – Service-Entrance Cable: Types SE and USE 338-1.Definition. 338-2.Uses Permitted as Service-Entrance Conductors. 338-3.Uses Permitted as Branch Circuits or Feeders. 338-4.Installation Methods for Branch Circuits and Feeders. 338-5.Marking. 338-6.Bends. |
| 164 | Article 339 – Underground Feeder and Branch-Circuit Cable: Type UF 339-1.Description and Marking. 339-2.Other Articles. 339-3.Use. 339-4.Overcurrent Protection. 339-5.Ampacity. Article 340 – Power and Control Tray Cable: Type TC 340-1.Definition. 340-2.Other Articles. 340-3.Construction. |
| 165 | 340-4.Use Permitted. 340-5.Uses Not Permitted. 340-6.Marking. 340-7.Ampacity. 340-8.Bends. Article 342 – Nonmetallic Extensions 342-1.Definition. 342-2.Other Articles. 342-3.Uses Permitted. |
| 166 | 342-4.Uses Not Permitted. 342-5.Splices and Taps. 342-6.Fittings. 342-7.Installation. 342-8.Marking. Article 343 – Nonmetallic Underground Conduit with Conductors A.General 343-1.Description. 343-2.Other Articles. |
| 167 | 343-3.Uses Permitted. 343-4.Uses Not Permitted. B.Installation 343-5.Size. 343-6.Trimming. 343-7.Joints. 343-8.Conductor Terminations. 343-9.Bushings. 343-10.Bends – How Made. 343-11.Bends – Number in One Run. 343-12.Splices and Taps. C.Construction 343-13.General. 343-14.Conductors and Cables. |
| 168 | 343-15.Conductor Fill. 343-16.Marking. Article 345 – Intermediate Metal Conduit A.General 345-1.Definition. 345-2.Other Articles. 345-3.Uses Permitted. B.Installation 345-5.Wet Locations. 345-6.Size. 345-7.Number of Conductors in Conduit. 345-8.Reaming and Threading. 345-9.Couplings and Connectors. |
| 169 | 345-10.Bends – How Made. 345-11.Bends – Number in One Run. 345-12.Securing and Supporting. 345-13.Boxes and Fittings. 345-14.Splices and Taps. 345-15.Bushings. C.Construction Specifications 345-16.General. Article 346 – Rigid Metal Conduit A.General 346-1.Definition. 346-2.Other Articles. 346-3.Uses Permitted. |
| 170 | 346-5.Wet Locations. 346-5.Wet Locations. 346-6.Size. 346-7.Number of Conductors in Conduit. 346-8.Reaming and Threading. 346-9.Couplings and Connectors. 346-10.Bends – How Made. 346-11.Bends – Number in One Run. |
| 171 | 346-12.Securing and Supporting. 346-13.Boxes and Fittings. 346-14.Splices and Taps. 346-15.Bushings. C.Construction Specifications 346-16.General. Article 347 – Rigid Nonmetallic Conduit 347-1.Description. |
| 172 | 347-2.Uses Permitted. 347-3.Uses Not Permitted. 347-4.Other Articles. A.Installations 347-5.Trimming. 347-6.Joints. 347-8.Securing and Supporting. |
| 173 | 347-9.Expansion Fittings. 347-10.Size. 347-11.Number of Conductors. 347-12.Bushings. 347-13.Bends – How Made. |
| 174 | 347-14.Bends – Number in One Run. 347-15.Boxes and Fittings. 347-16.Splices and Taps. B.Construction Specifications 347-17.General. Article 348 – Electrical Metallic Tubing A.General 348-1.Definition. 348-2.Other Articles. 348-4.Uses Permitted. |
| 175 | 348-5.Uses Not Permitted. B.Installation 348-6.Wet Locations. 348-7.Size. 348-8.Number of Conductors in Tubing. 348-9.Reaming and Threading. 348-10.Couplings and Connectors. 348-11.Bends – How Made. 348-12.Bends – Number in One Run. 348-13.Supports. 348-14.Boxes and Fittings. |
| 176 | 348-15.Splices and Taps. C.Construction Specifications 348-16.General. Article 349 – Flexible Metallic Tubing A.General 349-1.Definition. 349-3.Other Articles. 349-4.Uses Permitted. 349-5.Uses Not Permitted. B.Construction and Installation 349-10.Size. 349-12.Number of Conductors. 349-16.Grounding. 349-17.Splices and Taps. 349-18.Fittings. 349-20.Bends. |
| 177 | Article 350 – Flexible Metal Conduit A.General 350-1.Scope. 350-2.Definition. 350-3.Other Articles. 350-4.Uses Permitted. 350-5.Uses Not Permitted. B.Installation 350-10.Size. 350-12.Number of Conductors. 350-14.Grounding. |
| 178 | 350-16.Bends. 350-18.Supports. 350-20.Fittings. 350-22.Trimming. 350-24.Splices and Taps. Article 351 – Liquidtight Flexible Metal Conduit and Liquidtight Flexible Nonme 351-1.Scope. A.Liquidtight Flexible Metal Conduit 351-2.Definition. 351-3.Other Articles. 351-4.Use. |
| 179 | 351-5.Size. 351-6.Number of Conductors. 351-7.Fittings. 351-8.Supports. 351-9.Grounding. 351-10.Bends – Number in One Run. 351-11.Splices and Taps. B.Liquidtight Flexible Nonmetallic Conduit 351-22.Definition. 351-23.Use. |
| 180 | 351-24.Size. 351-25.Number of Conductors. 351-26.Fittings. 351-27.Securing and Supporting. 351-28.Equipment Grounding. 351-29.Splices and Taps. 351-30.Bends – Number in One Run. Article 352 – Surface Metal Raceways and Surface Nonmetallic Raceways A.Surface Metal Raceways 352-1.Uses. |
| 181 | 352-2.Other Articles. 352-3.Size of Conductors. 352-4.Number of Conductors in Raceways. 352-5.Extension Through Walls and Floors. 352-6.Combination Raceways. 352-7.Splices and Taps. 352-8.General. 352-9.Grounding. B.Surface Nonmetallic Raceways 352-21.Description. 352-22.Use. 352-23.Other Articles. |
| 182 | 352-24.Size of Conductors. 352-25.Number of Conductors in Raceways. 352-26.Combination Raceways. 352-27.General. 352-28.Extension Through Walls and Floors. 352-29.Splices and Taps. C.Strut-Type Channel Raceway 352-40.Description. 352-41.Uses Permitted. 352-42.Uses Not Permitted. 352-43.Other Articles. 352-44.Size of Conductors. 352-45.Number of Conductors in Raceways. 352-46.Extensions Through Walls and Floors. |
| 183 | 352-47.Support of Strut-Type Channel Raceways. 352-48.Splices and Taps. 352-49.General. 352-50.Grounding. 352-51.Marking. Article 353 – Multioutlet Assembly 353-1.Other Articles. 353-2.Use. 353-3.Metal Multioutlet Assembly Through Dry Partitions. Article 354 – Underfloor Raceways 354-1.Other Articles. |
| 184 | 354-2.Use. 354-3.Covering. 354-4.Size of Conductors. 354-5.Maximum Number of Conductors in Raceway. 354-6.Splices and Taps. 354-7.Discontinued Outlets. 354-8.Laid in Straight Lines. 354-9.Markers at Ends. 354-10.Dead Ends. 354-13.Junction Boxes. 354-14.Inserts. |
| 185 | 354-15.Connections to Cabinets and Wall Outlets. Article 356 – Cellular Metal Floor Raceways 356-1.Definitions. 356-2.Uses Not Permitted. 356-3.Other Articles. A.Installation 356-4.Size of Conductors. 356-6.Splices and Taps. 356-6.Splices and Taps. 356-7.Discontinued Outlets. 356-8.Markers. 356-9.Junction Boxes. 356-10.Inserts. 356-11.Connection to Cabinets and Extensions from Cells. B.Construction Specifications 356-12.General. |
| 186 | Article 358 – Cellular Concrete Floor Raceways 358-1.Scope. 358-2.Definitions. 358-3.Other Articles. 358-4.Uses Not Permitted. 358-5.Header. 358-6.Connection to Cabinets and Other Enclosures 358-7.Junction Boxes. 358-8.Markers. 358-9.Inserts. 358-10.Size of Conductors. 358-11.Maximum Number of Conductors. 358-12.Splices and Taps. 358-13.Discontinued Outlets. Article 362 – Metal Wireways and Nonmetallic Wireways A.Metal Wireways 362-1.Definition. 362-2.Uses. |
| 187 | 362-3.Other Articles. 362-4.Size of Conductors. 362-5.Number of Conductors. 362-6.Deflected Insulated Conductors. 362-7.Splices and Taps. 362-8.Supports. 362-9.Extension Through Walls. 362-10.Dead Ends. 362-11.Extensions from Wireways. 362-12.Marking. 362-13.Grounding. |
| 188 | B.Nonmetallic Wireways 362-14.Definition. 362-15.Uses Permitted. 362-16.Uses Not Permitted. 362-17.Other Articles. 362-18.Size of Conductors. 362-19.Number of Conductors. 362-20.Deflected Insulated Conductors. 362-21.Splices and Taps. 362-22.Supports. 362-23.Expansion Fittings. 362-24.Extension Through Walls. 362-25.Dead Ends. 362-26.Extensions from Nonmetallic Wireways. |
| 189 | 362-27.Marking. Article 363 – Flat Cable Assemblies: Type FC 363-1.Definition. 363-2.Other Articles. 363-3.Uses Permitted. 363-4.Uses Not Permitted. 363-5.Installation. 363-6.Number of Conductors. 363-7.Size of Conductors. 363-8.Conductor Insulation. 363-9.Splices. 363-10.Taps. 363-11.Dead Ends. 363-12.Fixture Hangers. 363-13.Fittings. 363-14.Extensions. 363-15.Supports. 363-16.Rating. 363-17.Marking. 363-18.Protective Covers. 363-19.Identification. |
| 190 | 363-20.Terminal Block Identification. Article 364 – Busways A.General Requirements 364-1.Scope. 364-2.Definition. 364-3.Other Articles. 364-4.Use. 364-5.Support. 364-6.Through Walls and Floors. 364-7.Dead Ends. 364-8.Branches from Busways. |
| 191 | 364-9.Overcurrent Protection. 364-10.Rating of Overcurrent Protection – Feeders. 364-11.Reduction in Ampacity Size of Busway. 364-12.Feeder or Branch Circuits. 364-13.Rating of Overcurrent Protection – Branch Circuits. 364-15.Marking. B.Requirements for Over 600 Volts, Nominal 364-21.Identification. 364-22.Grounding. |
| 192 | 364-23.Adjacent and Supporting Structures. 364-24.Neutral. 364-25.Barriers and Seals. 364-26.Drain Facilities. 364-27.Ventilated Bus Enclosures. 364-28.Terminations and Connections. 364-29.Switches. 364-30.Wiring 600 Volts or Less, Nominal. Article 365 – Cablebus 365-1.Definition. 365-2.Use. 365-3.Conductors. |
| 193 | 365-5.Overcurrent Protection. 365-6.Support and Extension Through Walls and Floors. 365-7.Fittings. 365-8.Conductor Terminations. 365-9.Grounding. 365-10.Marking. Article 370 – Outlet, Device, Pull and Junction Boxes, Conduit Bodies and Fittin A.Scope and General 370-1.Scope. 370-2.Round Boxes. 370-3.Nonmetallic Boxes. 370-4.Metal Boxes. 370-5.Short Radius Conduit Bodies. |
| 194 | B.Installation 370-15.Damp, Wet, or Hazardous (Classified) Locations. 370-16.Number of Conductors in Outlet, Device, and Junction Boxes, and Conduit B |
| 195 | 370-17.Conductors Entering Boxes, Conduit Bodies, or Fittings. |
| 196 | 370-18.Unused Openings. 370-19.Boxes Enclosing Flush Devices. 370-20.In Wall or Ceiling. 370-21.Repairing Plaster and Drywall or Plasterboard. 370-22.Exposed Surface Extensions. 370-23.Supports. |
| 197 | 370-24.Depth of Outlet Boxes. 370-25.Covers and Canopies. |
| 198 | 370-27.Outlet Boxes. 370-28.Pull and Junction Boxes. |
| 199 | 370-29.Conduit Bodies, Junction, Pull, and Outlet Boxes to Be Accessible. C.Construction Specifications 370-40.Metal Boxes, Conduit Bodies, and Fittings. 370-41.Covers. 370-42.Bushings. 370-43.Nonmetallic Boxes. 370-44.Marking. D.Manholes and Other Electric Enclosures Intended for Personnel Entry 370-50.General. |
| 200 | 370-51.Strength. 370-52.Cabling Work Space. 370-53.Equipment Work Space. 370-54.Bending Space for Conductors. 370-55.Access to Manholes. 370-56.Access to Vaults and Tunnels. 370-57.Ventilation. 370-58.Guarding. |
| 201 | 370-59.Fixed Ladders. E.Pull and Junction Boxes for Use on Systems Over 600 Volts, Nominal 370-70.General. 370-71.Size of Pull and Junction Boxes. 370-72.Construction and Installation Requirements. Article 373 – Cabinets, Cutout Boxes, and Meter Socket Enclosures 373-1.Scope. A.Installation 373-2.Damp, Wet, or Hazardous (Classified) ÈLocaÃtions. |
| 202 | 373-3.Position in Wall. 373-4.Unused Openings. 373-5.Cabinets, Cutout Boxes, and Meter Socket En-Ãclosures. 373-6.Deflection of Conductors. |
| 203 | 373-7.Space in Enclosures. 373-8.Enclosures for Switches or Overcurrent Devices. 373-9.Side or Back Wiring Spaces or Gutters. B.Construction Specifications 373-10.Material. |
| 204 | 373-11.Spacing. Article 374 – Auxiliary Gutters 374-1.Use. 374-2.Extension Beyond Equipment. 374-3.Supports. |
| 205 | 374-4.Covers. 374-5.Number of Conductors. 374-6.Ampacity of Conductors. 374-7.Clearance of Bare Live Parts. 374-8.Splices and Taps. 374-9.Construction and Installation. |
| 206 | Article 380 – Switches A.Installation 380-1.Scope. 380-2.Switch Connections. 380-3.Enclosure. 380-4.Wet Locations. 380-5.Time Switches, Flashers, and Similar Devices. 380-6.Position and Connection of Switches. |
| 207 | 380-7.Indicating. 380-8.Accessibility and Grouping. 380-9.Provisions for Snap Switch Faceplates. 380-10.Mounting of Snap Switches. |
| 208 | 380-11.Circuit Breakers as Switches. 380-12.Grounding of Enclosures. 380-13.Knife Switches. 380-14.Rating and Use of Snap Switches. |
| 209 | B.Construction Specifications 380-15.Marking. 380-16.600-Volt Knife Switches. 380-17.Fused Switches. 380-18.Wire-Bending Space. Article 384 – Switchboards and Panelboards A.General 384-1.Scope. 384-2.Other Articles. 384-3.Support and Arrangement of Busbars and Conductors. |
| 210 | 384-4.Installation. B.Switchboards 384-5.Location of Switchboards. 384-6.Switchboards in Damp or Wet Locations. 384-7.Location Relative to Easily Ignitible Material. 384-8.Clearances. 384-9.Conductor Insulation. 384-10.Clearance for Conductors Entering Bus Enclosures. 384-12.Grounding of Instruments, Relays, Meters, and Instrument Transformers on C.Panelboards 384-13.General. 384-14.Classification of Panelboards. 384-15.Number of Overcurrent Devices on One Panelboard. |
| 211 | 384-16.Overcurrent Protection. 384-17.Panelboards in Damp or Wet Locations. 384-18.Enclosure. 384-19.Relative Arrangement of Switches and Fuses. 384-20.Grounding of Panelboards. |
| 212 | D.Construction Specifications 384-30.Panels. 384-31.Busbars. 384-32.Protection of Instrument Circuits. 384-33.Component Parts. 384-34.Knife Switches. 384-35.Wire-Bending Space in Panelboards. 384-36.Minimum Spacings. |
| 213 | CHAPTER 4 Equipment for General Use Article 400 – Flexible Cords and Cables A.General 400-1.Scope. 400-2.Other Articles. 400-3.Suitability. 400-4.Types. 400-5.Ampacities for Flexible Cords and Cables. |
| 220 | 400-6.Markings. |
| 221 | 400-7.Uses Permitted. 400-8.Uses Not Permitted. 400-9.Splices. |
| 222 | 400-10.Pull at Joints and Terminals. 400-11.In Show Windows and Show Cases. 400-12.Minimum Size. 400-13.Overcurrent Protection. 400-14.Protection from Damage. B.Construction Specifications 400-20.Labels. 400-21.Nominal Insulation Thickness. 400-22.Grounded-Conductor Identification. 400-23.Equipment Grounding Conductor Identification. |
| 223 | 400-24.Attachment Plugs. C.Portable Cables Over 600 Volts, Nominal 400-30.Scope. 400-31.Construction. 400-32.Shielding. 400-33.Grounding. 400-34.Minimum Bending Radii. 400-35.Fittings. 400-36.Splices and Terminations. Article 402 – Fixture Wires 402-1.Scope. 402-2.Other Articles. 402-3.Types. |
| 226 | 402-5.Allowable Ampacities for Fixture Wires. 402-6.Minimum Size. 402-7.Number of Conductors in Conduit or Tubing. 402-8.Grounded Conductor Identification. 402-9.Marking. 402-10.Uses Permitted. 402-11.Uses Not Permitted. 402-12.Overcurrent Protection. |
| 227 | Article 410 – Lighting Fixtures, Lampholders, Lamps, and Receptacles A.General 410-1.Scope. 410-2.Application of Other Articles. 410-3.Live Parts. B.Fixture Locations 410-4.Fixtures in Specific Locations. 410-5.Fixtures Near Combustible Material. 410-6.Fixtures Over Combustible Material. 410-7.Fixtures in Show Windows. 410-8.Fixtures in Clothes Closets. |
| 228 | 410-9.Space for Cove Lighting. C.Provisions at Fixture Outlet Boxes, Canopies, and Pans 410-10.Space for Conductors. 410-11.Temperature Limit of Conductors in Outlet Boxes. 410-12.Outlet Boxes to Be Covered. 410-13.Covering of Combustible Material at Outlet Boxes. 410-14.Connection of Electric-Discharge Lighting Fixtures. |
| 229 | D.Fixture Supports 410-15.Supports. 410-16.Means of Support. |
| 230 | E.Grounding 410-17.General. 410-18.Exposed Fixture Parts. 410-20.Equipment Grounding Conductor Attachment. 410-21.Methods of Grounding. F.Wiring of Fixtures 410-22.Fixture Wiring – General. 410-23.Polarization of Fixtures. 410-24.Conductor Insulation. 410-27.Pendant Conductors for Incandescent Filament Lamps. 410-28.Protection of Conductors and Insulation. 410-29.Cord-Connected Showcases. |
| 231 | 410-30.Cord-Connected Lampholders and Fixtures. 410-31.Fixtures as Raceways. G.Construction of Fixtures 410-34.Combustible Shades and Enclosures. 410-35.Fixture Rating. 410-36.Design and Material. |
| 232 | 410-37.Nonmetallic Fixtures. 410-38.Mechanical Strength. 410-39.Wiring Space. 410-42.Portable Lamps. 410-44.Cord Bushings. 410-45.Tests. 410-46.Live Parts. H.Installation of Lampholders 410-47.Screw-Shell Type. 410-48.Double-Pole Switched Lampholders. 410-49.Lampholders in Wet or Damp Locations. J.Construction of Lampholders 410-50.Insulation. 410-52.Switched Lampholders. |
| 233 | K.Lamps and Auxiliary Equipment 410-53.Bases, Incandescent Lamps. 410-54.Electric-Discharge Lamp Auxiliary ÈEquipÃment. L.Receptacles, Cord Connectors, and Attachment Plugs (Caps) 410-56.Rating and Type. |
| 234 | 410-57.Receptacles in Damp or Wet Locations. 410-58.Grounding-Type Receptacles, Adapters, Cord Connectors, and Attachment Plu M.Special Provisions for Flush and Recessed Fixtures 410-64.General. 410-65.Temperature. |
| 235 | 410-66.Clearance and Installation. 410-67.Wiring. N.Construction of Flush and Recessed Fixtures 410-68.Temperature. 410-70.Lamp Wattage Marking. 410-71.Solder Prohibited. 410-72.Lampholders. P.Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Le 410-73.General. |
| 236 | 410-74.Direct-Current Equipment. 410-75.Open-Circuit Voltage Exceeding 300 Volts.Ã 410-76.Fixture Mounting. 410-77.Equipment Not Integral with Fixture. 410-78.Autotransformers. 410-79.Switches. Q.Special Provisions for Electric-Discharge Lighting Systems of More than 1000 V 410-80.General. 410-81.Control. |
| 237 | 410-82.Lamp Terminals and Lampholders. 410-83.Transformer Ratings. 410-84.Transformer Type. 410-85.Transformers and Secondary Connections. 410-86.Transformer Locations. 410-87.Transformer Loading. 410-88.Wiring Method – Secondary Conductors. 410-89.Lamp Supports. 410-90.Exposure to Damage. 410-91.Marking. 410-92.Switches. R.Lighting Track 410-100.Definition. 410-101.Installation. 410-103.Heavy-Duty Lighting Track. |
| 238 | 410-104.Fastening. 410-105.Construction Requirements. Article 411 – Lighting Systems Operating at 30 Volts or Less 411-1.Scope. 411-2.Lighting Systems Operating at 30 Volts or Less. 411-3.Listing Required. 411-4.Locations Not Permitted. 411-5.Secondary Circuits. 411-6.Branch Circuit. 411-7.Hazardous (Classified) Locations. Article 422 – Appliances A.General 422-1.Scope. 422-3.Other Articles. 422-4.Live Parts. B.Installation 422-10.Branch-Circuit Rating. |
| 239 | 422-11.Overcurrent Protection. 422-12.Central Heating Equipment. |
| 240 | 422-13.Storage-Type Water Heaters. 422-14.Infrared Lamp Industrial Heating Appliances. 422-15.Central Vacuum Outlet Assemblies. 422-16.Flexible Cords. 422-17.Protection of Combustible Material. 422-18.Support of Ceiling-Suspended (Paddle) Fans. |
| 241 | 422-20.Other Installation Methods. C.Disconnecting Means 422-30.General. 422-31.Disconnection of Permanently Connected Appliances. 422-32.Disconnection of Cord- and Plug-Connected Appliances. 422-33.Unit Switch(es) as Disconnecting Means. 422-34.Switch and Circuit Breaker to Be Indicating. |
| 242 | 422-35.Disconnecting Means for Motor-Driven Appliance. D.Construction 422-40.Polarity in Cord- and Plug-Connected Appliances. 422-41.Cord- and Plug-Connected Appliances Subject to Immersion. 422-42.Signals for Heated Appliances. 422-43.Flexible Cords. 422-44.Stands for Cord- and Plug-Connected Immersion Heaters. 422-45.Stands for Cord- and Plug-Connected Appliances. 422-46.Flatirons. 422-47.Water Heater Controls. 422-48.Infrared Lamp Industrial Heating Appliances. 422-49.High-Pressure Spray Washers. |
| 243 | 422-50.Cord- and Plug-Connected Pipe Heating Assemblies. E.Marking 422-60.Nameplate. 422-61.Marking of Heating Elements. 422-62.Appliances Consisting of Motors and Other Loads. Article 424 – Fixed Electric Space-Heating Equipment A.General 424-1.Scope. 424-2.Other Articles. 424-3.Branch Circuits. |
| 244 | B.Installation 424-9.General. 424-10.Special Permission. 424-11.Supply Conductors. 424-12.Locations. 424-13.Spacing from Combustible Materials. C.Control and Protection of Fixed Electric Space-Heating Equipment 424-19.Disconnecting Means. |
| 245 | 424-20.Thermostatically Controlled Switching Devices. 424-21.Switch and Circuit Breaker to Be IndicatÃing. 424-22.Overcurrent Protection. |
| 246 | D.Marking of Heating Equipment 424-28.Nameplate. 424-29.Marking of Heating Elements. E.Electric Space-Heating Cables 424-34.Heating Cable Construction. 424-35.Marking of Heating Cables. 424-36.Clearances of Wiring in Ceilings. 424-37.Location of Branch-Circuit and Feeder Wiring in Exterior Walls. 424-38.Area Restrictions. 424-39.Clearance from Other Objects and Openings. |
| 247 | 424-40.Splices. 424-41.Installation of Heating Cables on Dry Board, in Plaster, and on Concrete 424-42.Finished Ceilings. 424-43.Installation of Nonheating Leads of Cables. 424-44.Installation of Cables in Concrete or Poured Masonry Floors. |
| 248 | 424-45.Inspection and Tests. F.Duct Heaters 424-57.General. 424-58.Identification. 424-59.Airflow. 424-60.Elevated Inlet Temperature. 424-61.Installation of Duct Heaters with Heat Pumps and Air Conditioners. 424-62.Condensation. 424-63.Fan Circuit Interlock. 424-64.Limit Controls. 424-65.Location of Disconnecting Means. 424-66.Installation. G.Resistance-Type Boilers 424-70.Scope. |
| 249 | 424-71.Identification. 424-72.Overcurrent Protection. 424-73.Over-Temperature Limit Control. 424-74.Over-Pressure Limit Control. H.Electrode-Type Boilers 424-80.Scope. 424-81.Identification. 424-82.Branch-Circuit Requirements. |
| 250 | 424-83.Over-Temperature Limit Control. 424-84.Over-Pressure Limit Control. 424-85.Grounding. 424-86.Markings. J.Electric Radiant Heating Panels and Heating Panel Sets 424-90.Scope. 424-91.Definitions. 424-92.Markings. 424-93.Installation. |
| 251 | 424-94.Clearances of Wiring in Ceilings. 424-95.Location of Branch-Circuit and Feeder Wiring in Walls. 424-96.Connection to Branch-Circuit Conductors. 424-97.Nonheating Leads. 424-98.Installation in Concrete or Poured Masonry. |
| 252 | 424-99.Installation Under Floor Covering. Article 426 – Fixed Outdoor Electric Deicing and Snow-Melting Equipment A.General 426-1.Scope. 426-2.Definitions. 426-3.Application of Other Articles. |
| 253 | 426-4.Branch-Circuit Sizing. B.Installation 426-10.General. 426-11.Use. 426-12.Thermal Protection. 426-13.Identification. 426-14.Special Permission. C.Resistance Heating Elements 426-20.Embedded Deicing and Snow-Melting Equipment. 426-21.Exposed Deicing and Snow-Melting Equipment. 426-22.Installation of Nonheating Leads for Embedded Equipment. |
| 254 | 426-23.Installation of Nonheating Leads for Exposed Equipment. 426-24.Electrical Connection. 426-25.Marking. 426-26.Corrosion Protection. 426-27.Grounding Braid or Sheath. 426-28.Equipment Protection. D.Impedance Heating 426-30.Personnel Protection. 426-31.Isolation Transformer. 426-32.Voltage Limitations. 426-33.Induced Currents. 426-34.Grounding. E.Skin-Effect Heating 426-40.Conductor Ampacity. 426-41.Pull Boxes. 426-42.Single Conductor in Enclosure. |
| 255 | 426-43.Corrosion Protection. 426-44.Grounding. F.Control and Protection 426-50.Disconnecting Means. 426-51.Controllers. 426-52.Overcurrent Protection. 426-54.Cord- and Plug-Connected Deicing and Snow-Melting Equipment. Article 427 – Fixed Electric Heating Equipment for Pipelines and Vessels A.General 427-1.Scope. 427-2.Definitions. |
| 256 | 427-3.Application of Other Articles. 427-4.Branch-Circuit Sizing. B.Installation 427-10.General. 427-11.Use. 427-12.Thermal Protection. 427-13.Identification. C.Resistance Heating Elements 427-14.Secured. 427-15.Not in Direct Contact. 427-16.Expansion and Contraction. 427-17.Flexural Capability. 427-18.Power Supply Leads. |
| 257 | 427-19.Electrical Connections. 427-20.Marking. 427-22.Equipment Protection. 427-23.Metal Covering. D.Impedance Heating 427-25.Personnel Protection. 427-26.Isolation Transformer. 427-27.Voltage Limitations. 427-28.Induced Currents. 427-29.Grounding. 427-30.Secondary Conductor Sizing. E.Induction Heating 427-35.Scope. 427-36.Personnel Protection. 427-37.Induced Current. F.Skin-Effect Heating 427-45.Conductor Ampacity. 427-46.Pull Boxes. |
| 258 | 427-47.Single Conductor in Enclosure. 427-48.Grounding. G.Control and Protection 427-55.Disconnecting Means. 427-56.Controls. 427-57.Overcurrent Protection. Article 430 – Motors, Motor Circuits, and Controllers A.General 430-1.Scope. 430-2.Adjustable-Speed Drive Systems. 430-3.Part-Winding Motors. |
| 259 | 430-5.Other Articles. 430-6.Ampacity and Motor Rating Determination. |
| 260 | 430-7.Marking on Motors and Multimotor Equipment. |
| 261 | 430-8.Marking on Controllers. 430-9.Terminals. |
| 262 | 430-10.Wiring Space in Enclosures. 430-11.Protection Against Liquids. 430-12.Motor Terminal Housings. 430-13.Bushing. |
| 263 | 430-14.Location of Motors. 430-16.Exposure to Dust Accumulations. |
| 264 | 430-17.Highest Rated or Smallest Rated Motor. 430-18.Nominal Voltage of Rectifier Systems. B.Motor Circuit Conductors 430-21.General. 430-22.Single Motor. 430-23.Wound-Rotor Secondary. |
| 265 | 430-24.Several Motors or a Motor(s) and Other Load(s).Ã 430-25.Multimotor and Combination-Load Equipment.. 430-26.Feeder Demand Factor. 430-27.Capacitors with Motors. 430-28.Feeder Taps. |
| 266 | 430-29.Constant Voltage Direct-Current Motors – Power Resistors. C.Motor and Branch-Circuit Overload Protection 430-31.General. 430-32.Continuous-Duty Motors. |
| 267 | 430-33.Intermittent and Similar Duty. 430-34.Selection of Overload Relay. |
| 268 | 430-35.Shunting During Starting Period. 430-36.Fuses – In Which Conductor. 430-37.Devices Other than Fuses – In Which Conductor. 430-38.Number of Conductors Opened by Overload Device. 430-39.Motor Controller as Overload Protection. 430-40.Overload Relays. |
| 269 | 430-42.Motors on General-Purpose Branch Circuits. 430-43.Automatic Restarting. 430-44.Orderly Shutdown. D.Motor Branch-Circuit Short-Circuit and Ground-Fault Protection 430-51.General. 430-52.Rating or Setting for Individual Motor Circuit. |
| 270 | 430-53.Several Motors or Loads on One Branch Circuit. |
| 271 | 430-54.Multimotor and Combiniation-Load Equipment. 430-55.Combined Overcurrent Protection. 430-56.Branch-Circuit Protective Devices – In Which Conductor. 430-57.Size of Fuseholder. 430-58.Rating of Circuit Breaker. |
| 272 | E.Motor Feeder Short-Circuit and Ground-Fault Protection 430-61.General. 430-62.Rating or Setting – Motor Load. 430-63.Rating or Setting – Power and Light Loads. F.Motor Control Circuits 430-71.General. 430-72.Overcurrent Protection. |
| 273 | 430-73.Mechanical Protection of Conductor. 430-74.Disconnection. |
| 274 | G.Motor Controllers 430-81.General. 430-82.Controller Design. 430-83.Ratings. |
| 275 | 430-84.Need Not Open All Conductors. 430-85.In Grounded Conductors. 430-87.Number of Motors Served by Each Controller. 430-88.Adjustable-Speed Motors. 430-89.Speed Limitation. 430-90.Combination Fuseholder and Switch as Controller. 430-91.Motor Controller Enclosure Types. H.Motor Control Centers 430-92.General. 430-94.Overcurrent Protection. |
| 276 | 430-95.Service-Entrance Equipment. 430-96.Grounding. 430-97.Busbars and Conductors. |
| 277 | 430-98.Marking. J.Disconnecting Means 430-101.General. 430-102.Location. 430-103.Operation. 430-104.To Be Indicating. 430-105.Grounded Conductors. 430-107.Readily Accessible. 430-108.Every Switch. |
| 278 | 430-109.Type. 430-110.Ampere Rating and Interrupting Capacity. |
| 279 | 430-111.Switch or Circuit Breaker as Both Controller and Disconnecting Means. 430-112.Motors Served by Single Disconnecting Means. 430-113.Energy from More than One Source. |
| 280 | K.Over 600 Volts, Nominal 430-121.General. 430-122.Marking on Controllers. 430-123.Conductor Enclosures Adjacent to Motors. 430-124.Size of Conductors. 430-125.Motor-Circuit Overcurrent Protection. 430-126.Rating of Motor Control Apparatus. 430-127.Disconnecting Means. L.Protection of Live Parts – All Voltages 430-131.General. 430-132.Where Required. |
| 281 | 430-133.Guards for Attendants. M.Grounding – All Voltages 430-141.General. 430-142.Stationary Motors. 430-143.Portable Motors. 430-144.Controllers. 430-145.Method of Grounding. |
| 282 | N.Tables |
| 285 | Article 440 – Air-Conditioning and RefrigeratÃing Equipment A.General 440-1.Scope. 440-2.Definitions. 440-3.Other Articles. |
| 286 | 440-4.Marking on Hermetic Refrigerant Motor-Compressors and Equipment. 440-5.Marking on Controllers. 440-6.Ampacity and Rating. |
| 287 | 440-7.Highest Rated (Largest) Motor. 440-8.Single Machine. B.Disconnecting Means 440-11.General. 440-12.Rating and Interrupting Capacity. |
| 288 | 440-13.Cord-Connected Equipment. 440-14.Location. C.Branch-Circuit Short-Circuit and Ground-Fault Protection 440-21.General. 440-22.Application and Selection. |
| 289 | D.Branch-Circuit Conductors 440-31.General. 440-32.Single Motor-Compressor. 440-33.Motor-Compressor(s) With or Without AddiÃtional Motor Loads. 440-34.Combination Load. 440-35.Multimotor and Combination-Load Equipment. E.Controllers for Motor-Compressors 440-41.Rating. |
| 290 | F.Motor-Compressor and Branch-Circuit Overload Protection 440-51.General. 440-52.Application and Selection. 440-53.Overload Relays. 440-54.Motor-Compressors and Equipment on 15- or 20-Ampere Branch Circuits – Not |
| 291 | 440-55.Cord- and Attachment Plug-Connected Motor-Compressors and Equipment on 15- G.Provisions for Room Air Conditioners 440-60.General. 440-61.Grounding. 440-62.Branch-Circuit Requirements. 440-63.Disconnecting Means. 440-64.Supply Cords. Article 445 – Generators 445-1.General. 445-2.Location. 445-3.Marking. |
| 292 | 445-4.Overcurrent Protection. 445-5.Ampacity of Conductors. 445-6.Protection of Live Parts. 445-7.Guards for Attendants. 445-8.Bushings. 445-9.Generator Terminal Housings. 445-10.Disconnecting Means Required for Generators. Article 450 – Transformers and Transformer Vaults (Including Secondary Ties) 450-1.Scope. |
| 293 | A.General Provisions 450-2.Definitions. 450-3.Overcurrent Protection. |
| 294 | 450-4.Autotransformers 600 Volts, Nominal, or Less. 450-5.Grounding Autotransformers. |
| 295 | 450-6.Secondary Ties. |
| 296 | 450-7.Parallel Operation. 450-8.Guarding. 450-9.Ventilation. 450-10.Grounding. 450-11.Marking. 450-12.Terminal Wiring Space. |
| 297 | 450-13.Accessibility. B.Specific Provisions Applicable to Different Types of Transformers 450-21.Dry-Type Transformers Installed Indoors. 450-22.Dry-Type Transformers Installed Outdoors. 450-23.Less-Flammable Liquid-Insulated Transformers. |
| 298 | 450-24.Nonflammable Fluid-Insulated Transformers. 450-25.Askarel-Insulated Transformers Installed Indoors. 450-26.Oil-Insulated Transformers Installed Indoors. 450-27.Oil-Insulated Transformers Installed Outdoors. 450-28.Modification of Transformers. C.Transformer Vaults 450-41.Location. |
| 299 | 450-42.Walls, Roofs, and Floors. 450-43.Doorways. 450-45.Ventilation Openings. 450-46.Drainage. 450-47.Water Pipes and Accessories. 450-48.Storage in Vaults. Article 455 – Phase Converters A.General 455-1.Scope. |
| 300 | 455-2.Definitions. 455-3.Other Articles. 455-4.Marking. 455-5.Equipment Grounding Connection. 455-6.Conductors. 455-7.Overcurrent Protection. 455-8.Disconnecting Means. |
| 301 | 455-9.Connection of Single-Phase Loads. 455-10.Terminal Housings. B.Specific Provisions Applicable to Different Types of Phase Converters 455-20.Disconnecting Means. 455-21.Start-Up. 455-22.Power Interruption. 455-23.Capacitors. Article 460 – Capacitors 460-1.Scope. 460-2.Enclosing and Guarding. A.600 Volts, Nominal, and Under 460-6.Discharge of Stored Energy. 460-8.Conductors. |
| 302 | 460-9.Rating or Setting of Motor Overload Device. 460-10.Grounding. 460-12.Marking. B.Over 600 Volts, Nominal 460-24.Switching. 460-25.Overcurrent Protection. |
| 303 | 460-26.Identification. 460-27.Grounding. 460-28.Means for Discharge. Article 470 – Resistors and Reactors (For Rheostats, See Section 430-82.) A.600 Volts, Nominal, and Under 470-1.Scope. 470-2.Location. 470-3.Space Separation. 470-4.Conductor Insulation. B.Over 600 Volts, Nominal 470-18.General. 470-19.Grounding. 470-20.Oil-Filled Reactors. Article 480 – Storage Batteries 480-1.Scope. |
| 304 | 480-2.Definitions. 480-3.Wiring and Equipment Supplied from Batteries. 480-4.Grounding. 480-5.Insulation of Batteries Not Over 250 Volts. 480-6.Insulation of Batteries of Over 250 Volts. 480-7.Racks and Trays. 480-8.Battery Locations. 480-9.Vents. |
| 305 | Article 490 – Equipment, Over 600 Volts, Nominal A.General 490-1.Scope. 490-2.Definition. 490-3.Oil-Filled Equipment. B.Equipment – Specific Provisions 490-21.Circuit-Interrupting Devices. |
| 307 | 490-22.Isolating Means. 490-23.Voltage Regulators. 490-24.Minimum Space Separation. C.Equipment – Metal-Enclosed Power Switchgear and Industrial Control Assemblies 490-30.General. 490-31.Arrangement of Devices in Assemblies. 490-32.Guarding of High-Voltage Energized Parts Within a Compartment. 490-33.Guarding of Low Voltage Energized Parts With-in a Compartment. 490-34.Clearance for Cable Conductors Entering Enclosure. |
| 308 | 490-35.Accessibility of Energized Parts. 490-36.Grounding. 490-37.Grounding of Devices. 490-38.Door Stops and Cover Plates. 490-39.Gas Discharge from Interrupting Devices. 490-40.Inspection Windows. 490-41.Location of Devices. |
| 309 | 490-42.Interlocks – Interrupter Switches. 490-43.Stored Energy for Opening. 490-44.Fused Interrupter Switches. 490-45.Interlocks – Circuit Breakers. D.Mobile and Portable Equipment 490-51.General. 490-52.Overcurrent Protection. 490-53.Enclosures. 490-54.Collector Rings. 490-55.Power Cable Connections to Mobile Machines. |
| 310 | 490-56.High-Voltage Portable Cable for Main Power Supply. E.Electrode-Type Boilers 490-70.General. 490-71.Electric Supply System. 490-72.Branch-Circuit Requirements. 490-73.Pressure and Temperature Limit Control. 490-74.Grounding. |
| 311 | CHAPTER 5 Special Occupancies Article 500 – Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 500-1.Scope – Articles 500 through 504. 500-2.Other Articles. 500-3.General. |
| 312 | 500-4.Protection Techniques. |
| 313 | 500-5.Special Precaution. |
| 315 | 500-6.Specific Occupancies. |
| 316 | 500-7.Class I Locations. 500-8.Class II Locations. |
| 317 | 500-9.Class III Locations. Article 501 – Class I Locations 501-1.General. 501-2.Transformers and Capacitors. |
| 318 | 501-3.Meters, Instruments, and Relays. 501-4.Wiring Methods. |
| 319 | 501-5.Sealing and Drainage. |
| 322 | 501-6.Switches, Circuit Breakers, Motor Controllers, and Fuses. |
| 323 | 501-7.Control Transformers and Resistors. 501-8.Motors and Generators. |
| 324 | 501-9.Lighting Fixtures. |
| 325 | 501-10.Utilization Equipment. 501-11.Flexible Cords, Class I, Divisions 1 and 2. 501-12.Receptacles and Attachment Plugs, Class I, Divisions 1 and 2. 501-13.Conductor Insulation, Class I, Divisions 1 and 2. 501-14.Signaling, Alarm, Remote-Control, and Communications Systems. |
| 326 | 501-15.Live Parts, Class I, Divisions 1 and 2. 501-16.Grounding, Class I, Divisions 1 and 2. 501-17.Surge Protection. 501-18.Multiwire Branch Circuits. Article 502 – Class II Locations 502-1.General. |
| 327 | 502-2.Transformers and Capacitors. 502-4.Wiring Methods. |
| 328 | 502-5.Sealing, Class II, Divisions 1 and 2. 502-6.Switches, Circuit Breakers, Motor Controllers, and Fuses. 502-7.Control Transformers and Resistors. |
| 329 | 502-8.Motors and Generators. 502-9.Ventilating Piping. 502-10.Utilization Equipment. |
| 330 | 502-11.Lighting Fixtures. 502-12.Flexible Cords – Class II, Divisions 1 and 2.Ã |
| 331 | 502-13.Receptacles and Attachment Plugs. 502-14.Signaling, Alarm, Remote-Control, and Communications Systems; and Meters, 502-15.Live Parts, Class II, Divisions 1 and 2. 502-16.Grounding, Class II, Divisions 1 and 2. |
| 332 | 502-17.Surge Protection – Class II, Divisions 1 and 2.Ã 502-18.Multiwire Branch Circuits. Article 503 – Class III Locations 503-1.General. 503-2.Transformers and Capacitors – Class III, Divisions 1 and 2. 503-3.Wiring Methods. 503-4.Switches, Circuit Breakers, Motor Controllers, and Fuses – Class III, Divisions 1 and 2. 503-5.Control Transformers and Resistors = Class III, Divisions 1 and 2. |
| 333 | 503-6.Motors and Generators – Class III, Divisions 1 and 2. 503-7.Ventilating Piping – Class III, Divisions 1 and 2. 503-8.Utilization Equipment – Class III, Divisions 1 and 2. 503-9.Lighting Fixtures – Class III, Divisions 1 and 2. 503-10.Flexible Cords – Class III, Divisions 1 and 2. |
| 334 | 503-11.Receptacles and Attachment Plugs – Class III, Divisions 1 and 2. 503-12.Signaling, Alarm, Remote-Control, and Local Loudspeaker Intercommunications 503-13.Electric Cranes, Hoists, and Similar Equipment – Class III, Divisions 1 and 2. 503-14.Storage Battery Charging Equipment – Class III, Divisions 1 and 2. 503-15.Live Parts – Class III, Divisions 1 and 2. 503-16.Grounding – Class III, Divisions 1 and 2. |
| 335 | Article 504 – Intrinsically Safe Systems 504-1.Scope. 504-2.Definitions. 504-3.Application of Other Articles. 504-4.Equipment Approval. 504-10.Equipment Installation. 504-20.Wiring Methods. 504-30.Separation of Intrinsically Safe Conductors. |
| 336 | 504-50.Grounding. 504-60.Bonding. 504-70.Sealing. 504-80.Identification. |
| 337 | Article 505 – Class I, Zone 0, 1, and 2 Locations 505-1.Scope. 505-2.Other Articles. 505-3.Location and General Requirements. 505-4.Protection Techniques. |
| 339 | 505-5.Reference Standards. 505-6.Special Precaution. 505-7.Grouping and Classification. |
| 340 | 505-8.Class I Temperature. 505-9.Zone Classification. |
| 341 | 505-10.Listing, Marking, and Documentation. |
| 343 | 505-15.Wiring Methods. |
| 344 | 505-20.Equipment. 505-21.Increased Safety “e” Motors and Generators. 505-25.Grounding and Bonding. Article 510 – Hazardous (Classified) Locations – Specific 510-1.Scope. 510-2.General. |
| 345 | Article 511 – Commercial Garages, Repair and Storage 511-1.Scope. 511-2.Locations. 511-3.Class I Locations. 511-4.Wiring and Equipment in Class I Locations. 511-5.Sealing. 511-6.Wiring in Spaces Above Class I Locations. |
| 346 | 511-7.Equipment Above Class I Locations. 511-8.Battery Charging Equipment. 511-9.Electric Vehicle Charging. 511-10.Ground-Fault Circuit-Interrupter Protection for Personnel. 511-16.Grounding. Article 513 – Aircraft Hangars 513-1.Scope. 513-2.Definitions. |
| 347 | 513-3.Classification of Locations. 513-4.Wiring and Equipment in Class I Locations. 513-5.Wiring Not Within Class I Locations. 513-6.Equipment Not Within Class I Locations. 513-7.Stanchions, Rostrums, and Docks. |
| 348 | 513-8.Sealing. 513-9.Aircraft Electrical Systems. 513-10.Aircraft Batteries – Charging and Equipment.Ã 513-11.External Power Sources for Energizing Aircraft. 513-12.Mobile Servicing Equipment with Electric Components. 513-16.Grounding. Article 514 – Gasoline Dispensing and Service Stations 514-1.Definition. |
| 349 | 514-2.Class I Locations. |
| 351 | 514-3.Wiring and Equipment Within Class I Locations. 514-4.Wiring and Equipment Above Class I Locations. 514-5.Circuit Disconnects. 514-6.Provisions for Maintenance and Service of Dispensing Equipment. 514-7.Sealing. 514-8.Underground Wiring. |
| 352 | 514-16.Grounding. Article 515 – Bulk Storage Plants 515-1.Definition. 515-2.Class I Locations. |
| 354 | 515-3.Wiring and Equipment Within Class I Locations. 515-4.Wiring and Equipment Above Class I Locations. 515-5.Underground Wiring. |
| 355 | 515-6.Sealing. 515-7.Gasoline Dispensing. 515-16.Grounding. Article 516 – Spray Application, Dipping, and Coating Processes 516-1.Scope. |
| 356 | 516-2.Classification of Locations. |
| 357 | 516-3.Wiring and Equipment in Class I Locations. |
| 358 | 516-4.Fixed Electrostatic Equipment. |
| 359 | 516-5.Electrostatic Hand-Spraying Equipment. |
| 360 | 516-6.Powder Coating. |
| 361 | 516-7.Wiring and Equipment Above Class I and II Locations. 516-16.Grounding. Article 517 – Health Care Facilities A.General 517-1.Scope. 517-2.General. 517-3.Definitions. |
| 363 | B.Wiring and Protection 517-10.Applicability. 517-11.General Installation – Construction Criteria. |
| 364 | 517-12.Wiring Methods. 517-13.Grounding of Receptacles and Fixed Electric Equipment. 517-14.Panelboard Bonding. 517-16.Receptacles with Insulated Grounding Terminals. 517-17.Ground-Fault Protection. 517-18.General Care Areas. |
| 365 | 517-19.Critical Care Areas. |
| 366 | 517-20.Wet Locations. 517-21.Ground-Fault Circuit-Interrupter Protection for Personnel. C.Essential Electrical System 517-25.Scope. 517-30.Essential Electrical Systems for Hospitals. |
| 368 | 517-31.Emergency System. 517-32.Life Safety Branch. |
| 369 | 517-33.Critical Branch. 517-34.Equipment System Connection to Alternate Power Source. |
| 370 | 517-35.Sources of Power. |
| 371 | 517-40.Essential Electrical Systems for Nursing Homes and Limited Care Facilities 517-41.Essential Electrical Systems. |
| 372 | 517-42.Automatic Connection to Life Safety Branch. |
| 373 | 517-43.Connection to Critical Branch. 517-44.Sources of Power. |
| 374 | 517-45.Essential Electrical Systems for Ambulatory Health Care Centers. 517-50.Essential Electrical Systems for Clinics, Medical and Dental Offices, and D.Inhalation Anesthetizing Locations 517-60.Anesthetizing Location Classification. |
| 375 | 517-61.Wiring and Equipment. |
| 376 | 517-62.Grounding. 517-63.Grounded Power Systems in Anesthetizing Locations. 517-64.Low-Voltage Equipment and Instruments. |
| 377 | E.X-Ray Installations 517-71.Connection to Supply Circuit. 517-72.Disconnecting Means. 517-73.Rating of Supply Conductors and Overcurrent Protection. |
| 378 | 517-74.Control Circuit Conductors. 517-75.Equipment Installations. 517-76.Transformers and Capacitors. 517-77.Installation of High-Tension X-ray Cables. 517-78.Guarding and Grounding. F.Communications, Signaling Systems, Data Systems, Fire Alarm Systems, and Systems 517-80.Patient Care Areas. 517-81.Other-than-Patient-Care Areas. 517-82.Signal Transmission Between Appliances. |
| 379 | G.Isolated Power Systems 517-160.Isolated Power Systems. |
| 380 | Article 518 – Places of Assembly 518-1.Scope. 518-2.General Classifications. 518-3.Other Articles. 518-4.Wiring Methods. |
| 381 | 518-5.Supply. Article 520 – Theaters, Audience Areas of Motion Picture and Television Studios A.General 520-1.Scope. 520-2.Definitions. |
| 382 | 520-3.Motion Picture Projectors. 520-4.Audio Signal Processing, Amplification, and Reproduction Equipment. 520-5.Wiring Methods. 520-6.Number of Conductors in Raceway. 520-7.Enclosing and Guarding Live Parts. 520-8.Emergency Systems. 520-9.Branch Circuits. 520-10.Portable Equipment. B.Fixed Stage Switchboards 520-21.Dead Front. 520-22.Guarding Back of Switchboard. 520-23.Control and Overcurrent Protection of Receptacle Circuits. 520-24.Metal Hood. 520-25.Dimmers. |
| 383 | 520-26.Type of Switchboard. 520-27.Stage Switchboard Feeders. C.Fixed Stage Equipment Other than Switchboards 520-41.Circuit Loads. |
| 384 | 520-42.Conductor Insulation. 520-43.Footlights. 520-44.Borders and Proscenium Sidelights. 520-45.Receptacles. |
| 385 | 520-46.Connector Strips, Drop Boxes, Floor Pockets, and Other Outlet Enclosures. 520-47.Backstage Lamps (Bare Bulbs). 520-48.Curtain Machines. 520-49.Smoke Ventilator Control. D.Portable Switchboards on Stage 520-50.Road Show Connection Panel (A Type of Patch Panel). 520-51.Supply. 520-52.Overcurrent Protection. 520-53.Construction and Feeders. |
| 388 | E.Portable Stage Equipment Other than Switchboards 520-61.Arc Lamp Fixtures. 520-62.Portable Power Distribution Units. 520-63.Bracket Fixture Wiring. 520-64.Portable Strips. 520-65.Festoons. 520-66.Special Effects. 520-67.Multiple Branch-circuit Cable Connectors.. 520-68.Conductors for Portables. |
| 389 | 520-69.Adapters. F.Dressing Rooms 520-71.Pendant Lampholders. 520-72.Lamp Guards. 520-73.Switches Required. G.Grounding 520-81.Grounding. Article 525 – Carnivals, Circuses, Fairs, and Similar Events A.General Requirements 525-1.Scope. 525-3.Other Articles. |
| 390 | 525-6.Protection of Electrical Equipment. B.Installation 525-10.Power Sources. 525-12.Overhead Conductor Clearances. 525-13.Wiring Methods. 525-14.Boxes and Fittings. 525-15.Portable Distribution or Termination Boxes. |
| 391 | 525-16.Overcurrent Protection. 525-17.Motors. 525-18.Ground-Fault Circuit-Interrupter Protection for Personnel. C.Grounding and Bonding 525-20.General. 525-21.Equipment. 525-22.Equipment Grounding Conductor. D.Disconnecting Means 525-30.Type and Location. E.Attractions Utilizing Pools, Fountains, and Similar Installations with Contain 525-40.Wiring and Equipment. Article 530 – Motion Picture and Television Studios and Similar Locations A.General 530-1.Scope. |
| 392 | 530-2.Definitions. 530-6.Portable Equipment. B.Stage or Set 530-11.Permanent Wiring. 530-12.Portable Wiring. |
| 393 | 530-13.Stage Lighting and Effects Control. 530-14.Plugging Boxes. 530-15.Enclosing and Guarding Live Parts. 530-16.Portable Lamps. 530-17.Portable Arc Lamp Fixtures. 530-18.Overcurrent Protection. |
| 394 | 530-19.Sizing of Feeder Conductors for Television Studio Sets. 530-20.Grounding. 530-21.Plugs and Receptacles. 530-22.Single-Pole Separable Connectors. 530-23.Branch Circuits. |
| 395 | C.Dressing Rooms 530-31.Dressing Rooms. D.Viewing, Cutting, and Patching Tables 530-41.Lamps at Tables. E.Cellulose Nitrate Film Storage Vaults 530-51.Lamps in Cellulose Nitrate Film Storage Vaults. 530-52.Motors and Other Equipment in Cellulose Nitrate Film Storage Vaults. F.Substations 530-61.Substations. 530-62.Portable Substations. 530-63.Overcurrent Protection of Direct-Current Generators. 530-64.Direct-Current Switchboards. G.Separately Derived Systems with 60 Volts to Ground 530-70.General. 530-71.Wiring Methods. 530-72.Grounding. |
| 396 | 530-73.Receptacles. Article 540 – Motion Picture Projectors A.General 540-1.Scope. B.Definitions 540-2.Professional Projector. 540-3.Nonprofessional Projector. C.Equipment and Projectors of the Professional Type 540-10.Motion Picture Projection Room Required. 540-11.Location of Associated Electrical Equipment. |
| 397 | 540-12.Work Space. 540-13.Conductor Size. 540-14.Conductors on Lamps and Hot Equipment. 540-15.Flexible Cords. 540-20.Approval. 540-21.Marking. D.Nonprofessional Projectors 540-31.Motion Picture Room Not Required. 540-32.Approval. E.Audio Signal Processing, Amplification, and Reproduction Equipment 540-50.Audio Signal Processing, Amplification, and Reproduction Equipment. Article 545 – Manufactured Buildings A.General 545-1.Scope. 545-2.Other Articles. |
| 398 | 545-3.Definitions. 545-4.Wiring Methods. 545-5.Service Entrance Conductors. 545-6.Installation of Service Entrance Conductors. 545-7.Service Equipment. 545-8.Protection of Conductors and Equipment. 545-9.Boxes. 545-10.Receptacle or Switch with Integral Enclosure. 545-11.Bonding and Grounding. 545-12.Grounding Electrode Conductor. 545-13.Component Interconnections. Article 547 – Agricultural Buildings 547-1.Scope. |
| 399 | 547-2.Other Articles. 547-3.Surface Temperatures. 547-4.Wiring Methods. 547-5.Switches, Circuit Breakers, Controllers, and Fuses. 547-6.Motors. 547-7.Lighting Fixtures. 547-8.Service Equipment, Separately Derived Systems, Feeders, Disconnecting Means |
| 400 | 547-9.Bonding and Equipotential Plane. Article 550 – Mobile Homes, Manufactured Homes, and Mobile Home Parks A.General 550-1.Scope. 550-2.Definitions. |
| 401 | 550-3.Other Articles. 550-4.General Requirements. B.Mobile Homes 550-5.Power Supply. |
| 402 | 550-6.Disconnecting Means and Branch-Circuit Protective Equipment. |
| 403 | 550-7.Branch Circuits. |
| 404 | 550-8.Receptacle Outlets. |
| 405 | 550-9.Fixtures and Appliances. 550-10.Wiring Methods and Materials. |
| 406 | 550-11.Grounding. 550-12.Testing. |
| 407 | 550-13.Calculations. 550-14.Interconnection of Multiple Section Mobile Home Units. 550-15.Outdoor Outlets, Fixtures, Air-Cooling Equipment, etc. |
| 408 | C.Services and Feeders 550-21.Distribution System. 550-22.Minimum Allowable Demand Factors. 550-23.Service Equipment. |
| 409 | 550-24.Feeder. Article 551 – Recreational Vehicles and Recreational Vehicle Parks A.General 551-1.Scope. 551-2.Definitions. |
| 410 | 551-3.Other Articles. 551-4.General Requirements. B.Low-Voltage Systems 551-10.Low-Voltage Systems. |
| 412 | C.Combination Electrical Systems 551-20.Combination Electrical Systems. D.Other Power Sources 551-30.Generator Installations. |
| 413 | 551-31.Multiple Supply Source. 551-32.Other Sources. 551-33.Alternate Source Restriction. E.Nominal 120-Volt or 120/240-Volt Systems 551-40.120-Volt or 120/240-Volt, Nominal, Systems. |
| 414 | 551-41.Receptacle Outlets Required. 551-42.Branch Circuits Required. |
| 415 | 551-43.Branch-Circuit Protection. 551-44.Power-Supply Assembly. 551-45.Distribution Panelboard. 551-46.Means for Connecting to Power Supply. |
| 417 | 551-47.Wiring Methods. |
| 418 | 551-48.Conductors and Boxes. 551-49.Grounded Conductors. 551-50.Connection of Terminals and Splices. 551-51.Switches. 551-52.Receptacles. 551-53.Lighting Fixtures. |
| 419 | 551-54.Grounding. 551-55.Interior Equipment Grounding. 551-56.Bonding of Noncurrent-Carrying Metal Parts. |
| 420 | 551-57.Appliance Accessibility and Fastening. F.Factory Tests 551-60.Factory Tests (Electrical). G.Recreational Vehicle Parks 551-71.Type Receptacles Provided. 551-72.Distribution System. 551-73.Calculated Load. |
| 421 | 551-74.Overcurrent Protection. 551-75.Grounding. 551-76.Grounding – Recreational Vehicle Site Supply Equipment. 551-77.Recreational Vehicle Site Supply Equipment. |
| 422 | 551-78.Protection of Outdoor Equipment. 551-79.Clearance for Overhead Conductors. 551-80.Underground Service, Feeder, Branch-Circuit, and Recreational Vehicle Site 551-81.Receptacles. Article 552 – Park Trailers A.General 552-1.Scope. 552-2.Definitions. |
| 423 | 552-3.Other Articles. 552-4.General Requirements. B.Low-Voltage Systems 552-10.Low-Voltage Systems. |
| 424 | C.Combination Electrical Systems 552-20.Combination Electrical Systems. |
| 425 | D.Nominal 120-Volt or 120/240-Volt Systems 552-40.120-Volt or 120/240-Volt, Nominal, Systems. 552-41.Receptacle Outlets Required. 552-43.Power Supply. |
| 426 | 552-44.Cord. |
| 427 | 552-45.Distribution Panelboard. 552-46.Branch Circuits. |
| 428 | 552-47.Calculations. 552-48.Wiring Methods. |
| 429 | 552-49.Conductors and Boxes. |
| 430 | 552-50.Grounded Conductors. 552-51.Connection of Terminals and Splices. 552-52.Switches. 552-53.Receptacles. 552-54.Lighting Fixtures. 552-55.Grounding. 552-56.Interior Equipment Grounding. |
| 431 | 552-57.Bonding of Noncurrent-Carrying Metal Parts. 552-58.Appliance Accessibility and Fastening. 552-59.Outdoor Outlets, Fixtures, Air-Cooling Equipment, etc. E.Factory Tests 552-60.Factory Tests (Electrical). |
| 432 | Article 553 – Floating Buildings A.General 553-1.Scope. 553-2.Definition. 553-3.Application of Other Articles. B.Services and Feeders 553-4.Location of Service Equipment. 553-5.Service Conductors. 553-6.Feeder Conductors. 553-7.Installation of Services and Feeders. C.Grounding 553-8.General Requirements. 553-9.Insulated Neutral. 553-10.Equipment Grounding. |
| 433 | 553-11.Bonding of Noncurent-Carrying Metal Parts. Article 555 – Marinas and Boatyards 555-1.Scope. 555-2.Application of Other Articles. 555-3.Receptacles. 555-4.Disconnecting Means. 555-5.Branch Circuits. 555-6.Feeders and Services. 555-5.Branch Circuits. 555-6.Feeders and Services. 555-7.Wiring Methods. |
| 434 | 555-8.Grounding. 555-9.Wiring Over and Under Navigable Water. 555-10.Gasoline Dispensing Stations – Hazardous (Classified) Locations. 555-11.Location of Service Equipment. |
| 435 | CHAPTER 6 Special Equipment Article 600 – Electric Signs and Outline Lighting A.General 600-1.Scope. 600-2.Definitions. 600-3.Listing. 600-4.Markings. 600-5.Branch Circuits. 600-6.Disconnects. |
| 436 | 600-7.Grounding. 600-8.Enclosures. 600-9.Location. 600-10.Portable or Mobile Signs. |
| 437 | 600-21.Ballasts, Transformers, and Electronic Power Supplies. 600-22.Ballasts. 600-23.Transformers and Electronic Power Supplies. B.Field-Installed Skeleton Tubing 600-30.Applicability. 600-31.Neon Secondary-Circuit Conductors, 1000 Volts or Less, Nominal. |
| 438 | 600-32.Neon Secondary Circuit Conductors, Over 1000 Volts, Nominal. 600-41.Neon Tubing. 600-42.Electrode Connections. |
| 439 | Article 604 – Manufactured Wiring Systems 604-1.Scope. 604-2.Definition. 604-3.Other Articles. 604-4.Uses Permitted. 604-5.Uses Not Permitted. 604-6.Construction. 604-7.Unused Outlets. Article 605 – Office Furnishings (Consisting of Lighting Accessories and Wired Partitions) 605-1.Scope. 605-2.General. 605-3.Wireways. |
| 440 | 605-4.Partition Interconnections. 605-5.Lighting Accessories. 605-6.Fixed-Type Partitions. 605-7.Freestanding-Type Partitions. 605-8.Freestanding-Type Partitions, Cord and Plug Connected. Article 610 – Cranes and Hoists A.General 610-1.Scope. 610-2.Special Requirements for Particular Locations. |
| 441 | B.Wiring 610-11.Wiring Method. 610-12.Raceway or Cable Terminal Fittings. 610-13.Types of Conductors. 610-14.Rating and Size of Conductors. |
| 443 | 610-15.Common Return. C.Contact Conductors 610-21.Installation of Contact Conductors. |
| 444 | 610-22.Collectors. D.Disconnecting Means 610-31.Runway Conductor Disconnecting Means. 610-32.Disconnecting Means for Cranes and Monorail Hoists. 610-33.Rating of Disconnecting Means. E.Overcurrent Protection 610-41.Feeders, Runway Conductors. 610-42.Branch-Circuit Short-Circuit and Ground-Fault Protection. |
| 445 | 610-43.Overload Protection. F.Control 610-51.Separate Controllers. 610-53.Overcurrent Protection. 610-55.Limit Switch. 610-57.Clearance. G.Grounding 610-61.Grounding. |
| 446 | Article 620 – Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts A.General 620-1.Scope. 620-2.Definitions. |
| 447 | 620-3.Voltage Limitations. 620-4.Live Parts Enclosed. 620-5.Working Clearances. B.Conductors 620-11.Insulation of Conductors. |
| 448 | 620-12.Minimum Size of Conductors. 620-13.Feeder and Branch-Circuit Conductors. 620-14.Feeder Demand Factor. 620-15.Motor Controller Rating. C.Wiring 620-21.Wiring Methods. |
| 450 | 620-22.Branch Circuits for Car Lighting, Receptacle(s), Ventilation, Heating, and 620-24.Branch Circuit for Hoistway Pit Lighting and Receptacle(s). 620-24.Branch Circuit for Hoistway Pit Lighting and Receptacle(s). D.Installation of Conductors 620-32.Metal Wireways and Nonmetallic Wireways. 620-33.Number of Conductors in Raceways. |
| 451 | 620-34.Supports. 620-35.Auxiliary Gutters. 620-36.Different Systems in One Raceway or Traveling Cable. 620-37.Wiring in Hoistways and Machine Rooms. 620-38.Electrical Equipment in Garages and Similar Occupancies. E.Traveling Cables 620-41.Suspension of Traveling Cables. 620-42.Hazardous (Classified) Locations. 620-43.Location of and Protection for Cables. |
| 452 | 620-44.Installation of Traveling Cables. F.Disconnecting Means and Control 620-51.Disconnecting Means. 620-52.Power from More than One Source. |
| 453 | 620-53.Car Light, Receptacle(s), and Ventilation Disconnecting Means. 620-54.Heating and Air-Conditioning Disconnecting Means. G.Overcurrent Protection 620-61.Overcurrent Protection. 620-62.Selective Coordination. H.Machine Room 620-71.Guarding Equipment. |
| 454 | J.Grounding 620-81.Metal Raceways Attached to Cars. 620-82.Electric Elevators. 620-83.Nonelectric Elevators. 620-84.Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Lifts. 620-85.Ground-Fault Circuit-Interrupter Protection for Personnel. K.Emergency and Standby Power Systems 620-91.Emergency and Standby Power Systems. Article 625 – Electric Vehicle Charging System A.General 625-1.Scope. 625-2.Definitions. |
| 455 | 625-3.Other Articles. 625-4.Voltages. 625-5.Listed or Labeled. B.Wiring Methods 625-9.Electric Vehicle Coupler. C.Equipment Construction 625-13.Electric Vehicle Supply Equipment. 625-14.Rating. 625-15.Markings. |
| 456 | 625-16.Means of Coupling. 625-17.Cable. 625-18.Interlock. 625-19.Automatic De-energization of Cable. D.Control and Protection 625-21.Overcurrent Protection. 625-22.Personnel Protection System. 625-23.Disconnecting Means. 625-25.Loss of Primary Source. E.Electric Vehicle Supply Equipment Locations 625-28.Hazardous (Classified) Locations. 625-29.Indoor Sites. |
| 457 | 625-30.Outdoor Sites. Article 630 – Electric Welders A.General 630-1.Scope. B.Arc Welders 630-11.Ampacity of Supply Conductors. |
| 458 | 630-12.Overcurrent Protection. 630-13.Disconnecting Means. 630-14.Marking. C.Resistance Welders 630-31.Ampacity of Supply Conductors. |
| 459 | 630-32.Overcurrent Protection. 630-33.Disconnecting Means. 630-34.Marking. D.Welding Cable 630-41.Conductors. 630-42.Installation. |
| 460 | Article 640 – Audio Signal Processing, Amplification, and Reproduction Equipment A.General 640-1.Scope. 640-2.Definitions. |
| 461 | 640-3.Locations and Other Articles. 640-4.Protection of Electrical Equipment. 640-5.Access to Electrical Equipment Behind Panels Designed to Allow Access. 640-6.Mechanical Execution of Work. 640-7.Grounding. |
| 462 | 640-8.Grouping of Conductors. 640-9.Wiring Methods. 640-10.Audio Systems Near Bodies of Water. |
| 463 | B.Permanent Audio System Installations 640-21.Use of Flexible Cords and Cables. 640-22.Wiring of Equipment Racks. 640-23.Conduit or Tubing. 640-24.Wireways, Gutters, and Auxiliary Gutters. 640-25.Loudspeaker Installation in Fire Resistance-Rated Partitions, Walls, and |
| 464 | C.Portable and Temporary Audio System Installations 640-41.Multipole Branch-Circuit Cable Connectors. 640-42.Use of Flexible Cords and Cables. 640-43.Wiring of Equipment Racks. 640-44.Environmental Protection of Equipment. 640-45.Protection of Wiring. |
| 465 | 640-46.Equipment Access. Article 645 – Information Technology Equipment 645-1.Scope. 645-2.Special Requirements for Information Technology Equipment Room. 645-5.Supply Circuits and Interconnecting Cables. |
| 466 | 645-6.Cables Not in Information Technology Equipment Room. 645-7.Penetrations. 645-10.Disconnecting Means. 645-11.Uninterruptible Power Supplies (UPS). 645-15.Grounding. 645-16.Marking. Article 650 – Pipe Organs 650-1.Scope. |
| 467 | 650-2.Other Articles. 650-3.Source of Energy. 650-4.Grounding. 650-5.Conductors. 650-6.Installation of Conductors. 650-7.Overcurrent Protection. Article 660 – X-Ray Equipment A.General 660-1.Scope. 660-2.Definitions. 660-3.Hazardous (Classified) Locations. 660-4.Connection to Supply Circuit. |
| 468 | 660-5.Disconnecting Means. 660-6.Rating of Supply Conductors and Overcurrent Protection. 660-7.Wiring Terminals. 660-8.Number of Conductors in Raceway. 660-9.Minimum Size of Conductors. 660-10.Equipment Installations. B.Control 660-20.Fixed and Stationary Equipment. 660-21.Portable and Mobile Equipment. 660-23.Industrial and Commercial Laboratory Equipment. 660-24.Independent Control. |
| 469 | C.Transformers and Capacitors 660-35.General. 660-36.Capacitors. D.Guarding and Grounding 660-47.General. 660-48.Grounding. Article 665 – Induction and Dielectric Heating A.General 665-1.Scope. 665-2.Definitions. 665-3.Other Articles. 665-4.Hazardous (Classified) Locations. B.Guarding, Grounding, and Labeling 665-20.Enclosures. 665-21.Panel Controls. 665-22.Access to Internal Equipment. 665-23.Warning Labels or Signs. |
| 470 | 665-24.Capacitors. 665-25.Work Applicator Shielding. 665-26.Grounding and Bonding. 665-27.Marking. 665-28.Control Enclosures. C.Motor-Generator Equipment 665-40.General. 665-41.Ampacity of Supply Conductors. 665-42.Overcurrent Protection. 665-43.Disconnecting Means. 665-44.Output Circuit. |
| 471 | 665-47.Remote Control. D.Equipment Other than Motor-Generators 665-60.General. 665-61.Ampacity of Supply Conductors. 665-62.Overcurrent Protection. 665-63.Disconnecting Means. 665-64.Output Circuit. 665-66.Line Frequency in Converter Equipment Output. 665-67.Keying. 665-68.Remote Control. Article 668 – Electrolytic Cells 668-1.Scope. |
| 472 | 668-2.Definitions. 668-3.Other Articles. 668-10.Cell Line Working Zone. |
| 473 | 668-11.Direct-Current Cell Line Process Power Supply. 668-12.Cell Line Conductors. 668-13.Disconnecting Means. 668-14.Shunting Means. 668-15.Grounding. 668-20.Portable Electrical Equipment. 668-21.Power Supply Circuits and Receptacles for Portable Electrical Equipment. |
| 474 | 668-30.Fixed and Portable Electrical Equipment. 668-31.Auxiliary Nonelectric Connections. 668-32.Cranes and Hoists. 668-40.Enclosures. Article 669 – Electroplating 669-1.Scope. 669-2.Other Articles. 669-3.General. 669-5.Branch-Circuit Conductors. 669-6.Wiring Methods. |
| 475 | 669-7.Warning Signs. 669-8.Disconnecting Means. 669-9.Overcurrent Protection. Article 670 – Industrial Machinery 670-1.Scope. 670-2.Definitions. 670-3.Machine Nameplate Data. 670-4.Supply Conductors and Overcurrent Protection. |
| 476 | 670-5.Clearance. Article 675 – Electrically Driven or Controlled Irrigation Machines A.General 675-1.Scope. 675-2.Definitions. 675-3.Other Articles. 675-4.Irrigation Cable. 675-5.More than Three Conductors in a Raceway or Cable. 675-6.Marking on Main Control Panel. |
| 477 | 675-7.Equivalent Current Ratings. 675-8.Disconnecting Means. 675-9.Branch-Circuit Conductors. 675-10.Several Motors on One Branch Circuit 675-11.Collector Rings. 675-12.Grounding. |
| 478 | 675-13.Methods of Grounding. 675-14.Bonding. 675-15.Lightning Protection. 675-16.Energy from More than One Source. 675-17.Connectors. B.Center Pivot Irrigation Machines 675-21.General. 675-22.Equivalent Current Ratings. Article 680 – Swimming Pools, Fountains, and Similar Installations A.General 680-1.Scope. 680-2.Approval of Equipment. 680-3.Other articles. 680-4.Definitions. |
| 479 | 680-5.Transformers and Ground-Fault Circuit Interrupters. |
| 480 | 680-6.Receptacles, Lighting Fixtures, Lighting Outlets, Switching Devices, and C 680-7.Cord- and Plug-Connected Equipment. 680-8.Overhead Conductor Clearances. |
| 481 | 680-9.Electric Pool Water Heaters. 680-10.Underground Wiring Location. 680-11.Equipment Rooms and Pits. 680-12.Disconnecting Means. |
| 482 | B.Permanently Installed Pools 680-20.Underwater Lighting Fixtures. |
| 483 | 680-21.Junction Boxes and Enclosures for Transformers or Ground-Fault Circuit Interrupters. 680-22.Bonding. |
| 484 | 680-23.Underwater Audio Equipment. 680-24.Grounding. 680-25.Methods of Grounding. |
| 486 | 680-26.Electrically Operated Pool Covers. 680-27.Deck Area Heating. 680-28.Double Insulated Pool Pumps. C.Storable Pools 680-30.Pumps. 680-31.Ground-Fault Circuit Interrupters Required. 680-32.Lighting Fixtures. |
| 487 | D.Spas and Hot Tubs 680-38.Emergency Switch for Spas and Hot Tubs. 680-40.Outdoor Installations. 680-41.Indoor Installations. |
| 488 | 680-42.Protection. E.Fountains 680-50.General. 680-51.Lighting Fixtures, Submersible Pumps, and Other Submersible Equipment. |
| 489 | 680-52.Junction Boxes and Other Enclosures. 680-53.Bonding. 680-54.Grounding. 680-55.Methods of Grounding. 680-56.Cord- and Plug-Connected Equipment. 680-57.Signs. F.Pools and Tubs for Therapeutic Use 680-60.General. 680-61.Permanently Installed Therapeutic Pools. |
| 490 | 680-62.Therapeutic Tubs (Hydrotherapeutic Tanks). G.Hydromassage Bathtubs 680-70.Protection. 680-71.Other Electrical Equipment. 680-72.Accessibility. |
| 491 | 680-73.Bonding. Article 685 – Integrated Electrical Systems A.General 685-1.Scope. 685-2.Application of Other Articles. B.Orderly Shutdown 685-10.Location of Overcurrent Devices in or on Premises. 685-12.Direct-Current System Grounding. 685-14.Ungrounded Control Circuits. Article 690 – Solar Photovoltaic Systems A.General 690-1.Scope. 690-2.Definitions. |
| 493 | 690-3.Other Articles. 690-4.Installation. 690-5.Ground-Fault Protection. 690-6.Alternating-Current Modules. |
| 494 | B.Circuit Requirements 690-7.Maximum Voltage. 690-8.Circuit Sizing and Current. 690-9.Overcurrent Protection. |
| 495 | 690-10.Stand-Alone Systems. C.Disconnecting Means 690-13.All Conductors. 690-14.Additional Provisions. 690-15.Disconnection of Photovoltaic Equipment. |
| 496 | 690-16.Fuses. 690-17.Switch or Circuit Breaker. 690-18.Installation and Service of an Array. D.Wiring Methods 690-31.Methods Permitted. 690-32.Component Interconnections. 690-33.Connectors. |
| 497 | 690-34.Access to Boxes. E.Grounding 690-41.System Grounding. 690-42.Point of System Grounding Connection. 690-43.Equipment Grounding. 690-45.Size of Equipment Grounding Conductor. 690-47.Grounding Electrode System. F.Marking 690-51.Modules. 690-52.Alternating-Current Photovoltaic Modules. 690-53.Photovoltaic Power Source. |
| 498 | 690-54.Interactive System Point of Interconnection. G.Connection to Other Sources 690-60.Identified Interactive Equipment. 690-61.Loss of Interactive System Power. 690-62.Ampacity of Neutral Conductor. 690-63.Unbalanced Interconnections. 690-64.Point of Connection. H.Storage Batteries 690-71.Installation. |
| 499 | 690-72.Charge Control. 690-74.Battery Interconnections. I.Systems Over 600 Volts 690-80.General. 690-85.Definitions. Article 695 – Fire Pumps 695-1.Scope. 695-2.Application of Other Articles. 695-3.Power Source(s) for Electric Motor-Driven Fire Pumps. |
| 500 | 695-4.Continuity of Power. |
| 501 | 695-5.Transformers. 695-6.Power Wiring. |
| 502 | 695-7.Voltage Drop. 695-10.Listed Equipment. 695-12.Equipment Location. 695-14.Control Wiring. |
| 503 | CHAPTER 7 Special Conditions Article 700 – Emergency Systems A.General 700-1.Scope. 700-2.Application of Other Articles. 700-3.Equipment Approval. 700-4.Tests and Maintenance. 700-5.Capacity. 700-6.Transfer Equipment. |
| 504 | 700-7.Signals. 700-8.Signs. B.Circuit Wiring 700-9.Wiring, Emergency System. |
| 505 | C.Sources of Power 700-12.General Requirements. |
| 506 | D.Emergency System Circuits for Lighting and Power 700-15.Loads on Emergency Branch Circuits. 700-16.Emergency Illumination. 700-17.Circuits for Emergency Lighting. 700-18.Circuits for Emergency Power. E.Control – Emergency Lighting Circuits 700-20.Switch Requirements. |
| 507 | 700-21.Switch Location. 700-22.Exterior Lights. F.Overcurrent Protection 700-25.Accessibility. 700-26.Ground-Fault Protection of Equipment. Article 701 – Legally Required Standby Systems A.General 701-1.Scope. 701-2.Legally Required Standby Systems. 701-3.Application of Other Articles. 701-4.Equipment Approval. 701-5.Tests and Maintenance for Legally Required Standby Systems. |
| 508 | 701-6.Capacity and Rating. 701-7.Transfer Equipment. 701-8.Signals. 701-9.Signs. B.Circuit Wiring 701-10.Wiring Legally Required Standby Systems. C.Sources of Power 701-11.Legally Required Standby Systems. |
| 509 | D.Overcurrent Protection 701-15.Accessibility. 701-17.Ground-Fault Protection of Equipment. Article 702 – Optional Standby Systems A.General 702-1.Scope. |
| 510 | 702-2.Optional Standby Systems. 702-3.Application of Other Articles. 702-4.Equipment Approval. 702-5.Capacity and Rating. 702-6.Transfer Equipment. 702-7.Signals. 702-8.Signs. B.Circuit Wiring 702-9.Wiring Optional Standby Systems. Article 705 – Interconnected Electric Power Production Sources 705-1.Scope. 705-2.Definition. 705-3.Other Articles. 705-10.Directory. |
| 511 | 705-12.Point of Connection. 705-14.Output Characteristics. 705-16.Interrupting and Short-Circuit Current Rating. 705-20.Disconnecting Means, Sources. 705-21.Disconnecting Means, Equipment. 705-22.Disconnect Device. 705-30.Overcurrent Protection. 705-32.Ground-Fault Protection. 705-40.Loss of Primary Source. |
| 512 | 705-42.Unbalanced Interconnections. 705-43.Synchronous Generators. 705-50.Grounding. Article 720 – Circuits and Equipment Operating at Less than 50 Volts 720-1.Scope. 720-2.Hazardous (Classified) Locations. 720-4.Conductors. 720-5.Lampholders. 720-6.Receptacle Rating. 720-7.Receptacles Required. 720-8.Overcurrent Protection. 720-9.Batteries. 720-10.Grounding. 720-11.Mechanical Execution of Work. Article 725 – Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits A.General 725-1.Scope. 725-2.Definitions. |
| 513 | 725-3.Locations and Other Articles. 725-5.Access to Electrical Equipment Behind Panels Designed to Allow Access. 725-6.Class 1, Class 2, and Class 3 Circuit Grounding. 725-7.Mechanical Execution of Work. 725-8.Safety-Control Equipment. 725-15.Class 1, Class 2, and Class 3 Circuit Requirements. B.Class 1 Circuits 725-21.Class 1 Circuit Classifications and Power Source Requirements. |
| 514 | 725-23.Class 1 Circuit Overcurrent Protection. 725-24.Class 1 Circuit Overcurrent Device Location. 725-25.Class 1 Circuit Wiring Methods. 725-26.Conductors of Different Circuits in Same Cable, Enclosure, or Raceway. |
| 515 | 725-27.Class 1 Circuit Conductors. 725-28.Number of Conductors in Cable Trays and Raceway, and Derating. 725-29.Circuits Extending Beyond One Building. C.Class 2 and Class 3 Circuits 725-41.Power Sources for Class 2 and Class 3 Circuits. |
| 516 | 725-51.Wiring Methods on Supply Side of the Class 2 or Class 3 Power Source. 725-52.Wiring Methods and Materials on Load Side of the Class 2 or Class 3 Power 725-54.Installation of Conductors and Equipment. |
| 518 | 725-61.Applications of Listed Class 2, Class 3, and PLTC Cables. |
| 519 | 725-71.Listing and Marking of Class 2, Class 3, and Type PLTC Cables. |
| 520 | Article 727 – Instrumentation Tray Cable: Type ITC 727-1.Scope. 727-2.Definition. 727-3.Other Articles. 727-4.Uses Permitted. |
| 521 | 727-5.Uses Not Permitted. 727-6.Construction. 727-7.Marking. 727-8.Allowable Ampacity. 727-9.Overcurrent Protection. 727-10.Bends. Article 760 – Fire Alarm Systems A.General 760-1.Scope. 760-2.Definitions. 760-3.Locations and Other Articles. |
| 522 | 760-5.Access to Electrical Equipment Behind Panels Designed to Allow Access. 760-6.Fire Alarm Circuit and Equipment Grounding. 760-7.Fire Alarm Circuits Extending Beyond One Building. 760-8.Mechanical Execution of Work. 760-10.Fire Alarm Circuit Identification. 760-15.Fire Alarm Circuit Requirements. B.Nonpower-Limited Fire Alarm (NPLFA) Circuits 760-21.NPLFA Circuit Power Source Requirements. 760-23.NPLFA Circuit Overcurrent Protection. 760-24.NPLFA Circuit Overcurrent Device Location.Ã |
| 523 | 760-25.NPLFA Circuit Wiring Methods. 760-26.Conductors of Different Circuits in Same Cable, Enclosure, or Raceway. 760-27.NPLFA Circuit Conductors. 760-28.Number of Conductors in Cable Trays and Raceways, and Derating. 760-30.Multiconductor NPLFA Cables. |
| 524 | 760-31.Listing and Marking of NPLFA Cables. |
| 525 | C.Power-Limited Fire Alarm (PLFA) Circuits 760-41.Power Sources for PLFA Circuits. 760-42.Circuit Marking. 760-51.Wiring Methods on Supply Side of the PLFA Power Source. 760-52.Wiring Methods and Materials on Load Side of the PLFA Power Source. |
| 526 | 760-54.Installation of Conductors and Equipment. |
| 527 | 760-55.Current-Carrying Continuous Line-Type Fire Detectors. 760-61.Applications of Listed PLFA Cables. |
| 528 | 760-71.Listing and Marking of PLFA Cables and InsuÃlated Continuous Line-Type Fire Detectors. |
| 529 | Article 770 – Optical Fiber Cables and Raceways A.General 770-1.Scope. 770-2.Definitions. 770-3.Locations and Other Articles. 770-4.Optical Fiber Cables. 770-5.Types. |
| 530 | 770-6.Raceways for Optical Fiber Cables. 770-7.Access to Electrical Equipment Behind Panels Designed to Allow Access. 770-8.Mechanical Execution of Work. B.Protection 770-33.Grounding of Entrance Cables. C.Cables Within Buildings 770-49.Fire Resistance of Optical Fiber Cables. 770-50.Listing, Marking, and Installation of Optical Fiber Cables. |
| 531 | 770-51.Listing Requirements for Optical Fiber Cables and Raceways. 770-52.Installation of Optical Fibers and Electrical Conductors. |
| 532 | 770-53.Applications of Listed Optical Fiber Cables and Raceways. |
| 533 | Article 780 – Closed-Loop and Programmed Power Distribution 780-1.Scope. 780-2.General. 780-3.Control. 780-5.Power Limitation in Signaling Circuits. 780-6.Cables and Conductors. 780-7.Noninterchangeability. |
| 534 | CHAPTER 8 Communications Systems Article 800 – Communications Circuits A.General 800-1.Scope. 800-2.Definitions. 800-3.Hybrid Power and Communications Cables. 800-4.Equipment. 800-5.Access to Electrical Equipment Behind Panels Designed to Allow Access. 800-6.Mechanical Execution of Work. 800-7.Hazardous (Classified) Locations. B.Conductors Outside and Entering Buildings 800-10.Overhead Communications Wires and Cables. |
| 535 | 800-11.Underground Circuits Entering Buildings. 800-12.Circuits Requiring Primary Protectors. |
| 536 | 800-13.Lightning Conductors. C.Protection 800-30.Protective Devices. |
| 537 | 800-31.Primary Protector Requirements. 800-32.Secondary Protector Requirements. 800-33.Cable Grounding. D.Grounding Methods 800-40.Cable and Primary Protector Grounding. |
| 538 | 800-41.Primary Protector Grounding and Bonding at Mobile Homes. E.Communications Wires and Cables Within Buildings 800-48.Raceways for Communications Wires and Cables. 800-49.Fire Resistance of Communications Wires and Cables. 800-50.Listing, Marking, and Installation of Communications Wires and Cables. |
| 539 | 800-51.Listing Requirements for Communications Wires and Cables and Communications Raceways. |
| 540 | 800-52.Installation of Communications Wires, Cables, and Equipment. |
| 541 | 800-53.Applications of Listed Communications Wires and Cables, and Communications Raceways. |
| 542 | Article 810 – Radio and Television Equipment A.General 810-1.Scope. 810-2.Other Articles. 810-3.Community Television Antenna. 810-4.Radio Noise Suppressors. 810-5.Definitions. |
| 543 | B.Receiving Equipment – Antenna Systems 810-11.Material. 810-12.Supports. 810-13.Avoidance of Contacts with Conductors of Other Systems. 810-14.Splices. 810-15.Grounding. 810-16.Size of Wire-Strung Antenna – Receiving Station. 810-17.Size of Lead-in – Receiving Station. 810-18.Clearances – Receiving Stations. |
| 544 | 810-19.Electric Supply Circuits Used in Lieu of Antenna – Receiving Stations. 810-20.Antenna Discharge Units – Receiving Stations. 810-21.Grounding Conductors Receiving Stations. |
| 545 | C.Amateur Transmitting and Receiving Stations – Antenna Systems 810-51.Other Sections. 810-52.Size of Antenna. 810-53.Size of Lead-in Conductors. 810-54.Clearance on Building. 810-55.Entrance to Building. 810-56.Protection Against Accidental Contact. 810-57.Antenna Discharge Units – Transmitting ÃStations. 810-58.Grounding Conductors – Amateur Transmitting and Receiving Stations. D.Interior Installation – Transmitting Stations 810-70.Clearance from Other Conductors. |
| 546 | 810-71.General. Article 820 – Community Antenna Television and Radio Distribution Systems A.General 820-1.Scope. 820-2.Definitions. 820-3.Locations and Other Articles. 820-4.Energy Limitations. 820-5.Access to Electrical Equipment Behind Panels Designed to Allow Access. 820-6.Mechanical Execution of Work. B.Cables Outside and Entering Buildings 820-10.Outside Cables. |
| 547 | 820-11.Entering Buildings. C.Protection 820-33.Grounding of Outer Conductive Shield of a Coaxial Cable. |
| 548 | D.Grounding Methods 820-40.Cable Grounding. 820-41.Equipment Grounding. 820-42.Bonding and Grounding at Mobile Homes. |
| 549 | E.Cables Within Buildings 820-49.Fire Resistance of CATV Cables. 820-50.Listing, Marking, and Installation of Coaxial Cables. 820-51.Additional Listing Requirements. 820-52.Installation of Cables and Equipment. |
| 550 | 820-53.Applications of Listed CATV Cables. |
| 551 | Article 830 – Network-Powered Broadband Communications Systems A.General 830-1.Scope. 830-2.Definitions. |
| 552 | 830-3.Locations and Other Articles. 830-4.Power Limitations. 830-5.Network-Powered Broadband Communications Equipment and Cables. |
| 553 | 830-6.Access to Electrical Equipment Behind Panels Designed to Allow Access. 830-7.Mechanical Execution of Work. 830-8.Hazardous (Classified) Locations. B.Cables Outside and Entering Buildings 830-9.Entrance Cables. 830-10.Aerial Cables. |
| 555 | 830-11.Underground Circuits Entering Buildings. C.Protection 830-30.Primary Electrical Protection. |
| 557 | 830-33.Grounding or Interruption of Metallic Members of Network-Powered Broadband Communications Cables. D.Grounding Methods 830-40.Cable, Network Interface Unit, and Primary Protector Grounding. |
| 558 | 830-42.Bonding and Grounding at Mobile Homes. E.Network-Powered Broadband Communications SysÃtems Wiring Methods Within Buildi 830-54.Medium Power Network-Powered Broadband Communications System Wiring Methods Within Buildings. |
| 559 | 830-55.Low Power Network-Powered Broadband ComÃmunications System Wiring Methods. 830-56.Protection Against Physical Damage. 830-57.Bends. 830-58.Installation of Network-Powered Broadband Communications Cables and Equipment. |
| 561 | CHAPTER 9 Tables |
| 571 | APPENDIX A Extract References |
| 574 | APPENDIX B B-310-15(b)(1).Formula Application Information. B-310-15(b)(2).Typical Applications Covered by Tables. B-310-15(b)(3).Criteria Modifications. B-310-15(b)(4).Electrical Ducts. B-310-15(b)(5).Tables B-310-6 and B-310-7. B-310-15(b)(6).Electrical Ducts Utilized in Figure B-310-2. B-310-15(b)(7).Examples Showing Use of Figure B-310-1 for Electrical Duct Bank Ampacity Modifications. |
| 583 | APPENDIX C Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the same Size |
| 607 | APPENDIX D |
| 615 | APPENDIX E Article 250 Cross Reference E2.�Cross Reference from the 1996 NEC to the 1999 NEC |
| 616 | E2.�Cross Reference from the 1996 NEC to the 1999 NEC |
| 618 | INDEX |
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