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DRAFTOFPROPOSED NFPA 70 2014 EditionNational Electrical Code Note: Copies of proposals are published in the NEC ROP forthe 2013 Annual Revision Cycle.The following draft of NFPA 70 , National Electrical Code ,2014, incorporates the committee actions on the public andcommittee proposals that make up the A2013 NEC Report onProposals. The draft is presented only as an aid to the reviewer.NFPA1 BATTERYMARCH PARK, QUINCY, MA 02169-7471Copyright 2012 All Rights Reserved

CONTENTSContentsARTICLEARTICLE90Chapter 1 General100Definitions . 70– 27I. General . 70– 27II. Over 600 Volts, Nominal . 70– 35Requirements for Electrical Installations . 70– 36General .600 Volts, Nominal, or Less .Over 600 Volts, Nominal .Tunnel Installations over 600 Volts,Nominal .V. Manholes and Other ElectricalEnclosures Intended for PersonnelEntry, All Voltages .I.II.III.IV.70– 4670– 47Use and Identification of GroundedConductors . 70– 49210Branch Circuits . 70– 51I. General Provisions . 70– 51II. Branch-Circuit Ratings . 70– 57III. Required Outlets . 70– 59215Feeders . 70– 64220Branch-Circuit, Feeder, and ServiceCalculations . 70– 6628028570–70–Outside Branch Circuits and Feeders . 70–I. General . 70–73757676Services . 70– 83General .Overhead Service Conductors .Underground Service Conductors .Service-Entrance Conductors .Service Equipment — General .Service Equipment — DisconnectingMeans .VII. Service Equipment — OvercurrentProtection .VIII. Services Exceeding 1000 Volts,Nominal .I.II.III.IV.V.VI.240Overcurrent Protection .I. General .II. Location .III. Enclosures ��13570–13770–137Surge Arresters, Over 1000 Volts . 70–14170–70–70–70–70–8385868789Chapter 3 Wiring Methods300General Requirements for WiringMethods and Materials . 70–144I. General Requirements . 70–144II. Requirements for over 1000 Volts,Nominal . 70–154310Conductors for General Wiring . 70–157I. General . 70–157II. Installation . 70–157III. Construction Specifications . 70–17731270– 90Cabinets, Cutout Boxes, and Meter SocketEnclosures . 70–183I. Scope and Installation . 70–183II. Construction Specifications . 70–18570– 9270– 9370– 9470– 9470– 9870–101Surge-Protective Devices (SPDs), 1000Volts or Less . 70–142I. General . 70–142II. Installation . 70–143III. Connecting SPDs . 70–143II. Buildings or Other Structures Suppliedby a Feeder(s) or Branch Circuit(s) . 70– 79III. Over 1000 Volts. [ROP 4–67] . 70– 8123070–10770–110I. General . 70–141II. Installation . 70–141III. Connecting Surge Arresters . 70–14170– 6670– 6770– 69DRGeneral .Branch-Circuit Load Calculations .Feeder and Service Load Calculations .Optional Feeder and Service LoadCalculations .V. Farm Load Calculations .225I. General .II. System Grounding .III. Grounding Electrode System andGrounding Electrode Conductor .IV. Enclosure, Raceway, and ServiceCable Connections .V. Bonding .VI. Equipment Grounding and EquipmentGrounding Conductors .VII. Methods of Equipment Grounding .VIII. Direct-Current Systems .IX. Instruments, Meters, and Relays .X. Grounding of Systems and Circuits ofover 1000 Volts .70–106Grounding and Bonding . 70–107AF200I.II.III.IV.25070– 3670– 4070– 42Chapter 2 Wiring and T110Disconnecting and Guarding .Plug Fuses, Fuseholders, and Adapters .Cartridge Fuses and Fuseholders .Circuit Breakers .Supervised Industrial Installations .Overcurrent Protection Over 1000Volts, Nominal .IV.V.VI.VII.VIII.IX.Introduction . 70– 23314Outlet, Device, Pull, and Junction Boxes;Conduit Bodies; Fittings; and HandholeEnclosures . 70–187I. Scope and General . 70–187II. Installation . 70–187III. Construction Specifications . 70–194NATIONAL ELECTRICAL CODE2014 Edition

CONTENTSARTICLE320ARTICLEIV. Pull and Junction Boxes, ConduitBodies, and Handhole Enclosures forUse on Systems over 1000 Volts,Nominal . 70–195342Armored Cable: Type AC . 70–196344I. General . 70–212II. Installation . 70–212III. Construction Specifications . 70–214I. General . 70–196II. Installation . 70–196III. Construction Specifications . 70–197322Flat Cable Assemblies: Type FC . 70–198I. General . 70–198II. Installation . 70–198III. Construction . 70–198324326348I. General . 70–216II. Installation . 70–216Liquidtight Flexible Metal Conduit: TypeLFMC . 70–217I. General . 70–199II. Installation . 70–199III. Construction . 70–200I. General . 70–217II. Installation . 70–217III. Construction Specifications . 70–219Integrated Gas Spacer Cable: Type IGS . 70–201350352340TDR354355I. General . 70–211II. Installation . 70–211III. Construction Specifications . 70–2122014 EditionNATIONAL ELECTRICAL CODEReinforced Thermosetting Resin Conduit:Type RTRC . 70–224I. General . 70–224II. Installation . 70–224III. Construction Specifications . 70–226356Liquidtight Flexible Nonmetallic Conduit:Type LFNC . 70–227I. General . 70–227II. Installation . 70–227III. Construction Specifications . 70–228358Electrical Metallic Tubing: Type EMT . 70–228I. General . 70–228II. Installation . 70–229III. Construction Specifications . 70–230Service-Entrance Cable: Types SE andUSE . 70–210Underground Feeder and Branch-CircuitCable: Type UF . 70–211Nonmetallic Underground Conduit withConductors: Type NUCC . 70–223I. General . 70–223II. Installation . 70–223III. Construction Specifications . 70–224Power and Control Tray Cable: Type TC . 70–209I. General . 70–210II. Installation . 70–210III. Construction . 70–211High Density Polyethylene Conduit: TypeHDPE Conduit . 70–222I. General . 70–222II. Installation . 70–222III. Construction Specifications . 70–223Nonmetallic-Sheathed Cable: Types NM,NMC, and NMS . 70–206I. General . 70–209II. Installation . 70–209III. Construction Specifications . 70–210338353Mineral-Insulated, Metal-Sheathed Cable:Type MI . 70–205I. General . 70–206II. Installation . 70–206III. Construction Specifications . 70–208336I. General . 70–219II. Installation . 70–219III. Construction Specifications . 70–221Metal-Clad Cable: Type MC . 70–203I. General . 70–205II. Installation . 70–205III. Construction Specifications . 70–206334Rigid Polyvinyl Chloride Conduit: TypePVC . 70–219AFMedium Voltage Cable: Type MV . 70–202I. General . 70–203II. Installation . 70–203III. Construction Specifications . 70–204332Flexible Metal Conduit: Type FMC . 70–216Flat Conductor Cable: Type FCC . 70–199I. General . 70–202II. Installation . 70–202III. Construction Specifications . 70–203330Rigid Metal Conduit: Type RMC . 70–214I. General . 70–214II. Installation . 70–214III. Construction Specifications . 70–216I. General . 70–201II. Installation . 70–201III. Construction Specifications . 70–201328Intermediate Metal Conduit: Type IMC . 70–212360Flexible Metallic Tubing: Type FMT . 70–230I. General . 70–230II. Installation . 70–230III. Construction Specifications . 70–231362Electrical Nonmetallic Tubing: Type ENT . 70–231I. General . 70–231II. Installation . 70–231III. Construction Specifications . 70–23370–3

CONTENTSARTICLE366ARTICLEAuxiliary Gutters . 70–233393I. General . 70–233II. Installation . 70–234III. Construction Specifications . 70–235Busways . 70–235I.II.III.IV.370General Requirements .Installation .Construction .Requirements for Over 600 Volts,Nominal .70–23570–23570–23770–237372Cellular Concrete Floor Raceways . 70–239374Cellular Metal Floor Raceways . 70–240I. Installation . 70–240II. Construction Specifications . 70–241Metal Wireways . 70–241380I. General . 70–261II. Installation . 70–261III. Construction Specifications . 70–262396398399Chapter 4 Equipment for General Use400I. General . 70–266II. Construction Specifications . 70–276III. Portable Cables Over 600 Volts,Nominal . 70–277Fixture Wires . 70–278Multioutlet Assembly . 70–244404Switches . 70–282DRNonmetallic Extensions . 70–245I. Installation . 70–282II. Construction Specifications . 70–286406Receptacles, Cord Connectors, andAttachment Plugs (Caps) . 70–286408Switchboards, Switchgear, andPanelboards . 70–290I.II.III.IV.Strut-Type Channel Raceway . 70–247409Surface Nonmetallic Raceways . 70–249390Underfloor Raceways . 70–250392Cable Trays . 70–251I. General . 70–251II. Installation . 70–251III. Construction Specifications . 70–258Ge

PROPOSED NFPA 70 2014 Edition National Electrical Code Note: Copies of proposals are published in the NEC ROP for the 2013 Annual Revision Cycle. The following draft of NFPA 70 , National Electrical Code , 2014, incorporates the committee actions on the public and committee proposals that make up the A2013 NEC Report on Proposals. The draft is presented only as an aid to the reviewer .