The Association of Electrical Equipment and Medical Imaging Manufacturers
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This web page offers Building Code Officials, Electrical Inspectors, and others the capability to view NEMA standards, guides, white papers, and Engineering Bulletins covering NEMA products ranging from Adjustable Speed Drive Systems to recommendations for Handling Water-Damaged Electrical Equipment. All of these documents are available for free download for printing or for saving as a file for future use. The web page also provides several useful links to:

  • NEMA standards that are available for purchase,
  • NEMA’s Field Representative Program, and
  • websites for other organizations that may be of interest.

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NEMA Materials

Other Resources

NEMA Field Representatives serve NEMA members by promoting the use and adoption of the National Electrical Code® (NEC®) and by monitoring regional developments of importance to the electroindustry.

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Arc Flash

Standards

Guides and White Papers

Arc-Flash Analysis—Utility System Parameters Critical for Accurate PPE
Avoid Arc Flash Occurrences by Following Industry Standards

Automation and Motor Control

Standards

Guides and White Papers

Adjustable Speed Electrical Power Drive Systems, Part 1: General Requirements—Rating Specifications for Low Voltage Adjustable Speed D.C. Power Drive Systems Application Guide for AC Adjustable Speed Drive Systems

Electrical Installation

Standards

Guides and White Papers

Engineering Series Ratings: Is It Practical?
Evaluating Water-Damaged Electrical Equipment
Multiple Knockouts
Knockout Diameters and Fitting Dimensions to Assure Mechanical and Electrical Continuity
Hazards of Working Electrical Equipment Hot
Electrical Installation Requirements: A Global Perspective
A Brief Comparison of NEMA 250 and IEC 60529

Enclosures

Standards

Guides and White Papers

NEMA Enclosure Types
A Brief Comparison of NEMA 250 and IEC 60529

Exit Signs

Standards

Guides and White Papers

Exit Sign Brightness for Visibility & Safety

Industrial Control and Systems

Standards

Guides and White Papers

Industrial Control and Systems: General Requirements

Industrial Control and Systems: Safety Guidelines for the Application, Installation, and Maintenance of Solid State Controls
Industrial Control and Systems: Preventive Maintenance of Industrial Control and Systems Equipment
Industrial Control and Systems Part 1: Electromechanical AC Transfer Switch Equipment
Industrial Control and Systems: AC Transfer Equipment — Part 2: Static AC Transfer Equipment
Industrial Control and Systems: Profiles of Networked Industrial Devices—Part 1: General Rules
Industrial Control and Systems: Application Guide for Electric Fire Pump Controllers
Industrial Control and Systems: Instructions for the Handling, Installation, Operation, and Maintenance of Electric Fire Pump Controllers Rated Not More than 600V
Industrial Control and Systems: Motion/Position Control Motors, Controls, and Feedback Devices
Industrial Control and Systems: Motor Control Centers
Industrial Control and Systems: Diagrams, Device Designations, and Symbols
AC Vaccum-Break Magnetic Controllers Rated 1500 Volts AC
Industrial Control and Systems: Controllers, Contactors, and Overload Relays, Rated Not More Than 2000 Volts AC or 750 Volts DC: Part 8 - Disconnect Devices for Use in Industrial Control Equipment
Industrial Control and Systems: Controllers, Contactors, and Overload Relays Rated 600 Volts
Industrial Control and Systems: Instructions for the Handling, Installation, Operation, and Maintenance of Motor Control Centers Rated Not More than 600 Volts
NEMA and IEC Devices for Motor Service—A Guide for Understanding the Differences
Industrial Control and Systems: Medium Voltage Controllers Rated 2001 to 7200 Volts AC
Industrial Control and Systems: Handling, Storage, and Installation Guide for AC General-Purpose Medium Voltage Contactors and Class E Controllers, 50 and 60 Hertz
Industrial Control and Systems: Terminal Blocks
Industrial Control and Systems: Typical Proximity Switch Specifications
Industrial Control and Systems: Additional Requirements for Proximity Switches Suitable for Use in Strong Magnetic Fields
Industrial Control and Systems: High Pressure Power Wash Test Procedure for Self-Contained Control-Circuit Devices
Application Information for Limit Switches
Industrial Control and Systems: Control Circuit and Pilot Devices
Industrial Control and Systems: Enclosures
Adjustable Speed Electrical Power Drive Systems, Part 2: General Requirements--Rating Specifications for Low Voltage Adjustable Frequency A.C. Power Drive Systems
Adjustable Speed Electrical Power Drive Systems: Part 4: General Requirements--Rating Specifications for A.C. Power Drive Systems Above 1000 V A.C. and not Exceeding 35 kV
Industrial Control and Systems: Adjustable-Speed Drives
Safety Standards for Construction and Guide for Selection, Installation, and Operation of Adjustable-Speed Drive Systems

Lamps and Lighting Systems

Standards

Guides and White Papers
NEMA - Tungsten-Halogen Lamps (Bulbs): Ultraviolet, Rupture, and High Temperature Risks White Paper on Outdoor Lighting Issues
Wiring Requirements for T-8 Lamps with Instant-Start Ballasts Green Marking of Lamps
NEMA - Wiring Requirements for 2G11 Based T-5 Fluorescent Twin Lamps With Instant-Start Ballasts Recommendations for the Care and Maintenance of High Intensity Metal Halide and Mercury Lighting in Schools
Interaction of Infrared Controls and Electronic Compact Fluorescent Lamps NEMA Guide to Lighting Controls
Glossary of Terms Pertaining To Remote Illumination Systems The Labeling of Mercury Containing Lamps
34 Watt Fluorescent Lamps And High Frequency Electronic Ballasts Fluorescent Lamps and the Environment
Interaction of Infrared Controls and Fluorescent Lamp/Ballast Systems in Education Facilities Impact of Mercury Legislation on the Lighting Industry
Ultraviolet Radiation From Fluorescent Lamps Manufacturer Take Back of Lamps
Compact Fluorescent Lamps In Residences – Power Quality Implications Pin Based Compact Fluorescent Lamps
Compatibility of Add-on Tube Guards with T-8 Fluorescent Lamps Operating on High Frequency Electronic Ballasts Alternatives to Mercury-Containing Light Solutions
A Guide for the Safe Use of Remote Illumination Systems Equipment, Including a Glossary of Definitions Electronic Ballast / Lighting Controls Compatibility Concerns Associated with Inrush Currents
Guidelines on the Application of Dimming to High Intensity Discharge Lamps
Radioactive Substances In Compact Fluorescent Lamps
Consumer Guide for Four-Foot Fluorescent Bulbs
Compatibility of Fluorescent Lamps and Electronic Ballasts in Frequently Switched Applications

Low Voltage Distribution Equipment

Standards

Guides and White Papers

General Instructions for Proper Handling, Installation, Operation, and Maintenance of Busway Rated 600 Volts or Less Molded-Case Circuit Breakers Reduce Arc Flash Hazard Impact
Instrucciones Generales Para el Manejo, Instalacion, Operacion y Mantenimiento de Electroductos Hasta 600 Volts Nominales o Menos
Application Information for Busway Rated 600 Volts or Less
Panelboards
General Instructions for Proper Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less
Instrucciones Generales Para la Instalacion, Operacion y El Mantenimiento Correcto de Tableros de Alumbrado y Control Hasta 600 Volts Nominales o Menos
Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts Maximum)
Molded Case Circuit Breakers and their Application
Guidelines for Inspection and Preventive Maintenance of Molded Case Circuit Breakers Used in Commercial and Industrial Applications

Miscellaneous

Standards

Guides and White Papers

Safety Guide for Use of Extension Cords
User Input to NEMA Standards (Guidelines for NEMA Subdivisions)
Guidelines for Metric Conversion of NEMA Standards
FCC Regulations Applicable to NEMA Products
Phantom Voltages
NEMA Policy on Adoption of the National Electrical Code
Knockout Diameters and Fitting Dimensions to Assure Mechanical and Electrical Continuity
The Strengths of an Effective Electrical Safety System
NEMA Analysis of the Energy Policy Act of 1992: The Scope of Electric Motors Subject to Efficiency Standards on October 24, 1997
Guide to Preparing a Design Proposal for Paralleling Customer Generation with an Electric Utility

Motors

Standards

Guides and White Papers

Information Guide for General Purpose Industrial AC Small and Medium Squirrel-Cage Induction Motor Standards Type 2 Motor Starter Protection Guide
Energy Management Guide for Selection and Use of Fixed Frequency Medium AC Squirrel-Cage Polyphase Induction Motors
Energy Management Guide for Selection and Use of Single Phase Motors

Residential Controls

Standards

Guides and White Papers

Residential Controls—Class 2 Transformers
Residential Controls—Electrical Wall-Mounted Room Thermostats
Residential Controls—Surface-Type Controls for Electric Storage Water Heaters
Residential Controls—Temperature Limit Controls for Electric Baseboard Heaters
Residential Controls: Hot Water Immersion Controls
Residential Controls: Line Voltage Integrally Mounted Thermostats for Electric Heaters

Smoke Alarms, CO Detectors

Standards Guides and White Papers
Fire and Carbon Monoxide Safety Recommendations
Guide for Proper Use of System Smoke Detectors
NEMA Position on Compatibility between Smoke Alarms and AFCIs
Quality Informational Guide for Automatic Fire Detection and Alarm Systems

Wiring Systems

Selection and Installation Guidelines for Fittings for Use with Non-flexible Electrical Metal Conduit or Tubing (Rigid Metal Conduit, Intermediate Metal Conduit, and Electrical Metallic Tubing) Cable Tray Span Specification
Selection and Installation Guidelines For Fittings for Use With Flexible Electrical Conduit and Cable Use of Anti-Short Bushings for Terminating Type MC Cables
Selection and Installation Guidelines for Electrical Outlet Boxes NEMA Termination of Bonding Strip on Type AC Cable
Application and Installation Guidelines for Armored Cable and Metal-Clad Cable Use of Type NM-B Cable for Wiring of Residential Lighting Fixtures
Application and Installation Guidelines for Nonmetallic-Sheathed Cables Length Limitations for FMC and LFMC.
Application and Installation Guidelines for Flexible and Liquidtight Flexible Metal Conduit Expansion Joints for PVC Rigid Nonmetallic Conduit
Fiberglass Cable Tray Systems User Guide to Product Specifications for Electrical Building Wire and Cable
Metal Cable Tray Installation Guidelines User Guide to Product Specifications for Metal Electrical Conduit and Tubing
Conduit-in-Casing Construction
Solvent-Cementing Joints for PVC Rigid Nonmetallic Conduit, Duct, and Fittings