October 15, 2010—The National Electrical Manufacturers Association (NEMA) has published several standards and publications in recent weeks pertaining to various electrical issues, including transmission corridors for renewable energy, electricity meters, motors and generators, LFNC wiring systems, and steel poles used in outdoor applications.
- Siting Transmission Corridors is a roadmap that explores the intricacies of the administrative processes involved in connecting renewable energy sources to the electrical grid. Transmission corridors are the land over which wires and other connections traverse, explains NEMA. They are the means by which traditional and renewable energy sources will be transported from remote locations to areas where energy is needed.
- The updated ANSI C12.20-2010 American National Standard for Electricity Meters—0.2 and 0.5 Accuracy Classes, last published in 2002, establishes acceptable performance criteria for electricity meters.
- The updated NEMA MG 1-2009, Revision 1-2010 Motors and Generators, which is frequently revised to reflect changes in technology, is the definitive standard for practical information concerning performance, safety, testing, construction, and manufacture of alternating-current and direct-current motors and generators. It provides access to testing and dimensional and application criteria relative to rotating machinery for both manufacturers and users of motors and generators.
- The updated RV 3-2010 Application and Installation Guidelines for Flexible and Liquidtight Flexible Metal and Nonmetallic Conduits, last published in 2006, is a concise reference guide to all articles of the National Electrical Code relevant to Liquidtight Flexible Nonmetallic Conduit (LFNC) wiring systems, covering critical installation aspects of LFNC. It is written mainly for installers and authorities.
- ANSI C136.36C-2010 American National Standard for Roadway and Area Lighting Equipment—Steel Roadway and Area Lighting Poles is a new standard that provides construction and performance guidance for steel poles used in outdoor applications. It can help city and roadway planners decide whether to use steel poles for a given application.
- The updated ANSI C12.20-2010 American National Standard for Electricity Meters—0.2 and 0.5 Accuracy Classes, last published in 2002, establishes acceptable performance criteria for electricity meters.
