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NEMA

NEMA is the trade association of choice for the electrical manufacturing industry. Founded in 1926 and headquartered near Washington, D.C., its approximately 450 member companies manufacture products used in the generation, transmission and distribution, control, and end-use of electricity.


Articles

Adoption of 2008 National Electrical Code Gains Momentum

Public officials in several states have embraced new safety standards, voting to adopt the 2008 National Electrical Code® (NEC) with minimal or no amendments, and America’s heartland has taken the lead on acceptance.
JULY-AUGUST 2008

The NEMA Field Representatives Program: Helping Inspectors Meet Their Goals

The National Electrical Manufacturers Association Field Representatives Program promotes the use and adoption of the National Electrical Code and monitors regional developments of importance to the electrical manufacturing industry. Electrical inspectors can rely on the field representatives’ expertise to interpret how the Code applies to specific installations and to provide a direct link to manufacturers, which is critical to getting quick resolution on installation-related issues. Philip Cox, retired IAEI chief executive officer and executive director, as well as a former NEMA field representative, said one of the best attributes of the field representative is the ability to resolve problems between manufacturers and electrical inspectors.
SEPTEMBER-OCTOBER 2005

Engineering Series Rating: Is It Practical?

The 2005 National Electrical Code introduces a change regarding series ratings for circuit breakers that deserves careful review before applying an engineered series rating. The additional paragraph 240.86 (A) reads...
SEPTEMBER-OCTOBER 2005

Limited-Service Controllers

Limited-service controllers (LSC) are used as fire pump controllers within defined limits and restricted performance. LSCs are permitted in fire protection applications in instances where cost is a major factor and, if not permissible, would most likely result in the decision not to have any fire pump. They have been used in some nursing homes, day care centers, larger private homes, and similar small premises. LSCs were added to NFPA 20 Standard for the Installation of Stationary Pumps for Fire Protection after a serious fire in Chicago more than 40 years ago where testimony showed that the loss of life could have been lessened had a fire pump been placed in service.
MARCH-APRIL 2005

Molded-Case Circuit Breaker – Individual Pole Interrupting Capability

The 2002 National Electrical Code (NEC) has an added notation that can be confusing. The notion is a fine print note (FPN) to 240.85 of the NEC that reads, "Proper application of molded-case circuit breakers on 3-phase systems, other than solidly grounded WYE, particularly on corner-grounded delta systems, considers the individual pole interrupting capability.” A FPN is non-mandatory information according to 90.5 of the NEC. This document will explore its meaning.
MAY-JUNE 2002

Check and Be Sure of GFCI Safety Protection

"A safety revolution is underway in the electrical wiring of buildings,” writes Earl Roberts in his book Overcurrents and Undercurrents.1 He is writing about the use of electronics in circuit protection and specifically in the ground-fault circuit interrupter (GFCI). Just as electronics have enhanced the world of consumer appliances and communication, the use of electronics in the GFCI has resulted in a significant improvement in the safety of electrical systems.
JANUARY-FEBRUARY 2000

Taking the Guesswork out of Selecting and Maintaining Molded Case Circuit Breakers

The National Electrical Manufacturers Association has just what you need to answer your circuitbreaker application and preventive maintenance questions. NEMA publishes two standards that provide a wealth of information to help users and specifiers select and maintain circuit breakers.
MARCH-APRIL 1999