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NECA 409-2002

Standard for Installing and Maintaining Dry-Type Transformers (ANSI)

This standard applies to general purpose, dry-type, two-winding transformers and lighting loads for commercial, institutional, and industrial use in nonhazardous locations both indoors and outdoors. It also covers periodic routine maintenance and troubleshooting procedures for transformers, and special procedures used after adverse operating conditions such as a short-circuit, ground-fault, or immersion in water.

Content Provider
National Electrical Contractors Association [neca]

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Document History
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Included in Packages
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Amendments & Corrections
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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.