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NECA 409-2009
- Standard for Installing and Maintaining Dry-Type Transformers
- standard by National Electrical Contractors Association, 2009
- Publisher: NECA
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Describes installation and maintenance practices for dry-type, two-winding transformers used for supplying power, heating, and lighting loads for commercial, institutional, and industrial use in nonhazardous locations, both indoors and outdoors. NECA 409 is approved as an American National Standard (ANS).
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