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About This Item

 

Full Description

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).
 

Document History

  1. NECA 409-2015


    Standard for Installing and Maintaining Dry-Type Transformers

    • Most Recent
  2. NECA 409-2009

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    Standard for Installing and Maintaining Dry-Type Transformers

    • Historical Version