U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 10Chapter IIPart 431Subpart K - Subpart K—Distribution Transformers

TEST PROCEDURES
§ 431.193 - Test procedure for measuring energy consumption of distribution transformers.
§ 431.191 - Purpose and scope.
§ 431.192 - Definitions.

ENERGY CONSERVATION STANDARDS
§ 431.196 - Energy conservation standards and their effective dates.

COMPLIANCE AND ENFORCEMENT
Appendix Appendix A - Appendix A to Subpart K of Part 431—Uniform Test Method for Measuring the Energy Consumption of Distribution Transformers
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