CFR›Title 10›Chapter II›Part 431›Subpart K›Subject Group Compliance and Enforcement ContainsAppendix ACorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Appendices Appendix A to Subpart K of Part 431 Appendix A to Subpart K of Part 431—Uniform Test Method for Measuring the Energy Consumption of Distribution Transformers Previous 431.192 § 431.192 Definitions. Next Energy Conservation Standards Energy Conservation Standards