CFR›Title 10›Chapter II›Part 431›Subpart K ContainsSections 431.191–431.192; Subject groups Compliance and Enforcement–Test ProceduresCorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Subpart K—Distribution Transformers Contents 431.191 § 431.191 Purpose and scope. 431.192 § 431.192 Definitions. Compliance and Enforcement Compliance and Enforcement Appendix A Energy Conservation Standards Energy Conservation Standards Section 431.196 Test Procedures Test Procedures Section 431.193 Source70 FR 60416, Oct. 18, 2005, unless otherwise noted. Previous J Subpart J—Fans and Blowers Next L Subpart L—Illuminated Exit Signs