U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 10Chapter IIPart 431Subpart S - Subpart S—Metal Halide Lamp Ballasts and Fixtures

TEST PROCEDURES
§ 431.323 - Materials incorporated by reference.
§ 431.324 - Uniform test method for the measurement of energy efficiency and standby mode energy consumption of metal halide lamp ballasts.
§ 431.321 - Purpose and scope.
§ 431.322 - Definitions concerning metal halide lamp ballasts and fixtures.

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