{"data":{"id":"us/10-cfr-429.54","jurisdiction":"us","citation":"10 CFR 429.54","heading":"Metal halide lamp ballasts and fixtures.","body":"(a) Sampling plan for selection of units for testing. (1) The requirements of § 429.11 are applicable to metal halide lamp ballasts; and\n(2) For each basic model of metal halide lamp ballast selected for testing, a sample of sufficient size, not less than four, shall be selected at random and tested to ensure that:\n(i) Any represented value of estimated energy efficiency calculated as the measured output power to the lamp divided by the measured input power to the ballast (Pout/Pin), of a basic model is less than or equal to the lower of:\n(A) The mean of the sample, where:\nOr,\n(B) The lower 99-percent confidence limit (LCL) of the true mean divided by 0.99.\nAnd x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.99 is the t statistic for a 99% two-tailed confidence interval with n-1 degrees of freedom (from appendix A).\n(b) Certification reports. (1) The requirements of § 429.12 are applicable to metal halide lamp ballasts; and\n(2) Pursuant to § 429.12(b)(13), a certification report shall include the following public product-specific information: The minimum ballast efficiency in percent (%), the lamp wattage in watts (W), and the type of ballast (e.g., pulse-start, magnetic probe-start, and non-pulse start electronic).","path":["Title 10—Energy","CHAPTER II—DEPARTMENT OF ENERGY","SUBCHAPTER D—ENERGY CONSERVATION","PART 429—CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT","Subpart B—Certification"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"ed9fd31cc43818062a9f674a5493966e792944a308d0e94330b800ea16fb98d3","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-429.53","next":"us/10-cfr-429.55"},"notice":"GroundRules: Original legal text. Not legal advice."}