Energy Conservation Program: Test Procedures for External Power Supplies

On October 9, 2014, the U.S. Department of Energy (DOE) issued a notice of proposed rulemaking (NOPR) to amend the test procedure for External Power Supplies (EPSs). That proposed rulemaking serves as the basis for this final rule. The U.S. Department of Energy is issuing a final rule amending its test procedure for external power supplies. These changes, which will not affect the measured energy use, will harmonize the instrumentation resolution and uncertainty requirements with the second edition of the International Electrotechnical Commission (IEC) 62301 standard when measuring standby power along with other international standards programs, and clarify certain testing set-up requirements. This final rule also clarifies which products are subject to energy conservation standards.