10 CFR 431.204: Uniform test method for the measurement of energy consumption of illuminated exit signs.

(a) Scope. This section provides the test procedure for measuring, pursuant to EPCA, the input power demand of illuminated exit signs. For purposes of this part 431 and EPCA, the test procedure for measuring the input power demand of illuminated exit signs shall be the test procedure specified in § 431.203(b).

(b) Testing and Calculations. Determine the energy efficiency of each covered product by conducting the test procedure, set forth in the Environmental Protection Agency's “ENERGY STAR Program Requirements for Exit Signs,” Version 2.0, section 4 (Test Criteria), “Conditions for testing” and “Input power measurement.” (Incorporated by reference, see § 431.203)