The 80 PLUS^® certification program does not specify pass/fail thresholds for Input Total Harmonic Distortion (ITHD). ITHD is measured across various load conditions and reported in the test data set to assess power quality. The testing methodology follows IEC 62301 for general test conditions and standby power measurements, with harmonic measurements, including ITHD, conducted per IEC 61000-4-7 to ensure accurate and consistent harmonic distortion analysis. These measurements support broader power quality evaluation, though compliance with harmonic limits (e.g., IEC 61000-3-2) may be required in certain markets outside 80 PLUS^® requirements.