This document explains the common position shared by CEMEP and NEMA regarding harmonics requirements for products, in particular for variable speed drives, in public supply networks. In contrast to Europe, for example, North America follows the philosophy to limit harmonic emissions for installations rather than for individual equipment. This approach, which promotes an optimized, efficient, and cost-effective solution for all installations, is unfortunately sometimes misinterpreted by drives customers or consultants due to inappropriate simplifications or limited understanding, resulting in overly strict harmonic emission requirements for power electronic products. Consequently, an optimized solution is not achieved, and the cost for harmonics mitigation in the final installation is unnecessarily high, potentially requires more facility space, increases system complexity and reduces energy efficiency. 

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