Amendment 1:2021 to CSA C61000-3-3:14, Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection (Adopted amendment 1:2017 to IEC 61000-3-3:2013)