I acquired relating to this outcome within a manufacturing facility where we in essence utilized pure sine wave variable frequency motor controllers on extensive cables since excessive distortion on a long cable could burn up a motor. All the opening dwelling UPS I have found seem like pure sine wave. https://reverautomotiveco29371.thekatyblog.com/32563402/how-uninterruptible-power-supply-can-save-you-time-stress-and-money