Almost all of my several dozen shop machines are running on single phase, but I am running a VFD on one of my metal lathes that is 3 phase and have for years and it has been trouble-free. in my life, taught Industrial Tech for several years, and have a lot of experiences using machinery ran with both VFDs and rotary phase converters. I have restored / rebuilt several hundred wood and metalworking machines, motorcycles, various mfg. Latest report on my newest VFD Without bragging or without exaggeration.