I had a need for 3-phase power for a PLC/CNC encapsulator. This machine is very sensitive to voltage and requires “clean” power. I tried another company’s rotary phase converter and it damaged the rectifiers. I rebuilt the rectifiers and went with American Rotary Phase Converters AMP-20. Super simple set-up. 1) take it out of the crate. 2) plug it in and read the directions. 3) turn it on and go to work. The is an awesome piece of equipment and it is quiet. I highly recommend this company to you!