Learn the basic wiring of variable frequency drives / VFD with our electrician Steve Quist. In this video, we used the very popular Mitsubishi D700 series VFD, showing single phase and three phase wiring instructions. The VFDs showed in the video are the D720S (230V single phase) and the D720 (230V three phase). We strongly recommend using a certified electrician to set up your VFDs. If you are doing this on your own, make sure you wear protective gear and take proper precautions.