Building Your Own - How to Build a Rotary Phase Converter
If you've recently scored a deal on a heavy-duty lathe, mill, or air compressor, you've probably realized that learning how to build a rotary phase converter is the next logical step to getting that machine running. Most residential garages and small shops only have single-phase power coming out of the walls, but those big industrial machines crave three-phase power. Buying a pre-made rotary phase converter (RPC) can cost you a small fortune, but building one yourself is a rite of passage for many DIY machinists and woodworkers. It's essentially using a three-phase motor to "manufacture" that third leg of power that your house is missing. ...