This is a manual for making a home-made phase converter for converting single-phase to three-phase electricity. Included are complete plans for static and rotary converters for 2 horsepower to 30 horsepower. Building your converters can save hundreds and thousands of dollars.You can build a single motor [static] converter to operate one three-phase motor from 1/8 horsepower to 15 horsepower, or a multi-motor [rotary] converter which can be a few small motors up to 30 horsepower with a total load of 60 horsepower.