PHOENIX PHASE CONVERTERS Home ยป PHOENIX PHASE CONVERTERS Rotary phase converters and industrial motor controls. Phoenix, Arizona. GP3NL to GP100NL series. Single-phase to three-phase conversion for CNC, well pumps, machine shops, and industrial loads. Visit Website PHOENIX PHASE CONVERTERS 1620 East El Camino Drive Phoenix, AZ 85020 Tel.:(866) 418-9060