Abstract: A coil winding installation includes a conventional winding machine with an XYZ table and supply tables moveable along a rail with respect to the winding machine. Each table carries a different type of wire delivered by a feeder and a supply coil with a wire guide bar and a fastening bar mounted on the supply table. The wire guide bars and fastening bars are moveable vertically on the supply table and for winding operations the wire guide bar is coupled and fixed to the XYZ table of the winding machine. Once the winding is completed, the wire guide bar is placed on the supply table which can be released to make room for another supply table equipped with a new type of wire. The wire changeover to go from one production series to another is thus automated and avoids the usual losses of time.