In this optimization procedure for the cabling, the characteristics of the cables used to connect a power source to a receiving charge are defined in function of the predetermined and environmental constraints. In the cases where a line realizing the link between the power source and the receiving charge is comprised of several distinct cables connected through cutouts, the section of cables is dimensioned for each cable in the line, independently of the other cables, and is then optimized while taking the overall constraints of the line into account.