Cable aging management is an integral and mandatory requirement for continuous safety and reliable operation of nuclear power plants due to the extension of their service life. The research of the scientific community is focused on the adaptation of electrical non-destructive methods of monitoring cable samples in laboratory conditions to determine the state of their electrical insulation. The performed analysis of NPP cable aging management programs proves the need for new representative results of cable research to determine characteristics using special control methods and appropriate equipment. Emphasis is placed on the strategy of cable aging management with the involvement of scientists with professional experience in conducting complex diagnostic examinations with qualified analysis of the obtained results based on the most modern technologies. Effective methods, techniques, and modern techniques for the assessment of the technical condition of NPP cables are presented.