Structural elements of cables, wires and cords, their external dimensions and weight are described. Mechanical and electrical characteristics, as well as voltage values during electrical tests, data on permissible current loads are presented. Recommended applications for cables and wires. Reference tables are provided for calculating cables, wires, and cords. For engineers and technicians of design and installation organizations and enterprises related to the use of cables, wires and cords, for workers in the cable industry and for students.