The brochure describes how to cut wires and steel cables. The description of the design and principle of operation of the devices and mechanisms used for cutting, as well as the calculation of the engine power for cutting materials using friction saws. The brochure covers the development of the design bureau of the Elektrosetizatsiya trust and the experience of installation organizations. The brochure is of interest to a wide range of electricians, builders and installers of electrical networks.