Power Lines

This documentary showcases the intricate process of manufacturing cables designed for transmitting electric power. It begins with the rolling and drawing of copper bars into wire. The wire is then twisted into strands and covered with layers of insulation and protection materials, including rubber, lead, cloth, and paper.

The completed cables undergo high-voltage testing before being dispatched from the factory. This film serves as an informative resource for those interested in industrial processes and the evolution of electrical engineering, reflecting an era when such technologies were rapidly developing. Collectors of documentary films will find the specific focus on cable manufacturing noteworthy, as it captures a significant aspect of mid-20th century industrial practices.