The special single cores are used for permanent flexible applications in machines, machine tools, composting appliances and sewerage-treatment plants, animal stalls and greenhouses. They are used for permanent flexible application for movable automated machinery parts and multi-shift operation, as well as in open air. These cables are installed for flexible use with free movements without tensile stress or forced movements and are suitable for application in drag chains. The selected tinned copper wire conductor and tinned copper wire braid permit the installation in aggressive environments as well as hydrogen sulfide, ammonia and sulfur dioxide.