To guide cables safely over long travels, energy supply systems by igus are used. In the e-chain product range there are models for both long travels and hanging applications. The energy supply systems contain cables for energy supply and hoses for water and de-icing agents. The interior of the e-chains is designed to increase the service life of cables and hoses despite frequent use. If chainflex cables are used, this will additionally increase service life. These cables have been developed explicitly for small bend radii and torsional movements. Particularly in washing facilities, the use of smart plastics energy supply systems and cables makes sense. These are capable of announcing need for maintenance early, so that downtime can be prevented.