These tray systems allow excellent ventilation and prevent sagging while routing. OBO BETTERMANN has offered prod-ucts and solutions for electrical instal-lation for over 100 years. Establishing partnerships. For ease of installation and accessibility, lay cable and hose in trays instead of pulling it through conduit or raceway. Since cable tray support is used in a wide variety of applications, and under varying conditions, it is important that you gain an understanding of. In addition to the covers, optional accessories in various materials and coatings are available to supplement the cable support system, e. Catalogue for cable trays, mesh cable trays, cable ladders, wide-span systems. Calculation modules on-line for simulation of the load, cable filling or other parameters of cable route size to facilitate selection of the most appropriate products.