Cable trays should be sized to accommodate various media, and dividers should be used as necessary. The tray system should be flexible enough to be adjusted on site to avoid the many unforeseen obstructions under the raised floor such as chilled water pipe. ass reinforced polyester) cable trays. These solutions provide optimum safety, flexibility and excellent corrosion resistance for ety lighting, signs, ventilation, etc. With legrand at your side, you are choosing safety, high quality, expertise and a variety of solutions to ensure that your. This method statement covers the site installation of the cable tray & ladders and the requirements of checks to be carried out. “Cable runway” is a term often conflated with “cable pathway”, but it. cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. Hubbell's NEXTFRAME® Ladder Tray is the effective and widely used cable runway that supports and delivers bundles of cable between cabinets, racks, and closets, along walls, and suspended from ceilings.