CT-E-type cable trays have integrated extension part and for jointing bolt sets RS 5 (bolt M6x12 and nut M6) or quick locks CT-QL (for trays H=60mm) can be used. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. anage copper, fiber optic, or power cables. The pathway sections shall be provided in five widths: 8" (203mm), 12" (305mm, 18" (457mm), 24" (610mm) and 30" (762mm). 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 transpos regulations which. Heavy duty cable trays and cable ladders are manufactured from pre-galvanized or hot-dipped galvanized sheet metal, designed to meet ideal environmental working conditions for indoor and outdoor use in commercial or industrial environments with high cable density. These trays, meeting. Perforated cable trays are used in places where cables have to be protected underneath. CT-E-type trays are typically used in office- and commercial buildings, schools, hospitals and shopping centres, but also in warehouses, parking halls and industrial buildings.