Cable trays serve as mechanical support systems designed to hold, route, and protect electrical cables in commercial, industrial, and residential buildings. These structured pathways ensure organized cable management while providing easy access for maintenance and future upgrades. association representing the major electrical equipment manufac-turers in the U. 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. Cable trays support insulated electrical cables in industrial and commercial settings. Our focus has always been on solutions from the field of cable support systems.