- The steps for installing cable trays, which include marking, cutting, drilling holes, installing supports, and fixing fittings and accessories. MILWAUKEE® supply specialised tools for cabinet installation and other tasks at tricky angles. The document is a training manual that outlines cable tray. 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. This method statement covers the site installation of the cable tray & ladders and the requirements of checks to be carried out. It stops issues, keeps things working, and saves you money over time.