Key factors that influence cable tray size choosing include the type and specifications of cables, their number, the layout of the electrical system, the installation environment, and future expansion considerations. The selection of material and finish is a function of the environment in wh tant in a wide range of environments, and easily formable (Appendices II and III). 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. number of basic decisions must be made before a cable tray system can be specified. UNIVERSAL has developed a simple seven-step process to guide you in the process: Each step is described in detail below. For many applications, however, you may also have to take the following into account: Weight. In this article, we go through the essential factors to consider when selecting the right electric cable tray for your application. We'll also explore key aspects like electrical cable management, cable tray materials, cable tray design, cable tray specifications, cable tray load capacity and cable. Before selecting a cable tray, consider the following key factors: Cable Type and Volume: Determine the number and type of cables to be supported. Environmental Conditions: Assess indoor or outdoor usage, exposure to moisture, chemicals, or extreme temperatures. Load Capacity: Choose a tray that.