A cable tray joint plate is a flat metal piece used to join two cable trays. It comes with drilled holes for nuts and bolts. What is the role of a cable tray in electrical engineering? A cable tray allows for the neat and aesthetic arrangement of cables, improves the reliability. What Are the Main Types of Cable Trays? Cable trays are typically classified by structural design, which directly affects ventilation, load capacity, and cable support. From an engineering standpoint, most installations fall into one of the following categories: Each type is not “better” or “worse”. In the electrical wiring of buildings, a cable tray system is used to support insulated electrical cables used for power distribution, control, and communication. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in. What is a Cable Tray System? A cable tray system is a unit assembly of sections and fittings that forms a rigid structural system used to securely fasten or support cables and wiring. Fittings can, on the one hand, be used for horizontal or vertical changing of the routing direction or, on the other, to change the height or width of the. There are several types of cable trays, including ladder, perforated, solid bottom, basket, and channel trays.