Ladder tray is typically used for heavy-duty power cables and long industrial runs, offering high strength and easy cable entry. There are several types of cable trays, including ladder, perforated, solid bottom, basket, and channel trays. Each cable tray type performs a different function and comes in various materials such as aluminum. Cable tray systems are engineered support structures designed to route, support, and protect insulated electrical cables used for power distribution, control, instrumentation, and communication.