These trays consist of two parallel side rails connected by rungs at regular intervals, resembling a ladder. They provide excellent cable support, ventilation, and ease of maintenance, making them ideal for carrying power and communication cables. r risk of exposure to live, energized parts. A major advantage of cable ladder is its a aptability to. There are several types of cable trays, including ladder, perforated, solid bottom, basket, and channel trays. What is Cable Tray? A cable tray is a unit, or set of units. As the industry leader in cable tray, Eaton offers one of the widest ranges of B-Line series cable management solutions available in the market today. They are widely used in chemical plants, building con-structions and residential life by virtue of its.