Heavy power cable trays are normally the strongest in steel. Their open rung structure allows air circulation and simplifies large power cable installation. Standard Widths: Side Rail Heights: Standard Lengths: Rung Spacing Options: Material Thickness:. An electrical cable tray is a type of containment system used to support insulated electrical cables for power distribution, control, and communication. Today, electrical cable trays have become an essential component in industrial and commercial construction, providing a quick, economical, and. EAE cable trays and ladders provide high-strength cable protection that protects the cables from external factors. 6m can be produced upon request. Applications: Control. us-trations without notice.