The cable tray is meant to prop up insulated cables for communication and power distribution. Cables are mounted on the tray, rather than placed inside a pipe. It can be likened to the structural cog of the building’s electrical layout, as it protects the cables both inside and outside. Wires are organized properly so wire maintenance is easier.
A cable tray facilitates the process of tracking down where wires come from for repairs, and also creates effective fire sealing between wall panels.