Cable tray is like a special shelf that is used to hold and organize wires and cables. It's kind of like how you might have a toy box to keep all your toys in one place.
The cable tray is usually a long, flat piece of metal or plastic that has raised edges on the sides to keep the wires from falling off. It can be installed along the walls or ceilings of buildings, and sometimes even outside.
Cable tray is important because it helps keep wires and cables organized and protects them from damage. If wires are just left on the floor or hanging from the ceiling, people might trip over them or they might get damaged by things like water or dust.
So, like a toy box keeps your toys safe and organized, a cable tray keeps wires neat and protected.