These trays are used for instrumentation and power cables and can be installed on any surface. The cable trays. A cable tray system is an essential part of modern electrical installations, designed to support, protect, and organize electrical cables efficiently. It consists of a series of open, ladder-like structures made of various materials, such as steel, aluminum, or even fiberglass. Cable trays come in different types: Materials: They can be metal (like steel with a coating, or stainless steel), plastic (like. Let's journey into how different industries utilize these stainless steel wire cable trays. In power plants—whether thermal, hydro, or nuclear—reliability is non-negotiable.