Material: The cable trays are made of steel, aluminum, or fiberglass only, while the conduits are made of metallic or non-metallic materials like PVC, fiberglass, plastic, stainless steel, or aluminum. As opposed to conduit, cable trays are open trays on and along which bundles of cables can be arranged and laid. Some tray cable, with XLPE insulation (cross-linked polyethylene), is sunlight resistant and suitable for installation in free air and hazardous locations - although this goes according. The Cable Tray Institute (CTI) was founded in 1991 to support the cable tray industry by engaging in research, development, education, and the dissemination of information designed to promote, enhance, and increase the visibility of the industry. There are metal rigid. Conduit systems are enclosed pipes that require precise bends, threading, and pulling. They're excellent for protecting individual circuits in harsh or public areas, but they're labour‑intensive and slower on large cable counts.
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