Can aluminum wires be placed in cable trays
Due to their exposure to the open air because of the cable trays, the wires contained within need a very durable outer covering. The regulations dictate that the cables must either be Type TC (also known as Tray Rated) or must be metal-armored (Type MC). Tray can be manufactured in various types of material including aluminum, steel and fiber and other nonmetallic materials. Cable trays are a support system for electrical cables, power, signal, and communication and optical fiber cables.
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