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). Metal raceways, cable trays, cable armor, cable sheath, enclosures, frames, fittings, and other metal noncurrent-carrying parts that are to serve as grounding conductors, with or without the use of supplementary equipment grounding conductors, shall be effectively bonded where necessary to ensure. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. This is a description of how to select, install, and support these metal or plastic frames, on which electrical wires are installed. We are planning to use cable tray above a solid ceiling to install sub-circuit cables, but I'm not so sure it violate NEC (since cable tray is not accessible due to solid ceiling). Interested in this topic? By joining CR4 you can "subscribe" to this discussion and.
Read More
