Direct fixing: gas guns and other direct fixing elements to quickly, easily and effectively anchor elements such as clamps or perforated tapes. Whether you're managing voice, data, or electrical cables, ensuring your trays are installed correctly is essential to keeping everything neat, secure, and functional. Several mounting. Article Summary: A compliant cable tray installation requires a thorough understanding of NEC Article 392, proper structural support, and precise installation techniques. 1Why Are Cable Tray Supports Important? Cable tray support structures form the basis of the cable tray system. This is why proper planning and execution are.