Cable tray elbows shall be supported per NEMA VE 2 requirements. en completely installed, without damage either to conductors or structural system use maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. In practice, the applicable standard depends on three factors: In most international projects, product standards and installation standards are not the same: If you only follow one of them, the system may not pass approval. NEC Article 392 covers the requirements for cable tray systems, including the types of trays recognized, which wiring methods can be installed. Not all cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to similar or. Cable trays shall be installed according to the latest revision of the NEC, NEMA VE 2, and manufacturer's installation instructions. Cable tray supports shall be located so that connectors between horizontal straight sections of tray. This publication is intended as a practical guide for the proper and safe* installation of cable ladder systems, cable tray systems, channel support systems and associated supports.