NEMA VE 1 – This standard specifies the manufacturing requirements for metal cable trays (such as; channel cable tray, ladder cable tray, single-rail cable tray, wire mesh cable tray, solid bottom or nonventillated cable tray and trough or ventilated cable tray) and associated. NEMA VE 1 – This standard specifies the manufacturing requirements for metal cable trays (such as; channel cable tray, ladder cable tray, single-rail cable tray, wire mesh cable tray, solid bottom or nonventillated cable tray and trough or ventilated cable tray) and associated. This standard specifies the requirements for nonmetallic cable trays and associated fittings designed for use in accordance with the rules of the Canadian Electrical Code (CEC) Part 1, and the National Electrical Code® (NEC). Covers construction and test requirements for. ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. They define a minimum baseline of quality and workmanship f r installing electrical prod-ucts and systems. NEIS are intended to be referenced in contract d cuments for electrical construction pr 006, Metal Cable Tray Installation Guidelines. The. Description: This product category covers metal cable trays and metal cable tray systems intended for field assembly and for use in accordance with Article 392 of NFPA 70. 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 si osure, overheating or.