31 (C) now aligns with the Code's broader language (like Article 392), allowing these smaller conductors and detailing how to calculate ampacities, the number of conductors permissible in cable trays, how to size cable trays correctly by width, layering or. The updated section 690. Addresses shipping, handling, storing, and installation of metal cable tray systems. Information on maintenance and system modification is also. CODE Manufacturing Ltd. foot manufacturing facility in Port Coquitlam, B. and are 100% Canadian owned and operated. Our professional, seasoned sales staff take pride in the quality of the workmanship from conception to finished. association representing the major electrical equipment manufac-turers in the U. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. The B-Line series Cable Tray Manual was produced by our technical staff. The following pages address the 2014 National Electrical Code® requirements for cable tray systems as well as design. In this installment of our Code Corner series, Ryan Mayfield focuses on the 2023 National Electrical Code (NEC) changes concerning cable trays, particularly section 690.