To use these holes for fiber installation, first use a mini hand drill to drill U-shaped holes as pre-outlined in the Cable Tray Base. There are 4 Cable Fixture Holes provided to fix the cable with outer jacket firmly in the Cable Tray Base using a strap. Welcome to our step-by-step guide on installing cable trays! In this video, we'll explore the different types of cable trays available and provide detailed instructions for their installation. Whether you're an experienced electrician or a DIY enthusiast, this video is perfect for you. more. When offloading tray from a flat deck trailer using an overhead crane, care should be exercised in the placement and length of the slings to prevent crushing the product (siderails). Only. 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. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when. There are 5 undrilled U-shaped Fiber Cable Input Holes reserved for flexible fiber installation. The following pages address the 2014 National Electrical Code® requirements for cable tray systems as well as design solutions from practical experience. 's innovative ventilated channel type cable tray, is a UL Classified product with patented push-pin assembly, and is an excellent choice for supporting.