Each splice tray includes one or more slots containing fusion, mechanical, or pigtail splices and single mode or modes splicing configurations. The overall dimensions of the tray are 148 x 125. According to the 2014 National Electric Code® (NEC), any listed optical fiber cable is acceptable for a tray application. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube. talled in a cable tray. OCC FOTC cables will withstand aggressive pulling, impact from falling debris, and harsh temperatures. Our tray-rated cables are used in a variety of indoor and outdoor environments such as manufacturing plants, oil refineries and platforms, utilities, substations, under. All cables are comprised of layers of protection for the fibers. Most all start with standard fiber with a primary buffer coating (250 microns) and add: Tight buffer coating (tight buffer cables like simplex, zipcord, distribution and breakout types): A soft protective coating applied directly to. A fiber optic splice tray is a storage component specifically developed to store and organize spliced optic fibers. Its role in containing such splices includes the protection of splices from environmental and mechanical strain determinants that would otherwise affect the effectiveness of the.