NEMA FG 1 – This standard specifies the manufacturing requirements for nonmetallic (fiberglass) cable trays (such as; ladder cable tray trough or ventilated cable tray, solid bottom or nonventillated cable tray and channel cable tray) and associated fittings for use in accordance. NEMA FG 1 – This standard specifies the manufacturing requirements for nonmetallic (fiberglass) cable trays (such as; ladder cable tray trough or ventilated cable tray, solid bottom or nonventillated cable tray and channel cable tray) and associated fittings for use in accordance. The Cable Tray Institute is making available the current edition of this practical guide for the proper installation of aluminum or steel cable tray systems. These guidelines will be useful to engineers, contractors, and maintenance personnel. 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. We know that your time is important! That's why the color-coding system in this catalog is designed to help you select products that fit your service needs. Products are marked to indicate the typical lead time for orders of 50 pieces or less. Customer: How do I select my straight sections. Span support criteria shall be as specified (Reference the following table): 3. Nominal loading depth (as required): 2” (51mm), 3” (76mm), 5”. hore oil and gas industry. Our tray has stood up to the test of being exposed to the corrosive conditions inherent in petroleum products, plus the daily punishment of exposure to w d, weather and salt water. In the development of a complete cable tray support system.