Cable tray support quantity can be calculated using a simple formula: Support Quantity = Total Length ÷ Support Spacing + 1 20 ÷ 2 + 1 = 11 supports In a typical project, a 20-meter cable tray with 2-meter spacing requires 11 supports. Cable tray supports are components used to fix and support. Ventilated troughs are excellent for smaller control and instrumentation cables that may sag between the rungs of a ladder tray. For environments with corrosive chemicals or high moisture, composite cable trays made from fiberglass-reinforced plastic (FRP) are a superior choice. They offer. OBO BETTERMANN has offered prod-ucts and solutions for electrical instal-lation for over 100 years. With our many years of experience, we are one of the leading manufacturers in this field. Additional engineering factors must be considered to ensure safety, reliability. Based on "Code for Acceptance of Construction Quality of Building Electrical Engineering" GB50303 and "Specification for Design of Steel Cable Tray Engineering" CECS31 Actual width of the cable tray. Common values: 200, 400, 600, 800mm Actual height of the cable tray. Common values: 50, 100, 150. If full details of the cabling layout are available then the likely cable load can be calculated using either manufacturer's published information or the tables of Cable Weights and Diameters which are given below.
