Minimum thickness should be ≥1. 5mm for industrial use; ≥2. 0mm for high-load or outdoor environments. Verify supplier certifications and audit history for compliance assurance. Test for load-bearing capacity (up to 50 kg/m) and deflection limits. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require additional protec eferred to support and protect numerous small. Ladder cable tray is available in widths of 6, 9, 12, 18, 24, 30, 36, 42 and 48 inches with rung spacings of 6, 9, 12 or 18 inches. Specifiers should be aware that some cable tray. Thickness varies by material and load capacity: Galvanized cable tray thickness must meet ASTM A653 standards for corrosion resistance. NEC cable tray sizing follows Article 392, which specifies: IEC cable tray sizes (IEC 61537) provide European standards for: Load capacity increases with tray. The cable tray thickness standard landscape is shifting toward higher durability and compliance with international safety benchmarks. The trend toward standardized.
