New National Standard for Thickness of Mesh Cable Trays

The standard wire thickness for mesh (basket) cable trays typically ranges from 1.5 mm to 2.5 mm, depending on load class and tray width.Overview of Mesh Cable Tray ThicknessWire mesh cable trays, also known as basket trays, are designed for data, telecom, and light power systems, offering flexibility and ease of installation. The thickness of the wires forming the mesh is a critical factor in determining the tray's load capacity and structural integrity. Standard thicknesses are generally specified according to NEMA VE 1/VE 2, UL 568, and IEC 61537 standards .Typical Thickness RangesLight-duty trays: 1.5 mm (approx. 0.059 in) wire diameter, suitable for small cable bundles and short spans.Medium-duty trays: 2.0 mm (approx. 0.079 in) wire diameter, commonly used for moderate cable loads.Heavy-duty trays: 2.5 mm (approx. 0.098 in) wire diameter, designed for larger bundles or longer unsupported spans .The mesh grid size and support spacing also influence the effective load capacity, so thicker wires are often paired with wider trays or longer spans to maintain safety and prevent sagging .Standards and GuidelinesNEMA VE 1/VE 2: Provides manufacturing requirements, load/span class designations, and material specifications for metal cable trays, including wire mesh types .UL 568: Covers performance requirements for fiberglass and metal cable trays, ensuring safe application under electrical load conditions .IEC 61537: International standard specifying requirements and tests for all metal cable trays, including wire mesh trays, for electrical and communication installations .Practical ConsiderationsWhen selecting a mesh cable tray, consider:Cable type and total weightTray width and length of unsupported spansEnvironmental conditions (corrosion, temperature)Compliance with NEC, NEMA, or local electrical codesBy adhering to these standards, installers ensure mechanical stability, safety, and long-term reliability of the cable support system .