How thick are Swedish fireproof cable trays in meters

Swedish fireproof cable trays typically have a material thickness ranging from 0.0015 to 0.003 meters (1.5–3 mm), depending on tray type and load class.

Material and Standards

Fireproof cable trays in Sweden are usually made from galvanized steel, stainless steel, or aluminum alloys, designed to maintain structural integrity under high temperatures and prevent cable damage during a fire . The thickness of the tray material is selected based on mechanical strength requirements, the number and weight of cables, and compliance with European fire safety standards .

Typical Thickness by Tray Type

• Ladder trays: Often used for heavy power cables; side rails and rungs are thicker, typically 2–3 mm (0.002–0.003 m) to support high loads and ensure fire resistance .
• Perforated trays: Provide ventilation while supporting cables; material thickness is usually 1.5–2.5 mm (0.0015–0.0025 m) .
• Channel trays: Compact and used for light-duty cables; thickness is generally 1.5–2 mm (0.0015–0.002 m) .
• Wire mesh (basket) trays: Flexible and lightweight; wire diameters correspond to 1.5–2 mm (0.0015–0.002 m) for fireproof variants .

Fireproofing Considerations

Fireproof cable trays are tested for thermal conductivity and circuit integrity under fire conditions. The material thickness contributes to heat resistance, ensuring that cables maintain functionality for a specified duration during a fire . Thicker steel trays provide better fire performance, while aluminum or coated trays may require additional fireproofing measures.

Conversion to Meters

• 1.5 mm = 0.0015 m
• 2 mm = 0.002 m
• 3 mm = 0.003 m Thus, depending on the tray type and duty class, Swedish fireproof cable trays generally fall within 0.0015–0.003 meters in thickness. This range ensures both mechanical strength and fire resistance, suitable for industrial, commercial, and critical infrastructure installations in Sweden.