Can horizontal fabric be used for cable trays

Horizontal fabric is generally not suitable for use as a primary support in cable trays due to mechanical, safety, and code compliance concerns.Cable Tray Material RequirementsCable trays are designed to support electrical cables safely and are typically made from steel, aluminum, stainless steel, or fiberglass-reinforced plastic to provide mechanical strength, durability, and fire resistance . They are intended to carry the weight of cables, resist deformation, and maintain integrity over long periods, often decades . NEC Article 392 specifies that cable trays are support systems, not enclosures, and they must be capable of safely supporting the cables installed .Limitations of FabricUsing horizontal fabric in a cable tray would present several issues:Mechanical Support: Fabric lacks the rigidity to support cable weight, especially over long spans or with heavy power cables. It may sag or stretch, leading to cable strain or damage .Fire Safety: Most fabrics are not rated for fire resistance. Cable trays must comply with fire safety standards to prevent propagation of fire along cable runs .Code Compliance: NEC and industry standards require that cable trays support cables in a manner consistent with manufacturer specifications. Fabric is not recognized as a compliant tray material .Durability: Fabric can degrade over time due to environmental factors such as moisture, UV exposure, or chemical contact, compromising cable support .Acceptable AlternativesIf the goal is to organize or separate cables within a tray, alternatives include:Cable ties or Velcro straps: For bundling and securing cables.Tray dividers or inserts: Plastic or metal dividers to separate power and communication cables.Non-metallic trays: Fiberglass-reinforced plastic trays provide corrosion resistance while maintaining structural integrity .ConclusionWhile fabric may be used as a temporary or protective covering in some non-critical applications, it cannot replace standard cable tray materials for supporting electrical cables. For safety, compliance, and long-term reliability, only materials specified by the manufacturer and recognized by NEC standards should be used in cable tray installations .