1. For cable networks requiring electromagnetic interference shielding or protection against external environmental factors (such as corrosive liquids or flammable dust), a composite anti-corrosion shielded cable tray of the trough type (with cover) should be selected.
2. In highly corrosive environments, Class (F) composite epoxy resin anti-corrosion and flame-retardant cable trays should be used. Brackets and supports must be made of the same material to extend the service life of the tray system. Covers should be installed in environments prone to dust accumulation, locations requiring protection, or outdoor areas.
3. In other situations, the choice of tray type-such as solid-bottom (trough), perforated (tray), ladder, fiberglass (anti-corrosion/flame-retardant), or standard steel-may be based on site conditions and technical requirements. Covers should be installed in environments prone to dust accumulation, locations requiring protection, or outdoor areas.
4. For sections spanning public passageways or roadways, a bottom plate should be added to the underside of ladder-type trays, or a solid-bottom tray should be used for that section. For long-span crossings over public passageways, the load-bearing capacity of the tray may be increased or a truss-type structure selected, depending on user requirements.
5. Composite cable trays should be selected for long spans (exceeding 3 meters).
6. Composite epoxy resin cable trays should be selected for outdoor installations.
