Key Considerations for Choosing Cable Trays

1. Determine the Operating Environment First (to Select the Appropriate Material)

• Indoor ordinary environments: Hot-dip galvanized cable trays are the optimal choice, featuring excellent cost-performance and sufficient corrosion resistance to meet basic indoor usage needs.
• Outdoor, damp, or rain-exposed environments: Hot-dip galvanized or stainless steel cable trays are recommended, as they offer strong rust resistance to withstand harsh outdoor and damp conditions.
• Acid-base and corrosive environments (e.g., chemical plants, coastal areas): Stainless steel 304/316 or fiberglass cable trays should be selected, as they can effectively resist corrosion from acids, alkalis, and salt spray.
• Fire protection, civil air defense, and critical power distribution circuits: Fire-resistant cable trays (coated with fire-resistant paint to meet the required fire resistance duration) must be used to ensure safety in case of fire.

2. Select the Structural Form Based on Cable Type

• Power cables and high-current cables: Ladder-type cable trays are preferred, offering good heat dissipation performance and a lightweight design, which helps avoid overheating of high-current cables.
• Control cables, signal cables, and weak current cables: Slot-type cable trays are suitable, featuring a fully enclosed structure that provides anti-interference and dust-proof protection, ensuring stable signal transmission.
• Comprehensive wiring and mixed multiple cables: Tray-type cable trays are the most versatile option, capable of accommodating various types of cables and facilitating wiring management.

3. How to Select Specifications and Dimensions (Avoid Waste and Overload)

• Power cables: ≤ 40%
• Control cables: ≤ 50%