Are fireproof cable trays also called metal cable trays

Fireproof cable trays are typically made of metal, often steel, and are considered a type of metal cable tray with enhanced fire resistance.

Material and Classification

Fireproof cable trays are generally constructed from steel or other metal alloys, similar to standard metal cable trays, but they are designed to withstand higher temperatures and maintain circuit integrity during a fire . Unlike flame-retardant or standard trays, fireproof trays may include special coatings, fire-resistant boards, or semi-closed structures to enhance fire containment without significantly altering the metal base . Their weight and cost are usually comparable to steel trays, with only slight increases due to fireproofing measures .

Fire Resistance Features

The primary distinction of fireproof trays is their ability to prevent flame spread and maintain cable circuit integrity under fire conditions . This is achieved through:

• Fire-resistant coatings or surface treatments
• Installation of fire barriers within the tray
• Semi-closed or enclosed tray designs to isolate fire zones These features do not change the fundamental material classification; the tray remains a metal cable tray but with enhanced fire performance .

Applications and Considerations

Fireproof metal trays are commonly used in industrial, commercial, and high-risk environments where fire safety is critical. They are preferred over aluminum trays in high fire-protection areas because aluminum has lower fire resistance . Routine inspection and maintenance are recommended to ensure the fireproofing remains effective over time .

Summary

In conclusion, fireproof cable trays are considered metal cable trays because their core material is metal, usually steel, but they are specially designed or treated to provide superior fire resistance. They combine the mechanical strength of metal trays with additional fire safety features, making them suitable for environments with stringent fire protection requirements .