Do cable trays have fire protection requirements?

Cable trays usually have fire protection requirements, especially fire-resistant cable trays. These trays use non-combustible materials or add fire-resistant coatings on the basis of ordinary materials. The coating forms a protective layer at high temperatures, delaying the spread of flames and protecting the internal cables. Fire-resistant cable trays are suitable for places that require fire protection, such as high-rise buildings, underground facilities, industrial plants, etc. In addition, the fire resistance level of cable trays is determined according to the building codes and standards of the country or region. Common fire resistance levels include non-fire resistant and fire resistant types. The latter can provide fire protection for a certain period of time when a fire occurs.