What is the difference between fire resistant cables and fire resistant cables?

Literally, "fire resistant cable" is relatively resistant to combustion when encountering a fire, and can generally maintain normal operation for at least 180 minutes at a flame temperature of 750 to 800 ℃.  "Fireproof cable" is a high-efficiency fireproof cable made of special materials to prevent fire and combustion, with seamless copper tubes as the sheath and magnesium oxide as the insulating material. Common models include BTLY, YTTW, BBTRZ, HFTGB, BBTZ, and so on. The experiment shows that the fireproof wires and cables still operate normally at 800~900 ℃ for 2 hours, and continue to operate normally at 1000 ℃ for 30 minutes. In a fire, it is similar to inorganic substances and cannot be burned.

"Fire resistant cable" refers to adding a layer of fire resistant mica tape to an ordinary cable, while "fire resistant cable" is a mineral insulated cable, and the materials used between the two are completely inconsistent.  The fire-resistant characteristics of fire-resistant cables are mainly achieved by the fire-resistant mica tape between the conductor and the insulating layer. After burning, a carbon shell will form between the mica and the insulating layer, which will conduct electricity when exposed to water, and will fall off when washed with water.

Mineral insulated cables can be vitrified when exposed to high temperatures, protecting internal conductors, and are truly fireproof cables.