A flame-retardant cable refers to a cable that is burned under the specified test conditions. After the test fire source is removed, the flame spreads only within a limited range, and the residual flame or residual burn can be self-extinguishing within a limited time. Its fundamental characteristic is that it may be burnt out in the event of a fire and cannot operate, but it can prevent the spread of fire. In layman's terms, if the cable is in a fire, it can limit the combustion to a local area, spread without spreading, and keep other equipment to avoid further losses.
A fire resistant cable refers to the ability of a sample to be burned in a flame under specified test conditions to maintain normal operation for a certain period of time. Its fundamental characteristic is that the cable can still maintain the normal operation of the line for a period of time under combustion conditions. In layman's terms, in the event of a fire, the cable will not burn at a time, and the circuit is safer.
Therefore, the main difference between the fire-resistant cable and the flame-retardant cable is that the fire-resistant cable can maintain a normal power supply for a period of time in the event of a fire, and the flame-retardant cable does not have this characteristic. This feature determines that fire-resistant cables play an important role in modern urban and industrial buildings, because once a fire occurs, the system's power supply loops for control, monitoring, guidance, and alarming must maintain normal operation. Therefore, the fire-resistant cable is mainly used in emergency power supply to the user's fire-fighting equipment, fire alarm equipment, ventilation and smoke exhaust equipment, guide lights, emergency power outlets, emergency elevators and other power supply circuits.