flame retardant cableWidely used in large buildings, tunnels, petrochemical industry, power plants, mines and other places with high requirements for fire prevention. When a fire occurs, it can prevent the fire from spreading on the cable, avoid the expansion of the fire accident, and reduce losses. The long-term allowable working temperature of flame-retardant cables (wires) should be consistent with the corresponding standard models of ordinary products. A comprehensive and correct understanding of flame-retardant and fire-resistant cables is the primary condition for selecting them correctly.

　　
Designers should design, select, and lay flame-retardant cables based on their specific characteristics, and pay attention to the following issues:
　　
1) Due to the release of corrosive halogen acid gas during combustion of halogen containing flame-retardant cables (including flame-retardant cables and low halogen low smoke flame-retardant cables), which greatly hinders firefighting work, delays firefighting time, and exacerbates the spread of fire, halogen-free low smoke flame-retardant cables should be designed and selected as much as possible in public places with high population density. In work areas with low population density, any type of flame-retardant cable can be selected.
　　
2) Flame retardant cables are divided into Class A, B, and C3, among which Class A flame-retardant cables have better performance and are also the most expensive. Designers should indicate the category of flame-retardant cables when providing an order list. 3) It is impossible to distinguish the A, B, and C categories of flame-retardant cables from their appearance, and only the manufacturer can guarantee the supply. Therefore, cable manufacturers should be carefully selected when designing and selecting.
　　
4) Compared with halogen containing flame-retardant cables, halogen-free low smoke flame-retardant cables have the advantages of low corrosion and low smoke, but their electrical and mechanical properties are significantly reduced. Therefore, when laying cables, halogen-free low smoke flame-retardant cables should have a larger bending radius than halogen containing flame-retardant cables.
　　
5) When designing cable laying, it is not advisable to lay non flame retardant cables and flame retardant cables in parallel, and it is not advisable to lay flame retardant cables of different flame retardant categories in parallel.