Nowadays, there are more and more high-rise buildings in cities, and fire safety needs to be considered at the beginning of building construction. Therefore, when designing buildings, it is necessary to have a certain understanding of flame-retardant cables. For example, Shenghua Cable has produced flame-retardant cables, which have become a common cable in the city. Flame retardant cables have grades, and which grade should be considered when selecting them? Consider the following factors:

1、 Cable laying environment

The environment in which the cable is laid largely determines the size of the fire that may occur once the cable catches fire, such as semi enclosed cable trays, cable trays, or specialized cable trenches (with cover plates). In such places, the fire is not easy to spread, and flame retardant requirements can be appropriately reduced by one to two levels. It is recommended to choose flame-retardant Class C or flame-retardant Class D.

If the cable is laid in a location where it passes through buildings, or in underground tunnels, interlayers, tunnels, corridors, etc., the air circulation is relatively high. Once a fire breaks out, it is easy to cause the fire to spread, and its flame retardant level should be moderately increased. It is recommended to choose flame-retardant Class B, or even flame-retardant Class A.

2、 How many cables are laid

The number of cables will directly affect the flame retardant level of the cable. This is because once it catches fire, the surrounding cables will also be ignited. If there is no fire separation between the top, bottom, or left and right, once the fire affects each other, it is advisable to take this into account.

3、 The thickness of the cable

The thickness of the cable is also an important factor affecting the selection of flame retardant grade, because cables with smaller outer diameters absorb less heat and are prone to ignition, while cables with larger outer diameters absorb more heat and are not suitable for ignition.

4、 Flame retardant and non flame retardant cables should not be mixed in the same channel

It is best for wires and cables laid in the same channel to have the same or similar flame retardant rating. The extended flame of low-grade or non flame retardant cables is an external fire source for high-grade cables, and even high-grade flame retardant cables have the possibility of catching fire.

In terms of cable selection, there are actually many factors to consider. Here are just a few common considerations, of course, one of the most important is to choose flame-retardant cables. Of course, if you choose flame-retardant cables, you should choose products with excellent quality such as Shenghua Cable. Flame retardant cables are a type of cable produced by Shenghua Cable. For a long time, Shenghua Cable has always insisted on survival with quality, safety as the guarantee, reputation with service, efficiency with management, and development with exploration. Through strict control at every stage from raw material entry to finished product delivery, Shenghua Cable ensures product quality and meets customer requirements.

Shenghua Cable Group mainly produces high and low voltage cross-linked cables, power cables (YJV, YJV22, YJLV) cloth wires (BV, BVR, RVV, RVS) aluminum alloy cables (YJLHV), overhead cables, flame-retardant and fire-resistant cables, rubber sheathed cables, control cables (KVV), special cables and other products. Customers with needs are welcome to inquire.