With the increasingly intelligent social intelligence, modern wiring is like human nervous system, extending to every corner of the building, which is covered with dense cables, especially like the data centers that are being built now, all kinds of various types, all kinds In infrastructure of various skyscrapers, the number of cables they carried is an amazing number. Every time you do a project, you may only think of how many models of cables are used in this project and how many meters do you need to use? There are so many wires and cable models, but their fire resistance and flame retardant requirements are ignored, and then they are ignored. Then Become a huge hidden danger that causes fire, so how many elements should be considered in the project design design? Today, I will analyze it for everyone.

1. Cable laying environment

To a large extent, the cable laying environment determines the probability of cables due to external fire sources and the possibility of extending disasters after fire, such as: direct or single -pipe pipes (metal, asbestos, cement pipes) can be used Cable burning cables, placed in semi -closed bridges, wire grooves, or special cable signs (with lids), can appropriately reduce the flame retardant requirements one to two. It is recommended to choose a flame -retardant C, perhaps flame retardant D.

Because of this environment, there are few opportunities for invasion, and even if it is burned due to narrow water, it is easy to extinguish themselves, and it is not easy to become disaster. Conversely, the indoor is cleared, climbing the building, perhaps secret, sandwiches, tunnel corridors, and people with trains can easily reach those who have relatively large space after fire and the air is easy to circulate. The flame retardant should be properly increased. It is recommended to use flame retardant B, or even flame -retardant Class A. When the above environment is more in front of the high -temperature furnace or flammable and explosive chemical, oil, and the mine environment must be treated strictly in the mine environment, and the height is not low. It is recommended to choose a flame retardant A, and may use the halogen -free and low smoke flame -retardant Class A.

2. How many cables are laid

The number of cables affects the level of flame retardant of cables, mainly because the amount of non -metallic materials in the same space confirmed the flame retardant category. When calculating the volume of non -metallic materials of wire and cable, the concept of the same space refers to the flame when the cable is on fire. Or the space that can be radiated without blocking the ground to nearby wires and cables and can ignite it. For example, the truss or groove box with the fireboard is the same channel. The same channel should refer to each bridge or slot box. If there is no fire resistance on the upper or bottom or left and right, it is advisable to include uniformly when the fire is calculated by the non -metal volume of the cable.