On the cable should not be a large number of fire-retardant paint brushing way fire but should be a large number of letters, blocking compartment way. In the use of closure, blocking, and compartment mode, should pay attention to the following questions:
1. With the closure, blocking, and separated approach, to be able to ensure that a single cable does not extend to the ignition of fire to more than one cable. Control cables should be used for fire-retardant treatment or use of fire-retardant cables to ensure that in an emergency, the main equipment can stop the operation safely.
2. Must ensure that the fire blocking tightness, and thickness. Fire blocking is not close to the loss of sealing effect, especially in the cable where the concentration of the best use of soft block material to ensure strict closure. Maintenance inspection and the destruction of the closure should be promptly restored. Blocking material thickness is not enough, the cable fire after the fire will pass through the plugging material of the series delaying combustion.
3. Fire blocking layer should have sufficient mechanical strength. Because the cable fire in particular the occurrence of electrical short-circuit, will cause the rapid expansion of the air and produce a certain momentum, destruction.
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