The fire-resistant cable can still maintain the normal operation of the line for a period of time under burning conditions, that is, in case of fire, the fire-resistant cable will not burn at once, and it can still maintain the normal power supply for a period of time. This characteristic determines that fire-resistant cables play an important role in modern urban and industrial buildings, because once a fire occurs, the power supply circuit of the control, monitoring, guidance and alarm system must maintain normal operation.

Fire-resistant cables are mainly used in the power supply circuit from the emergency power supply to the user's fire fighting equipment, fire alarm equipment, ventilation and smoke exhaust equipment, guiding lights, emergency power sockets, and emergency elevators.

Staff need to pay attention to the following issues when installing fire-resistant cables:

1. When fire-resistant cables are used in inflammable places such as cable-dense cable tunnels, cable interlayers, and near oil depots, Class A fire-resistant cables should be selected first. In addition to these cases, and when the number of cable configurations is small, Class B fire-resistant cables should be selected.

2. Due to the sharp rise in the ambient temperature during the fire, in order to ensure the transmission capacity of the line and reduce the voltage drop, the section of the fire-resistant cable should be enlarged at least one step for the circuit with a long power supply line and strictly limited allowable voltage drop.

3, refractory cable can not be used as high temperature resistant cable.

4, reduce the failure probability of cable joints in fire accidents, and reduce the number of joints as much as possible during installation to ensure that the line can work normally in a fire.

The above content is the content that Tianxing cable shares for you in this issue, I hope it will be helpful to you.


Qingdao Tianxing Cable Co., Ltd. is a technology enterprise specializing in the production of wire and cable in Shandong Province, with more than 150 sets of domestic excellent cable production equipment and testing equipment, excellent production technology, modern testing equipment, to ensure stable product quality and timely supply. The company's main products are power cable, mineral cable, high life wire and cable, radiation crosslinked cable, control cable, computer cable, photovoltaic cable, communication cable, data cable, low smoke halogen free cable, flame retardant series wire and cable.

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