With the continuous progress of science and technology, fire-resistant cables play a vital role in modern cities and public buildings. Its special performance enables it to maintain normal operation in the event of a fire, ensuring that the circuits of the control, monitoring, guidance and warning systems continue to work properly. However, when selecting fire-resistant cables, we need to pay attention to the use of fire-resistant cables. This article introduces the precautions for fire-resistant cables.

First, the key characteristics of fire resistance

Fire-resistant cable has fire-resistant performance, that is, under burning conditions, it can delay the ignition time and ensure the normal operation of the power supply system in the case of fire for a period of time. This feature is crucial for modern cities and public buildings, because in the event of a fire accident, the normal operation of the circuit is directly related to the effectiveness of the control, monitoring, guidance and early warning system.

Second, use precautions

1, not necessarily suitable for high temperature environment

Fire-resistant cables are not meant to be suitable for high temperature cable applications. When selecting the cable type, it is important to ensure that it can adapt to the specific working environment and temperature conditions.

2. Reduce the number of connection heads

In order to reduce the failure probability of cable terminal heads in security accidents, the total number of connection heads should be avoided as far as possible. If you inevitably need to support wiring, it is important to solve the fire safety of the connector to ensure that the cable can work properly in a fire accident.

3, select fire rating

In the construction of cable tunnel where cable lines are gathered, in the insulation layer of cable lines, or in flammable sites, Class A refractory cable is selected. In other cases, when the total number of cable lines is small, Class B fire-resistant cables can be considered.

4, cable cross section adjustment

As the power supply system control circuit of EPS emergency power supply, fire-resistant cable must keep everything working normally in a fire accident. In view of the increase in operating temperature during a fire accident, in order to ensure the transport volume of the cable route and reduce the loss, especially for long routes and control circuits with strict requirements for allowable current, the cross section of the fire-resistant cable should be adjusted to a larger specification.

In summary, the key characteristics of fire-resistant cables make them an integral part of building and urban circuit systems. However, when in use, we need to carefully consider the adjustment of the working environment, the number of connectors, the fire resistance rating and the cable cross section to ensure that it can work reliably under various conditions. When properly selected and used, fire-resistant cables will provide a safe and reliable power supply system for our buildings and cities.


Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable, home improvement wire and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.