探讨了建筑内部电气线路馈线的耐火极限对于拯救生命和财产的重要性。列举了建筑电气线路引发火灾的案例,分析不同的火灾成因。介绍了电路防火保护系统的测试、不同的保护方法以及系统成本。确保当高层建筑,医院和其他场所在发生火灾时,消防员能够正常使用消防电源。 The importance of fire resistance for electrical line feeders in buildings to save lives and property was explored. The cases of fires caused by electrical wiring in buildings are listed, and the causes of different fires are analyzed. Introduced the circuit fire protection system testing, different protection methods and system costs. Ensure firefighters are able to use firefighting power in the event of a fire in high-rise buildings, hospitals and other places.