事故经过 前几天笔者正在邻居家看电视,院内照明用的接线盒突然着火燃烧,灯座及拉线开关、木台被烧坏.在场人员迅速拉下闸刀切断电源,及时把火扑灭,阻止了事故的扩大.着火原因 笔者观察分析认为,引起木台燃烧的主要原因是接线盒内导线接头松动,使接触电阻增大,电流通过时产生大量的热所致.接线盒内一根铜芯导线一端进入拉线开关.另一端和铝芯电源线连接.两种不同金属性质的导线相连,运行一段时间后,接头处 A few days ago after the accident, I was watching television in a neighbor’s home. The junction box for the hospital lighting suddenly burned, the lamp holder and pull switch were turned off, the wood table was burned, and the personnel on the scene quickly pulled the knife off to extinguish the fire and put out the fire The cause of the fire.The reason for the author’s observation and analysis that the main cause of wood burning caused by the wire junction box junction box loose, so that the contact resistance increases, the current flow through a lot of heat caused by a junction box copper core One end of the wire into the cable switch and the other end and the aluminum power cord connection. Two different metal properties of the wire connected to run for some time, the joints