jiaochedianluzhongyouxuduoyongdianshebeibeibutongyansededianxianlianjieqilai，qizhongjiaobukehushideyinggaishibaoxiansi。baoxiansishixiqijiaofa

，chengrongduanqi。baoxiansidezuoyongshibaohudianlu(線路)及用電設備。

tihuanshi，shouxiangenjubutongdechexingzhaodaobaoxiansididiandeweizhi。yibanbaoxiansihedoukaojindianchi。baoxiansiheziyibandouyoukakougudingzhu，youxiechexinghaihuiyouluoshuanningjin，xudangxinchaikaihezijikedakaibao險絲。

用(yong)鑷(nie)子(zi)保(bao)險(xian)絲(si)拔(ba)掉(diao)，換(huan)上(shang)新(xin)的(de)可(ke)以(yi)了(le)。保(bao)險(xian)絲(si)盒(he)內(nei)一(yi)般(ban)配(pei)有(you)備(bei)用(yong)保(bao)險(xian)絲(si)，且(qie)遠(yuan)離(li)其(qi)保(bao)險(xian)絲(si)以(yi)便(bian)區(qu)別(bie)。用(yong)鑷(nie)子(zi)把(ba)保(bao)險(xian)絲(si)取(qu)出(chu)
，而(er)且(qie)調(tiao)查(zha)其(qi)是(shi)否(fou)熔(rong)斷(duan)，若(ruo)熔(rong)斷(duan)把(ba)適(shi)宜(yi)的(de)備(bei)用(yong)保(bao)險(xian)絲(si)換(huan)上(shang)即(ji)可(ke)。