為什么不能將燃氣管(guan)道作電器接地(di)線？
燃氣有易燃、易爆(bao)的(de)特性。凡是存有一定濃度燃氣的(de)場所，遇到由靜電產生(sheng)的(de)火花，都有可(ke)能使燃氣點燃，引起火災或爆(bao)炸。
由于(yu)戶(hu)內(nei)燃(ran)氣(qi)(qi)管道(dao)對地電(dian)(dian)(dian)阻(zu)較大，若把(ba)戶(hu)內(nei)燃(ran)氣(qi)(qi)管作為家用(yong)電(dian)(dian)(dian)器的(de)接地線(xian)使用(yong)時，一旦家電(dian)(dian)(dian)漏(lou)電(dian)(dian)(dian)或(huo)感應電(dian)(dian)(dian)傳到燃(ran)氣(qi)(qi)管上(shang)，使戶(hu)內(nei)的(de)燃(ran)氣(qi)(qi)管對地產生一定的(de)電(dian)(dian)(dian)位差，可(ke)能(neng)引(yin)(yin)起對臨近金(jin)屬(shu)放電(dian)(dian)(dian)，產生火花，點(dian)燃(ran)或(huo)引(yin)(yin)爆(bao)煤氣(qi)(qi)，造(zao)成安全(quan)事故。如(ru)遇(yu)漏(lou)電(dian)(dian)(dian)，也(ye)有可(ke)能(neng)在(zai)用(yong)戶(hu)開關管道(dao)閥門時造(zao)成觸電(dian)(dian)(dian)事故，因此戶(hu)內(nei)燃(ran)氣(qi)(qi)管道(dao)不能(neng)作接地線(xian)用(yong)。
