電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)因導(dao)(dao)線(xian)(xian)過載而起(qi)火(huo)的(de)(de)(de)原因。過載使雙股(gu)(gu)導(dao)(dao)線(xian)(xian)間絕(jue)緣(yuan)(yuan)層破(po)壞(huai)引(yin)(yin)起(qi)短路(lu)，燒毀設備，引(yin)(yin)發火(huo)災。雙股(gu)(gu)導(dao)(dao)線(xian)(xian)靠其(qi)間絕(jue)緣(yuan)(yuan)層隔開，過載使絕(jue)緣(yuan)(yuan)層軟化(hua)破(po)壞(huai)，從而導(dao)(dao)致兩股(gu)(gu)導(dao)(dao)線(xian)(xian)直接(jie)接(jie)觸(chu)(chu)引(yin)(yin)起(qi)短路(lu)，燒損設備。同(tong)時短路(lu)瞬(shun)間大電(dian)(dian)(dian)(dian)流1產(chan)生(sheng)的(de)(de)(de)高溫(wen)使線(xian)(xian)路(lu)起(qi)火(huo)、熔(rong)(rong)斷，產(chan)生(sheng)的(de)(de)(de)熔(rong)(rong)珠落(luo)至可(ke)燃物(wu)(wu)引(yin)(yin)發火(huo)災。過載溫(wen)升(sheng)還能直接(jie)引(yin)(yin)燃附近(jin)可(ke)燃物(wu)(wu)。過載導(dao)(dao)線(xian)(xian)傳熱使附近(jin)可(ke)燃物(wu)(wu)溫(wen)度升(sheng)高，對附近(jin)燃點較低的(de)(de)(de)可(ke)燃物(wu)(wu)來講，將其(qi)引(yin)(yin)燃造成(cheng)火(huo)災是有可(ke)能的(de)(de)(de)。在(zai)貯存物(wu)(wu)品的(de)(de)(de)庫房(fang)和使用易、可(ke)燃裝修的(de)(de)(de)建筑中(zhong)，這(zhe)種危險性尤(you)為突出。過載還使線(xian)(xian)路(lu)中(zhong)的(de)(de)(de)連接(jie)處(chu)在(zai)過熱的(de)(de)(de)條件下，電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)制(zhi)造廠家，這(zhe)加(jia)速了其(qi)氧化(hua)的(de)(de)(de)過程。氧化(hua)使連接(jie)點處(chu)產(chan)生(sheng)不易導(dao)(dao)電(dian)(dian)(dian)(dian)的(de)(de)(de)薄薄一層氧化(hua)膜，氧化(hua)膜加(jia)大了接(jie)觸(chu)(chu)點間的(de)(de)(de)電(dian)(dian)(dian)(dian)阻，合肥電(dian)(dian)(dian)(dian)線(xian)(xian)，從而產(chan)生(sheng)打(da)火(huo)等(deng)現象，引(yin)(yin)起(qi)火(huo)災。

電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜除(chu)進行(xing)交接(jie)試(shi)(shi)驗(yan)和(he)(he)預(yu)防性試(shi)(shi)驗(yan)外，在(zai)施工過(guo)程中還應(ying)(ying)進行(xing)絕緣試(shi)(shi)驗(yan)，以(yi)(yi)鑒別檢查施工各環節的(de)電(dian)(dian)(dian)(dian)纜質量(liang)和(he)(he)工藝質量(liang)。電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜供電(dian)(dian)(dian)(dian)以(yi)(yi)其安全(quan)且可靠、有利于(yu)美化(hua)城市與廠礦布(bu)局等優點，線電(dian)(dian)(dian)(dian)纜單價，獲得了越(yue)來越(yue)廣泛的(de)應(ying)(ying)用(yong)。電(dian)(dian)(dian)(dian)纜應(ying)(ying)排列整齊，電(dian)(dian)(dian)(dian)纜的(de)固定(ding)和(he)(he)彎曲半徑應(ying)(ying)符(fu)合(he)設計圖紙和(he)(he)有關規(gui)定(ding)，電(dian)(dian)(dian)(dian)統應(ying)(ying)無(wu)機械損傷，標(biao)志牌應(ying)(ying)裝設齊全(quan)、正確(que)、清晰(xi)。油(you)浸紙絕緣電(dian)(dian)(dian)(dian)纜及充油(you)電(dian)(dian)(dian)(dian)纜的(de)終端(duan)、中間接(jie)頭應(ying)(ying)無(wu)滲漏油(you)現象。

電纜(lan)是通(tong)過(guo)：拉(la)制(zhi)(zhi)(zhi)、絞(jiao)制(zhi)(zhi)(zhi)、包覆三種工(gong)藝來制(zhi)(zhi)(zhi)作完成的(de)(de)，型號規格(ge)越復雜，重(zhong)復性(xing)越高。1．拉(la)制(zhi)(zhi)(zhi)在金屬(shu)壓力加工(gong)中。在外(wai)力作用(yong)下使(shi)金屬(shu)強行(xing)通(tong)過(guo)模(mo)具（壓輪），電線(xian)電纜(lan)批發，金屬(shu)橫截面積(ji)被壓縮，并獲得(de)所(suo)要求的(de)(de)橫截面積(ji)形狀(zhuang)和尺寸的(de)(de)技(ji)術加工(gong)方法稱為(wei)金屬(shu)拉(la)制(zhi)(zhi)(zhi)。拉(la)制(zhi)(zhi)(zhi)工(gong)藝分：單(dan)絲拉(la)制(zhi)(zhi)(zhi)和絞(jiao)制(zhi)(zhi)(zhi)拉(la)制(zhi)(zhi)(zhi)。2．絞(jiao)制(zhi)(zhi)(zhi)為(wei)了提高電線(xian)電纜(lan)的(de)(de)柔軟度、整體度，讓2根以上的(de)(de)單(dan)線(xian)，按著規定的(de)(de)方向交織在一起稱為(wei)絞(jiao)制(zhi)(zhi)(zhi)。