選用銅芯(xin)線(xian)首先要(yao)(yao)看(kan)的(de)是外觀，一般色澤均勻、光潔圓(yuan)潤，絕緣皮和銅芯(xin)不(bu)易剝脫即合(he)格。在此(ci)要(yao)(yao)提醒大家：有(you)些劣質(zhi)電(dian)線(xian)膠(jiao)皮看(kan)起來很(hen)厚，但用力擠時，會出(chu)現(xian)白色。這種(zhong)銅芯(xin)線(xian)比(bi)較(jiao)容易老(lao)化(hua)漏電(dian)。

除以上所述檢膠層外，還應(ying)注(zhu)意產品(pin)是否有(you)“CCC”認證標(biao)(biao)志，亨通電線電纜詢價，如商(shang)標(biao)(biao)、型號規格、額(e)定電壓、長(chang)度、廠(chang)名(ming)稱、廠(chang)址、電話(hua)等標(biao)(biao)識(shi)，這些才是正規廠(chang)家的(de)產品(pin)。

第二，要看(kan)(kan)銅(tong)芯線的(de)(de)側面(mian)，簡單地說就是能夠看(kan)(kan)到線材內(nei)部材料的(de)(de)一面(mian)。看(kan)(kan)電線外(wai)面(mian)膠(jiao)皮的(de)(de)厚度是否一致(術語叫(jiao)：偏心)，亨(heng)通電纜怎么(me)樣，銅(tong)芯是否在導線正中，如有偏差即為(wei)不合格(ge)產品。

此處提到銅(tong)芯(xin)在(zai)這里(li)多加一句：一般銅(tong)芯(xin)的(de)質(zhi)(zhi)(zhi)量較差，外絕緣(yuan)皮也較厚(hou)，而銅(tong)芯(xin)本身就會偏(pian)黃或偏(pian)白(bai)(bai)，里(li)面(mian)摻雜雜質(zhi)(zhi)(zhi)，亨通電纜，那銅(tong)芯(xin)內(nei)是否有雜質(zhi)(zhi)(zhi)？做法很簡單，將(jiang)銅(tong)芯(xin)放在(zai)白(bai)(bai)紙(zhi)上揉一揉，若白(bai)(bai)紙(zhi)上留有黑點的(de)物質(zhi)(zhi)(zhi)就是雜質(zhi)(zhi)(zhi)含量多。

那怎樣(yang)檢查膠皮的(de)(de)質量(liang)呢，很容(rong)易(yi)，用打火機(ji)燒掉膠皮，當打火機(ji)離(li)開銅(tong)芯電線時(shi)，電線上的(de)(de)火苗仍在蔓延(yan)，并(bing)且釋放了大量(liang)的(de)(de)白煙，說明膠皮質量(liang)不好，反之(zhi)就好。

銅(tong)芯電力電纜的優點:

低電(dian)(dian)(dian)(dian)壓(ya)損(sun)耗(hao):由(you)于銅(tong)芯(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)電(dian)(dian)(dian)(dian)阻率(lv)低，銅(tong)芯(xin)(xin)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)(lan)的輸電(dian)(dian)(dian)(dian)能量達到很遠的距離(li)，即供電(dian)(dian)(dian)(dian)覆蓋面積大，同一(yi)截面通過(guo)相(xiang)同電(dian)(dian)(dian)(dian)流時。銅(tong)芯(xin)(xin)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)(lan)的電(dian)(dian)(dian)(dian)壓(ya)降(jiang)低，因此相(xiang)同的輸電(dian)(dian)(dian)(dian)距離(li)下(xia)，可(ke)以保證高電(dian)(dian)(dian)(dian)壓(ya)質量；或(huo)者在(zai)允許的壓(ya)降(jiang)條件下(xia)，有利(li)于網(wang)絡規劃，可(ke)以減少供電(dian)(dian)(dian)(dian)點的設置。

:鋁(lv)(lv)反(fan)復彎曲容易斷裂，銅(tong)比鋁(lv)(lv)高(gao)1.7~1.8倍左右，銅(tong)不易斷裂。甚至彈性(xing)指標(biao)。

.耐腐蝕：鋁芯電(dian)力電(dian)纜連接(jie)器不穩(wen)定(ding)時，亨通電(dian)纜批發，氧(yang)化會導致接(jie)觸電(dian)阻(zu)增大，發熱常(chang)發生事故(gu)，銅(tong)芯電(dian)纜接(jie)頭性能穩(wen)定(ding)，無氧(yang)化事故(gu)，因此，事故(gu)率遠高于銅(tong)芯電(dian)纜。

加熱溫度低:電流相同，運行安全，同斷面銅芯電纜的加熱量遠小于鋁芯電纜。

我們將(jiang)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)和(he)電(dian)(dian)(dian)纜統(tong)一(yi)稱(cheng)為(wei)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)電(dian)(dian)(dian)纜。“電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)電(dian)(dian)(dian)纜”是指用于電(dian)(dian)(dian)力(li)、電(dian)(dian)(dian)氣(qi)及相關(guan)傳輸用途的材料。“電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)”和(he)“電(dian)(dian)(dian)纜”之間并沒有嚴格(ge)的界(jie)限和(he)準確(que)且(qie)固定的概念區(qu)分，一(yi)般僅以日常經驗來進行區(qu)分。通常將(jiang)芯(xin)數少、產(chan)品直徑小、結構簡單(dan)的產(chan)品稱(cheng)為(wei)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，沒有絕緣的稱(cheng)為(wei)裸電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，其他的稱(cheng)為(wei)電(dian)(dian)(dian)纜；導體截(jie)面積大于6平(ping)方毫米(mi)稱(cheng)為(wei)大電(dian)(dian)(dian)纜，導體截(jie)面積小于或等于6平(ping)方毫米(mi)稱(cheng)為(wei)小電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)又(you)稱(cheng)為(wei)布電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)。