購買電(dian)纜(lan)(lan)：必(bi)須選擇質(zhi)量(liang)制造(zao)商、電(dian)纜(lan)(lan)專賣店：因(yin)為雜質(zhi)的(de)絕緣、氣孔(kong)發(fa)生水樹的(de)起(qi)點，和電(dian)纜(lan)(lan)質(zhi)量(liang)是非常(chang)重(zhong)要(yao)的(de)防止(zhi)水樹老化(hua)。第三(san)點要(yao)看顏(yan)色。根據產品介(jie)紹得知，銅芯(xin)的(de)顏(yan)色是黃中(zhong)(zhong)偏紅，防水橡套電(dian)纜(lan)(lan)，就說明所(suo)用的(de)銅材(cai)(cai)質(zhi)量(liang)較好，而如果(guo)是黃中(zhong)(zhong)發(fa)白則是低質(zhi)銅材(cai)(cai)的(de)表現。構造(zao)比較簡樸(pu)有(you)的(de)僅有(you)導(dao)體(ti)和絕緣層(ceng)，有(you)的(de)只要(yao)織造(zao)涂臘簡便護層(ceng)或包覆一層(ceng)輕(qing)型的(de)軟(ruan)護層(ceng)。電(dian)纜(lan)(lan)的(de)導(dao)芯(xin)是用于傳輸電(dian)流的(de)。

由一根或多(duo)根相互絕緣的導心置于密封(feng)護套(tao)(tao)(tao)中構成的絕緣導線(xian)。其外可加保護覆(fu)蓋層﹐用于傳輸(shu)、分配(pei)電(dian)(dian)能或傳送電(dian)(dian)信號。環(huan)(huan)保橡(xiang)套(tao)(tao)(tao)電(dian)(dian)纜(lan)具有(you)哪(na)些特點，高阻燃性：環(huan)(huan)保橡(xiang)套(tao)(tao)(tao)電(dian)(dian)纜(lan)完全保證其對消防要求(qiu)(qiu)高的建(jian)筑要求(qiu)(qiu)，火災時(shi)橡(xiang)套(tao)(tao)(tao)電(dian)(dian)纜(lan)不(bu)燒(shao)，并能阻止燃燒(shao)后(hou)火焰(yan)的蔓延和(he)災害(hai)的擴(kuo)大。質量差(cha)的橡(xiang)套(tao)(tao)(tao)電(dian)(dian)纜(lan)重量不(bu)足(zu)，要么長度不(bu)夠，要么橡(xiang)套(tao)(tao)(tao)電(dian)(dian)纜(lan)銅(tong)芯雜質過多(duo)。的銅(tong)芯線(xian)銅(tong)芯為紫黑色、偏黃(huang)或偏白(bai)，雜質多(duo)，機械強度差(cha)，韌性不(bu)佳，

可取一根橡套(tao)電(dian)(dian)纜(lan)(lan)頭用(yong)(yong)(yong)手反復彎曲，凡是(shi)(shi)手感(gan)柔軟、強(qiang)度好、塑料(liao)或橡膠手感(gan)彈性大(da)且絕(jue)緣體上無(wu)龜裂的(de)就是(shi)(shi)優(you)等品。質量(liang)差的(de)橡套(tao)電(dian)(dian)纜(lan)(lan)重(zhong)量(liang)不(bu)足，要(yao)么長(chang)度不(bu)夠(gou)，要(yao)么橡套(tao)電(dian)(dian)纜(lan)(lan)銅(tong)芯(xin)雜(za)質過多。的(de)銅(tong)芯(xin)線銅(tong)芯(xin)為(wei)紫黑色、偏(pian)黃或偏(pian)白，雜(za)質多，機械強(qiang)度差，韌性不(bu)佳，如果是(shi)(shi)一些(xie)大(da)型的(de)用(yong)(yong)(yong)電(dian)(dian)設備、或是(shi)(shi)用(yong)(yong)(yong)電(dian)(dian)環境，那(nei)么在(zai)電(dian)(dian)力的(de)輸送(song)方面就需(xu)要(yao)使用(yong)(yong)(yong)到(dao)專門的(de)橡套(tao)電(dian)(dian)纜(lan)(lan)，這種橡套(tao)電(dian)(dian)纜(lan)(lan)是(shi)(shi)專門為(wei)大(da)型用(yong)(yong)(yong)電(dian)(dian)需(xu)求的(de)各類機械操(cao)作。