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二芯(xin)電纜用于直流(liu)或(huo)單相交流(liu)電。
　　三芯(xin)電纜用于三相(xiang)交(jiao)流(liu)電網中。
　　四芯、五芯電(dian)纜用(yong)(yong)于(yu)三相動力回(hui)路中，當輸(shu)送(song)距離(li)超過電(dian)纜制造長度時，礦用(yong)(yong)電(dian)纜可采用(yong)(yong)單(dan)芯電(dian)纜，但(dan)不得使用(yong)(yong)鎧裝電(dian)纜，并將三相絞敷或(huo)捆(kun)好(hao)敷設。
　　電力電纜絕緣及內護選(xuan)擇
　　工礦企業工廠電(dian)(dian)(dian)網高壓電(dian)(dian)(dian)源(yuan)一(yi)般采用油(you)浸紙(zhi)絕(jue)緣(yuan)鉛包電(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)纜(lan)(lan)ZLQ和LZQD型(xing)及聚(ju)(ju)氯乙烯絕(jue)緣(yuan)聚(ju)(ju)氯乙烯護套鋼帶鎧(kai)裝電(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)纜(lan)(lan)VV或(huo)VLV型(xing)，在有腐蝕性(xing)場所采用交聯聚(ju)(ju)乙烯絕(jue)緣(yuan)電(dian)(dian)(dian)纜(lan)(lan)YJV或(huo)YJLV型(xing)電(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)纜(lan)(lan)。
　　在(zai)垂直或(huo)(huo)高差較(jiao)大的(de)場所安(an)裝(zhuang)敷設的(de)電(dian)(dian)力(li)電(dian)(dian)纜選(xuan)用塑料絕緣(yuan)或(huo)(huo)油(you)浸紙絕緣(yuan)不滴流電(dian)(dian)力(li)電(dian)(dian)纜VLV或(huo)(huo)ZLQD型。
　　在高溫(wen)場所使用的電纜(lan)選用交(jiao)聯(lian)聚乙烯絕緣電力(li)電纜(lan)YJV或YJLY型(xing)。
　　在消防泵，礦用通信電纜保安電(dian)(dian)(dian)源，礦用(yong)橡套電(dian)(dian)(dian)纜(lan)重要(yao)直流回路使用(yong)的電(dian)(dian)(dian)纜(lan)，礦用(yong)控制電(dian)(dian)(dian)纜(lan)采用(yong)交(jiao)聯聚(ju)乙烯護套阻燃電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)YJV—FR或YJLV—FR型。
　　電(dian)力電(dian)纜的選擇
　　控制(zhi)電纜一般采用聚(ju)氯乙(yi)烯(xi)絕(jue)緣或聚(ju)氯乙(yi)烯(xi)護套(tao)電纜KVV或KYV型(xing)