線纜敷設(she)的方式(shi)有：直(zhi)埋，管道敷設(she)，淺溝(gou)敷設(she)，電(dian)纜溝(gou)敷設(she)，電(dian)纜隧道敷設(she)，架空敷設(she)。

這些方(fang)(fang)(fang)法(fa)都(dou)有各自(zi)的(de)(de)(de)(de)優缺(que)點。總體上要(yao)(yao)(yao)考(kao)慮到(dao)城(cheng)市(shi)發(fa)展規劃、現(xian)有建筑物密度、線纜長度及周(zhou)邊(bian)環(huan)境(jing)的(de)(de)(de)(de)影響(xiang)。從技術上講，電(dian)(dian)纜隧道(dao)(dao)和(he)電(dian)(dian)纜溝便于(yu)施(shi)工，維護和(he)維修。公共隧道(dao)(dao)已經(jing)被納入一(yi)些發(fa)達國家城(cheng)市(shi)的(de)(de)(de)(de)城(cheng)市(shi)規劃和(he)建設中(zhong)(zhong)去考(kao)慮。實際應用(yong)表明，該方(fang)(fang)(fang)案運行效果良(liang)好(hao)，很大地減(jian)少了重(zhong)復投(tou)資(zi)(zi)和(he)路面(mian)重(zhong)復開挖現(xian)象(xiang)。但初期投(tou)資(zi)(zi)大，建筑材料耗資(zi)(zi)多。由于(yu)各種因素的(de)(de)(de)(de)影響(xiang)，這種鋪(pu)設方(fang)(fang)(fang)式(shi)(shi)在中(zhong)(zhong)國并(bing)不(bu)多見。而直埋(mai)電(dian)(dian)纜和(he)淺槽敷(fu)設方(fang)(fang)(fang)式(shi)(shi)則更為經(jing)濟(ji)。直接埋(mai)入式(shi)(shi)電(dian)(dian)纜是經(jing)濟(ji)、應用(yong)廣泛的(de)(de)(de)(de)電(dian)(dian)氣敷(fu)設方(fang)(fang)(fang)式(shi)(shi)，在郊(jiao)區和(he)車輛不(bu)經(jing)常經(jing)過的(de)(de)(de)(de)地區得(de)到(dao)廣泛應用(yong)。但是，對電(dian)(dian)纜的(de)(de)(de)(de)維修和(he)保養不(bu)利。當電(dian)(dian)纜出(chu)現(xian)故障時，即使測試(shi)員發(fa)現(xian)故障點，也(ye)要(yao)(yao)(yao)重(zhong)新挖掘電(dian)(dian)纜溝，十(shi)分不(bu)便。所以，電(dian)(dian)纜敷(fu)設方(fang)(fang)(fang)式(shi)(shi)的(de)(de)(de)(de)選擇應根據實際情(qing)況，根據工程(cheng)條件、環(huan)境(jing)特點、電(dian)(dian)纜型(xing)號及數量等(deng)因素，結(jie)合(he)開發(fa)的(de)(de)(de)(de)需要(yao)(yao)(yao)，根據運行滿足可靠性的(de)(de)(de)(de)要(yao)(yao)(yao)求，便于(yu)維護，符合(he)技術原則，經(jing)濟(ji)合(he)理。

電纜選用。

普通電(dian)力電(dian)纜(lan)主要有(you)油浸(jin)式電(dian)纜(lan)、PVC絕緣電(dian)纜(lan)、交聯PE電(dian)纜(lan)等。

可根據不(bu)同(tong)(tong)的使(shi)用(yong)(yong)(yong)場合(he)擴展到不(bu)同(tong)(tong)類型的專用(yong)(yong)(yong)電(dian)(dian)纜(lan)。近(jin)年來，隨著生(sheng)產工藝(yi)的不(bu)斷改進，交聯聚乙烯電(dian)(dian)纜(lan)已成為(wei)應(ying)用(yong)(yong)(yong)廣(guang)泛(fan)的電(dian)(dian)纜(lan)產品。應(ying)根據不(bu)同(tong)(tong)使(shi)用(yong)(yong)(yong)環境(jing)和(he)條件，并結合(he)具體情況選擇電(dian)(dian)纜(lan)，以(yi)更大限度(du)地減少各類鐵路、公路和(he)通信電(dian)(dian)纜(lan)的穿越。鋼(gang)鎧裝電(dian)(dian)纜(lan)應(ying)用(yong)(yong)(yong)于直槽和(he)淺槽敷設。

電纜橫截面積的(de)選取。

線(xian)纜(lan)橫截面積的(de)選(xuan)擇與線(xian)纜(lan)投資、線(xian)損、電壓質量和線(xian)纜(lan)壽命有關。

若(ruo)截(jie)(jie)(jie)斷面(mian)積(ji)過(guo)小(xiao)，電(dian)(dian)壓質量降低，線損(sun)過(guo)大(da)，初始投資過(guo)大(da);根據負(fu)荷預測(ce)結果和開發計(ji)劃(hua)(hua)，合(he)理(li)選(xuan)擇(ze)電(dian)(dian)纜(lan)截(jie)(jie)(jie)面(mian)積(ji)，使其在(zai)(zai)更(geng)大(da)工作(zuo)電(dian)(dian)流(liu)下(xia)(xia)能(neng)滿足鐵心溫度(du)和壓降要(yao)求(qiu)，在(zai)(zai)更(geng)大(da)短路電(dian)(dian)流(liu)作(zuo)用(yong)下(xia)(xia)能(neng)滿足熱穩定要(yao)求(qiu)。因負(fu)荷預測(ce)難度(du)大(da)，精度(du)不高，電(dian)(dian)纜(lan)截(jie)(jie)(jie)面(mian)積(ji)的選(xuan)取應(ying)符合(he)《城(cheng)市中低壓配(pei)電(dian)(dian)網(wang)絡(luo)改造(zao)技術(shu)導則》及《城(cheng)市電(dian)(dian)網(wang)規(gui)劃(hua)(hua)導則》的要(yao)求(qiu)。

在選擇低壓(ya)三相(xiang)四線(xian)(xian)電(dian)(dian)網電(dian)(dian)源(yuan)時，還應考慮零(ling)線(xian)(xian)截面(mian)(mian)(mian)積的選擇。公共低壓(ya)電(dian)(dian)網由于(yu)受(shou)用(yong)戶因素的影(ying)響(xiang)，三相(xiang)負荷平(ping)衡很難(nan)控制。為改善電(dian)(dian)壓(ya)品質，降低線(xian)(xian)損，零(ling)線(xian)(xian)截面(mian)(mian)(mian)積應等(deng)于(yu)相(xiang)線(xian)(xian)截面(mian)(mian)(mian)積。

有線(xian)網(wang)(wang)絡和有線(xian)網(wang)(wang)絡的自動化(hua)。

由于電(dian)(dian)(dian)力電(dian)(dian)(dian)纜在(zai)配電(dian)(dian)(dian)網(wang)(wang)絡(luo)中的不(bu)(bu)斷推(tui)廣和(he)使用(yong)，配電(dian)(dian)(dian)網(wang)(wang)絡(luo)可以分為(wei)電(dian)(dian)(dian)纜網(wang)(wang)和(he)架(jia)空網(wang)(wang)(包(bao)括架(jia)空網(wang)(wang)和(he)電(dian)(dian)(dian)纜混合網(wang)(wang))。城鎮中低電(dian)(dian)(dian)壓配電(dian)(dian)(dian)網(wang)(wang)改造技術(shu)導則(實施補(bu)充意(yi)見)>實施補(bu)充意(yi)見也(ye)對(dui)(dui)配電(dian)(dian)(dian)網(wang)(wang)電(dian)(dian)(dian)纜自(zi)(zi)動(dong)(dong)化(hua)提出具體(ti)要求。所以在(zai)配網(wang)(wang)區域(yu)網(wang)(wang)CATV網(wang)(wang)絡(luo)中，應(ying)根據配網(wang)(wang)自(zi)(zi)動(dong)(dong)化(hua)的要求，采用(yong)新(xin)技術(shu)、新(xin)設(she)(she)備，對(dui)(dui)自(zi)(zi)動(dong)(dong)化(hua)進(jin)(jin)行試驗，對(dui)(dui)條件不(bu)(bu)成熟的配套設(she)(she)備進(jin)(jin)行選型，為(wei)實施自(zi)(zi)動(dong)(dong)化(hua)打下基(ji)礎。