家(jia)(jia)里砌(qi)房子(zi)、蓋小樓、裝(zhuang)潢及家(jia)(jia)用(yong)(yong)(yong)電(dian)(dian)(dian)器的(de)(de)引(yin)電(dian)(dian)(dian)，都需要(yao)敷設電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜這(zhe)個現化家(jia)(jia)庭(ting)生活的(de)(de)“動脈”，隨著現代科技(ji)的(de)(de)發(fa)展，人們(men)對家(jia)(jia)用(yong)(yong)(yong)電(dian)(dian)(dian)器需求越(yue)(yue)來越(yue)(yue)多，用(yong)(yong)(yong)電(dian)(dian)(dian)量也越(yue)(yue)來越(yue)(yue)大(da)，因而家(jia)(jia)庭(ting)對電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜的(de)(de)依賴更強。可是為了(le)住宅的(de)(de)美觀、舒適、安全(quan)、實用(yong)(yong)(yong)，對家(jia)(jia)用(yong)(yong)(yong)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜就不(bu)能隨意選用(yong)(yong)(yong)和敷設，應(ying)根據家(jia)(jia)庭(ting)用(yong)(yong)(yong)電(dian)(dian)(dian)環境和用(yong)(yong)(yong)電(dian)(dian)(dian)總功率(lv)選用(yong)(yong)(yong)，同(tong)時消費者還(huan)應(ying)注重電(dian)(dian)(dian)線(xian)(xian)產(chan)品質量，增強敷電(dian)(dian)(dian)安全(quan)意識。
一、電線電纜規格(ge)的選擇(ze)
; 電(dian)(dian)線電(dian)(dian)纜應按低壓配電(dian)(dian)系統的額定電(dian)(dian)壓、電(dian)(dian)力負荷、敷(fu)設環境、及(ji)其與附近電(dian)(dian)氣裝置、設施之間是(shi)否產(chan)生(sheng)有害的電(dian)(dian)磁感應等要求(qiu)來選擇適(shi)當的型號和截面，以到達經濟、實用、安(an)全(quan)的效果。
首先考慮(lv)的就是(shi)敷(fu)電(dian)(dian)(dian)(dian)的安全性，對于家用(yong)(yong)電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜(lan)是(shi)使(shi)用(yong)(yong)銅芯(xin)(xin)導體還是(shi)使(shi)用(yong)(yong)鋁(lv)芯(xin)(xin)導體也很重要，建議住宅(zhai)敷(fu)線(xian)時一定要使(shi)用(yong)(yong)銅芯(xin)(xin)電(dian)(dian)(dian)(dian)線(xian)，因為(wei)(wei)銅芯(xin)(xin)線(xian)比(bi)鋁(lv)芯(xin)(xin)線(xian)有(you)較好的強度(du)和(he)延展性，導電(dian)(dian)(dian)(dian)性能也比(bi)鋁(lv)芯(xin)(xin)線(xian)好，一樣截面的銅芯(xin)(xin)電(dian)(dian)(dian)(dian)線(xian)的使(shi)用(yong)(yong)壽命比(bi)鋁(lv)芯(xin)(xin)電(dian)(dian)(dian)(dian)線(xian)長，況且(qie)鋁(lv)的熔點比(bi)銅低，一旦線(xian)路過載，很容易發生火災。一般家庭常用(yong)(yong)銅芯(xin)(xin)電(dian)(dian)(dian)(dian)線(xian),型號有(you):BV、BVR、BVV、BVVB、RVV等,其皆為(wei)(wei)軟(ruan)聚氯乙烯(xi)絕緣，具(ju)有(you)防濕(shi)、耐油(you)、耐酸、防腐蝕(shi)性好等特點，使(shi)用(yong)(yong)相當廣泛。
對(dui)于電(dian)(dian)(dian)(dian)纜截面大(da)(da)小(xiao)的(de)選取(qu)，應根據住(zhu)(zhu)(zhu)宅(zhai)(zhai)的(de)最(zui)大(da)(da)用(yong)電(dian)(dian)(dian)(dian)需求量以及電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜所能承受的(de)最(zui)大(da)(da)載(zai)流量而定。以往，人們計(ji)(ji)算(suan)住(zhu)(zhu)(zhu)宅(zhai)(zhai)用(yong)電(dian)(dian)(dian)(dian)量時，是(shi)根據建(jian)筑設計(ji)(ji)規(gui)范(fan)上說(shuo)的(de)按每(mei)平(ping)(ping)方(fang)米面積40~50W 計(ji)(ji)算(suan)。這對(dui)于90平(ping)(ping)方(fang)米以上的(de)大(da)(da)房子(zi)還(huan)可以，但(dan)是(shi)對(dui)于50~60平(ping)(ping)方(fang)米的(de)普(pu)通住(zhu)(zhu)(zhu)宅(zhai)(zhai)則不能滿(man)足(zu)要求。因此，住(zhu)(zhu)(zhu)宅(zhai)(zhai)裝修前，應先(xian)計(ji)(ji)劃好住(zhu)(zhu)(zhu)宅(zhai)(zhai)的(de)全部用(yong)電(dian)(dian)(dian)(dian)量，再選擇電(dian)(dian)(dian)(dian)線(xian)的(de)截面。如果把一般所有的(de)家用(yong)電(dian)(dian)(dian)(dian)器都計(ji)(ji)算(suan)在內，包括空調(diao)、電(dian)(dian)(dian)(dian)冰(bing)箱、洗耳(er)恭(gong)聽衣機、彩電(dian)(dian)(dian)(dian)、微波爐(lu)、熱水器、電(dian)(dian)(dian)(dian)飯鍋、電(dian)(dian)(dian)(dian)腦、音響等(deng)，再留出幾年的(de)發展余量，則每(mei)套住(zhu)(zhu)(zhu)宅(zhai)(zhai)的(de)用(yong)電(dian)(dian)(dian)(dian)負荷應為6~8KW。
家(jia)庭電(dian)線電(dian)纜規(gui)(gui)格的(de)選用，應根據(ju)家(jia)用電(dian)器的(de)總(zong)功(gong)率來計算，然后(hou)根據(ju)不同規(gui)(gui)格電(dian)線的(de)最大載流能力來選取(qu)合適的(de)電(dian)線電(dian)纜。