生活中(zhong)常用的(de)(de)電(dian)線(xian)(xian)一般有1.5、2.5、4、6、10平(ping)方(fang)(fang)銅電(dian)線(xian)(xian)，2.5平(ping)方(fang)(fang)電(dian)線(xian)(xian)使(shi)用的(de)(de)方(fang)(fang)面很(hen)多(duo)。就例如說我們在家庭中(zhong)進行裝修，普遍很(hen)多(duo)的(de)(de)家庭使(shi)用的(de)(de)都是2.5平(ping)方(fang)(fang)電(dian)線(xian)(xian)。我們下面給大家說一說2.5平(ping)方(fang)(fang)電(dian)線(xian)(xian)的(de)(de)功率，以及它適用于(yu)什(shen)么電(dian)器(qi)。

2.5平(ping)方電線功率(lv)如何(he)？

1、一(yi)般情(qing)況50a以下1平(ping)方(fang)毫米(mi)安(an)全(quan)載流(liu)量(liang)是(shi)6a，50-100a電(dian)(dian)流(liu)載電(dian)(dian)流(liu)量(liang)是(shi)5a，100a以上的(de)(de)(de)話則取1平(ping)方(fang)毫米(mi)的(de)(de)(de)安(an)全(quan)載流(liu)量(liang)是(shi)2.5A;那么多大(da)平(ping)方(fang)的(de)(de)(de)銅(tong)電(dian)(dian)纜就能算出電(dian)(dian)流(liu)了。按(an)照(zhao)三相(xiang)交流(liu)電(dian)(dian)公式(shi)如(ru)下P=1.732*U*I*cosφ，cosφ是(shi)功(gong)率(lv)(lv)因(yin)數(shu)，選0.8;這(zhe)就是(shi)三相(xiang)功(gong)率(lv)(lv)計算公式(shi)。單(dan)相(xiang)的(de)(de)(de)：P=U*I*cosφ，cosφ是(shi)功(gong)率(lv)(lv)因(yin)數(shu)功(gong)率(lv)(lv)因(yin)數(shu)對(dui)于(yu)阻性負載是(shi)1，感性負載選0.8。

2、國標GB4706.1-2005規(gui)定(ding)的(de)電線負(fu)載(zai)電流值：銅(tong)芯線截面積2.5 mm2允(yun)許(xu)長期電流16A~25A 。換算功率(lv)3500~5500W。具體使用(yong)因導(dao)線長度、連續使用(yong)時(shi)間長短以及使用(yong)方(fang)法(穿管、直埋等影響散熱因素(su)(su))等因素(su)(su)不同而區別選用(yong)。

2.5平方電線一般用(yong)于什么(me)電器(qi)？

電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)有空(kong)(kong)調、電(dian)(dian)(dian)(dian)熱(re)(re)水(shui)(shui)器(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)飯鍋(guo)、冰(bing)箱、電(dian)(dian)(dian)(dian)磁(ci)爐(lu)、紅(hong)外(wai)取暖器(qi)(qi)(qi)等，生活中都要用到，2.5平(ping)方毫(hao)米的銅(tong)導(dao)線能帶動(dong)(dong)多(duo)少電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)呢(ni)?如(ru)果按2.5平(ping)方毫(hao)米的銅(tong)導(dao)線計算，可以通過的安(an)全(quan)電(dian)(dian)(dian)(dian)流(liu)(liu)是2.5*8=20A。如(ru)1.5匹空(kong)(kong)調的啟動(dong)(dong)*大(da)(da)電(dian)(dian)(dian)(dian)流(liu)(liu)10A，普(pu)通電(dian)(dian)(dian)(dian)熱(re)(re)水(shui)(shui)器(qi)(qi)(qi)工作(zuo)電(dian)(dian)(dian)(dian)流(liu)(liu)在(zai)5A左(zuo)右，電(dian)(dian)(dian)(dian)飯鍋(guo)工作(zuo)電(dian)(dian)(dian)(dian)流(liu)(liu)在(zai)5A以下，電(dian)(dian)(dian)(dian)磁(ci)爐(lu)的工作(zuo)電(dian)(dian)(dian)(dian)流(liu)(liu)在(zai)10A左(zuo)右，紅(hong)外(wai)取暖器(qi)(qi)(qi)電(dian)(dian)(dian)(dian)流(liu)(liu)在(zai)6A左(zuo)右，這(zhe)(zhe)些都是大(da)(da)功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)了。這(zhe)(zhe)些大(da)(da)功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)同(tong)時工作(zuo)不要超過三個，如(ru)果同(tong)時工作(zuo)兩個的話還是可以的。如(ru)果家里沒有開空(kong)(kong)調，那(nei)(nei)么同(tong)時有三個電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)工作(zuo)，還是可以的。特別注意(yi)，空(kong)(kong)調和(he)電(dian)(dian)(dian)(dian)磁(ci)爐(lu)是功(gong)率(lv)(lv)*大(da)(da)的電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)，這(zhe)(zhe)兩個大(da)(da)功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)，盡量不要同(tong)時工作(zuo)。如(ru)果用快速電(dian)(dian)(dian)(dian)熱(re)(re)水(shui)(shui)器(qi)(qi)(qi)，那(nei)(nei)么需(xu)要單獨(du)布線，快速電(dian)(dian)(dian)(dian)熱(re)(re)水(shui)(shui)器(qi)(qi)(qi)的功(gong)率(lv)(lv)達(da)到3000W，因此需(xu)要4平(ping)方的銅(tong)導(dao)線單獨(du)供電(dian)(dian)(dian)(dian)，這(zhe)(zhe)種電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)對(dui)導(dao)線的要求太高了。

現在一(yi)般使用(yong)(yong)單芯(xin)2.5平方的(de)銅導線用(yong)(yong)的(de)比(bi)較多。電線品牌不(bu)同價(jia)格也(ye)很不(bu)同，現在正(zheng)常國標BV2.5的(de)電線價(jia)格在160元(yuan)/米到(dao)170元(yuan)/100米。好一(yi)些牌子的(de)有230元(yuan)/米到(dao)240元(yuan)/100米，也(ye)有便(bian)宜的(de)120元(yuan)/100米，不(bu)過質量和數量都很差的(de)。

上面(mian)介紹了2.5平(ping)方電線的(de)功率(lv)，以及它適(shi)用于電器的(de)相關知識(shi)。也許在(zai)生活在(zai)用到的(de)時(shi)候(hou)不多(duo)，但是掌握了總是沒(mei)壞處(chu)。至少(shao)我們要(yao)清楚自(zi)己(ji)室內的(de)電線是幾平(ping)方的(de)，然后(hou)在(zai)使用家電時(shi)要(yao)合理安排(pai)。