一文介紹怎么判斷電線電纜廠家的平方數是否達標？

電線幾平方是國家標準規定的的一個標稱值，電線的平方實際上標的是電線的橫截面積，即電線圓形橫截面的面積，單位為平方毫米。是用戶根據電線電纜的負…

電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)幾平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)是國家標準規定的(de)(de)(de)的(de)(de)(de)一個標稱值(zhi)，電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)實際(ji)上標的(de)(de)(de)是電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)橫(heng)截(jie)(jie)面積，即(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)圓形橫(heng)截(jie)(jie)面的(de)(de)(de)面積，單位為平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)毫米。是用戶(hu)根(gen)據電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)(de)(de)負(fu)荷來選擇電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)。那電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)怎(zen)么(me)看(kan)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)數(shu)的(de)(de)(de)呢？電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)是怎(zen)么(me)計算？電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)規格在國際(ji)上常(chang)用的(de)(de)(de)有(you)三(san)個標準：分別是美(mei)制（AWG）、英制（SWG）和我(wo)們的(de)(de)(de)（CWG）。電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)怎(zen)么(me)看(kan)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)數(shu)？幾平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)是國家標準規定的(de)(de)(de)的(de)(de)(de)一個標稱值(zhi)，幾平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)是用戶(hu)根(gen)據電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)(de)(de)負(fu)荷來選擇電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)。電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)數(shu)是裝修水電(dian)(dian)(dian)(dian)(dian)(dian)施工中的(de)(de)(de)一個口頭用語，常(chang)說的(de)(de)(de)幾平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)是沒加單位，即(ji)(ji)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)毫米。電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)實際(ji)上標的(de)(de)(de)是電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)(de)橫(heng)截(jie)(jie)面積，即(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)圓形橫(heng)截(jie)(jie)面的(de)(de)(de)面積，單位為平(ping)(ping)(ping)(ping)(ping)方(fang)(fang)(fang)毫米。

1、整(zheng)捆的(de)新(xin)線，包裝表面會有線的(de)標(biao)簽(qian)，清(qing)楚標(biao)注(zhu)線的(de)品牌、型號、線徑（電線的(de)平(ping)方(fang)數）

2、有些大品牌的電線在絕緣層上(shang)印有品牌、型號、線徑(jing)（電線的平方數）。

3、對(dui)于沒有標注的電(dian)線(xian)，經驗豐富的電(dian)工可以(yi)通過目(mu)測，看出(chu)電(dian)線(xian)的平方(fang)數。

4、江蘇電線電纜沒有經驗的人，如果要判斷電線的粗細（平方），可用游標尺測量電線的直徑，然后求出截面。如果要判斷電線的粗細（平方），可用游標尺測量電線的直徑，然后求出截面截面的計算公式：S=半徑的平方R??×π（R為電線的半徑）比如直徑1.76的線，就是1.76÷2×3.14=2.76平方≈2.5平方，（取近似值）。如果你是要選擇電線的大小，一般是先根據用電器的功率大小算出電流，然后根據電流在查電工手冊即可，這樣比較準確。