盤算各分支電流的值為了更好地保證 商業保險牢固，聚碳酸酯表箱電(dian)(dian)氣設(she)備構件(jian)的(de)額定值工(gong)作(zuo)中電(dian)(dian)流某些(xie)應超過2倍需要(yao)的(de)負載電(dian)(dian)流；除此之外，在設(she)計(ji)方案、抉(jue)擇電(dian)(dian)氣設(she)備構件(jian)時，家用聚碳(tan)酸酯表箱也要(yao)充分考慮當(dang)今用電(dian)(dian)量提升的(de)概率，為(wei)當(dang)今需要(yao)留出容量.

總負(fu)載電(dian)流(liu)即是各分支(zhi)電(dian)流(liu)之跟；曉(xiao)得了分支(zhi)電(dian)流(liu)跟總電(dian)流(liu)，就很有可能抉擇(ze)分支(zhi)空(kong)氣開(kai)關(guan)及(ji)電(dian)閘開(kai)關(guan)空(kong)氣開(kai)關(guan)、總熔斷絲，總電(dian)度表及(ji)其各環路電(dian)纜線的(de)規格型(xing)號(hao)，或(huo)是檢算已(yi)設計(ji)方(fang)案的(de)這種電(dian)氣設備(bei)構件的(de)規格型(xing)號(hao)是不是符合商業保險(xian)要求(qiu)；

②客觀負(fu)載(zai)，如熒光燈管，電(dian)視，全自動洗衣機，等盤(pan)算(suan)(suan)稍微繁(fan)雜(za)，要(yao)考慮(lv)到(dao)耗費輸出(chu)(chu)(chu)功率，實際(ji)盤(pan)算(suan)(suan)也要(yao)考慮(lv)到(dao)功率因素等，為(wei)以(yi)(yi)便估計(ji)，小編得(de)出(chu)(chu)(chu)一個(ge)勤(qin)儉的(de)盤(pan)算(suan)(suan)方式(shi)，即某些客觀負(fu)載(zai)，根據其(qi)標明負(fu)載(zai)盤(pan)算(suan)(suan)出(chu)(chu)(chu)去的(de)輸出(chu)(chu)(chu)功率在翻一倍就可以(yi)(yi)，比如標明20W的(de)日日光燈的(de)分支(zhi)電(dian)流I=20W/220v=0.09A，翻番為(wei)0.09A2=0.18A（比恰(qia)當(dang)盤(pan)算(suan)(suan)值(zhi)0.1，多0.03A）

①純電(dian)(dian)(dian)阻性(xing)負載，如(ru)電(dian)(dian)(dian)燈(deng)泡，電(dian)(dian)(dian)熱(re)水器(qi)等(deng)(deng)用標明輸(shu)(shu)出(chu)功率(lv)立即除于工作電(dian)(dian)(dian)壓即得，公式計(ji)算(suan)I=輸(shu)(shu)出(chu)功率(lv)/220v；比(bi)如(ru)20w的(de)電(dian)(dian)(dian)燈(deng)泡，分支電(dian)(dian)(dian)流I=20W/220=0.09A。電(dian)(dian)(dian)扇、熨(yun)斗、電(dian)(dian)(dian)褥子(zi)、家用熱(re)水器(qi)、電(dian)(dian)(dian)暖氣(qi)、電(dian)(dian)(dian)飯煲、電(dian)(dian)(dian)鍋(guo)、吸塵機(ji)、中央空調等(deng)(deng)為感性(xing)負載負載。

空(kong)氣開(kai)關(guan)(guan)(guan)在家(jia)中(zhong)供電(dian)(dian)系統中(zhong)作總(zong)開(kai)關(guan)(guan)(guan)電(dian)(dian)源維護保(bao)養(yang)(yang)電(dian)(dian)源開(kai)關(guan)(guan)(guan)或分(fen)支線維護保(bao)養(yang)(yang)電(dian)(dian)源開(kai)關(guan)(guan)(guan)用。當(dang)住房路線或家(jia)庭裝造成(cheng)短(duan)路故障或負(fu)載時(shi)，它能積跳(tiao)電(dian)(dian)，斷開(kai)開(kai)關(guan)(guan)(guan)電(dian)(dian)源，進(jin)而合理(li)的維護保(bao)養(yang)(yang)這種機器(qi)設備免遭毀壞(huai)或防止(zhi)事情擴張；家(jia)中(zhong)某些用二（即2P）空(kong)氣開(kai)關(guan)(guan)(guan)作總(zong)開(kai)關(guan)(guan)(guan)電(dian)(dian)源維護保(bao)養(yang)(yang)，用單(dan)級（1P）作分(fen)支維護保(bao)養(yang)(yang)；空(kong)氣開(kai)關(guan)(guan)(guan)的額(e)定(ding)值電(dian)(dian)流倘若抉(jue)擇(ze)的偏(pian)小(xiao)，則空(kong)氣開(kai)關(guan)(guan)(guan)易經常跳(tiao)電(dian)(dian)，造成(cheng)多余的斷電(dian)(dian)，如抉(jue)擇(ze)過大，則達不上預(yu)估(gu)的維護保(bao)養(yang)(yang)不良影響，因(yin)而家(jia)居裝修空(kong)氣開(kai)關(guan)(guan)(guan)，恰(qia)當(dang)抉(jue)擇(ze)短(duan)路容量電(dian)(dian)流尺寸(cun)很重(zhong)要。某些中(zhong)小(xiao)型(xing)空(kong)氣開(kai)關(guan)(guan)(guan)規格型(xing)號關(guan)(guan)(guan)鍵以(yi)額(e)定(ding)值電(dian)(dian)流區6A，10A，16A，20A，2，32A，40A，50A，63A，80A，100A等(deng)；那麼某些家(jia)中(zhong)怎樣抉(jue)擇(ze)或檢算總(zong)負(fu)載電(dian)(dian)流的總(zong)價值呢(ni)？

聚碳酸酯表箱空氣(qi)開關(guan)的尺(chi)寸抉擇，某(mou)些是按用電流的1.2倍抉擇就可(ke)以。例如(ru)，380V工作(zuo)電壓(ya)時，某(mou)輸(shu)出功(gong)率為(wei)5000W，盤算電流為(wei)23A上(shang)下(xia)，則23A