配(pei)電(dian)(dian)(dian)(dian)箱(xiang)采用鐵板或其(qi)他防(fang)火絕(jue)緣材料制(zhi)作，做(zuo)到通風(feng)、散(san)熱、防(fang)雨(yu)、防(fang)火；箱(xiang)內(nei)各種電(dian)(dian)(dian)(dian)器，應(ying)安(an)裝(zhuang)(zhuang)在金屬(shu)或其(qi)他絕(jue)緣板上(非木質板)，并緊固(gu)于箱(xiang)內(nei)。金屬(shu)底板應(ying)與箱(xiang)體作電(dian)(dian)(dian)(dian)氣連接；高壓(ya)(ya)配(pei)電(dian)(dian)(dian)(dian)室(shi)應(ying)為(wei)一、二級(ji)耐火等級(ji)建筑。低(di)壓(ya)(ya)配(pei)電(dian)(dian)(dian)(dian)室(shi)的(de)耐火等級(ji)不(bu)應(ying)低(di)于三(san)級(ji)。配(pei)電(dian)(dian)(dian)(dian)室(shi)的(de)窗應(ying)有防(fang)水、防(fang)雨(yu)雪、防(fang)小動(dong)物進入的(de)措(cuo)施。高、低(di)壓(ya)(ya)配(pei)電(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置同(tong)(tong)在一室(shi)時，它們之間的(de)距離應(ying)不(bu)小于1米。配(pei)電(dian)(dian)(dian)(dian)箱(xiang)內(nei)電(dian)(dian)(dian)(dian)器選(xuan)擇(ze)不(bu)當引(yin)起的(de)故障(zhang)：由(you)于在制(zhi)造時對交流接觸器容(rong)量選(xuan)擇(ze)不(bu)很恰(qia)當，對不(bu)同(tong)(tong)出線回路安(an)裝(zhuang)(zhuang)同(tong)(tong)容(rong)量的(de)交流接觸器，且未(wei)考慮(lv)到三(san)相負荷的(de)不(bu)平衡(heng)情況，。

照明(ming)配電箱(xiang)采用(yong)(yong)(yong)(yong)不當，增加了照明(ming)配電箱(xiang)的(de)故障率，選(xuan)用(yong)(yong)(yong)(yong)低阻產(chan)品(如低阻熔斷(duan)器(qi))，不僅能降(jiang)低損耗，而且(qie)還能減少配電箱(xiang)內集聚的(de)熱量(liang)，延長設備的(de)使用(yong)(yong)(yong)(yong)壽命。進入(ru)高(gao)壓配電箱(xiang)的(de)電源線(xian)(xian)，嚴禁用(yong)(yong)(yong)(yong)插銷連接;配電箱(xiang)、開關箱(xiang)的(de)箱(xiang)體材料，一般選(xuan)用(yong)(yong)(yong)(yong)鋼板(ban)，亦(yi)可選(xuan)用(yong)(yong)(yong)(yong)絕(jue)緣板(ban)，但不宜選(xuan)用(yong)(yong)(yong)(yong)木質材料;電箱(xiang)之(zhi)間的(de)距離不宜太遠。連接線(xian)(xian)要使用(yong)(yong)(yong)(yong)絕(jue)緣導線(xian)(xian)，不得(de)有漏電部分。工作零線(xian)(xian)要通過接線(xian)(xian)端子(zi)板(ban)連接，與保(bao)護零線(xian)(xian)接線(xian)(xian)端子(zi)板(ban)分設；金屬箱(xiang)體、電器(qi)安裝板(ban)以及電器(qi)的(de)不應帶(dai)電金屬底座(zuo)，外殼必須有接零措施。

配(pei)電(dian)(dian)箱(xiang)蓋應(ying)完(wan)好無損，操作(zuo)完(wan)畢(bi)后及時(shi)將蓋子蓋上(shang)。在更換(huan)空氣(qi)(qi)斷路(lu)器(qi)時(shi)，工地(di)臨時(shi)電(dian)(dian)三級配(pei)電(dian)(dian)箱(xiang)，要綜合考(kao)慮配(pei)電(dian)(dian)箱(xiang)的(de)(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)、負載(zai)的(de)(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)等，且更換(huan)的(de)(de)(de)空氣(qi)(qi)斷路(lu)器(qi)仍(reng)要以向上(shang)操作(zuo)為合閘的(de)(de)(de)原(yuan)則安裝(zhuang)。配(pei)電(dian)(dian)箱(xiang)的(de)(de)(de)焊接、螺栓(shuan)連(lian)接均應(ying)牢固，焊縫應(ying)均勻、光潔、無焊皮、焊穿、氣(qi)(qi)孔等不良現象;螺栓(shuan)的(de)(de)(de)連(lian)接應(ying)有平(ping)、彈簧墊圈、外露(lu)絲扣(kou)2—5扣(kou)。配(pei)電(dian)(dian)箱(xiang)內部(bu)零件、開孔邊緣應(ying)平(ping)整(zheng)光滑。照明配(pei)電(dian)(dian)箱(xiang)的(de)(de)(de)箱(xiang)下(xia)底(di)與地(di)面(mian)的(de)(de)(de)垂(chui)直距離(li)宜大(da)于(yu)1。3m，小(xiao)于(yu)1。5m。移動式分配(pei)電(dian)(dian)箱(xiang)、開關箱(xiang)的(de)(de)(de)下(xia)底(di)與地(di)面(mian)的(de)(de)(de)垂(chui)直距離(li)宜大(da)于(yu)0。6m，小(xiao)于(yu)1。5m，并且移動式電(dian)(dian)箱(xiang)應(ying)安裝(zhuang)在固定(ding)的(de)(de)(de)金(jin)屬支架上(shang)。