新增(zeng)負(fu)載時，需考慮新增(zeng)電(dian)(dian)流是(shi)否超(chao)出(chu)控制該回路空(kong)氣斷(duan)路器的額定電(dian)(dian)流。超(chao)出(chu)時需更換(huan)成(cheng)相應(ying)容量的空(kong)氣斷(duan)路器。更換(huan)空(kong)氣斷(duan)路器前(qian)要斷(duan)電(dian)(dian)，更換(huan)后(hou)要固定牢固。配(pei)(pei)電(dian)(dian)箱(xiang)(xiang)(xiang)、開關(guan)箱(xiang)(xiang)(xiang)內(nei)的電(dian)(dian)器（含(han)插(cha)座）應(ying)先安裝(zhuang)在金(jin)屬(shu)或非木(mu)質(zhi)阻燃絕緣電(dian)(dian)器安裝(zhuang)板上，然后(hou)方可整體緊(jin)固在配(pei)(pei)電(dian)(dian)箱(xiang)(xiang)(xiang)、開關(guan)箱(xiang)(xiang)(xiang)箱(xiang)(xiang)(xiang)體內(nei)。金(jin)屬(shu)電(dian)(dian)器安裝(zhuang)板與金(jin)屬(shu)箱(xiang)(xiang)(xiang)體應(ying)做電(dian)(dian)氣連接。高(gao)壓配(pei)(pei)電(dian)(dian)室(shi)(shi)應(ying)為一、二級(ji)耐(nai)火(huo)(huo)等級(ji)建(jian)筑。低(di)壓配(pei)(pei)電(dian)(dian)室(shi)(shi)的耐(nai)火(huo)(huo)等級(ji)不應(ying)低(di)于三(san)級(ji)。配(pei)(pei)電(dian)(dian)室(shi)(shi)的窗應(ying)有防(fang)水(shui)、防(fang)雨雪、防(fang)小動物進入的措(cuo)施。高(gao)、低(di)壓配(pei)(pei)電(dian)(dian)裝(zhuang)置同在一室(shi)(shi)時，它(ta)們之間的距(ju)離應(ying)不小于1米(mi)。

配(pei)電(dian)(dian)箱(xiang)(xiang)內電(dian)(dian)器(qi)(qi)選擇不當引起的(de)故障：由(you)于(yu)在制(zhi)造時對交流(liu)接觸器(qi)(qi)容量(liang)(liang)選擇不很恰當，對不同出線(xian)(xian)(xian)回路安裝同容量(liang)(liang)的(de)交流(liu)接觸器(qi)(qi)，且未考慮到三(san)相負荷的(de)不平衡情況，總配(pei)電(dian)(dian)箱(xiang)(xiang)電(dian)(dian)器(qi)(qi)額(e)定(ding)(ding)(ding)值、動(dong)作(zuo)(zuo)整定(ding)(ding)(ding)值，應(ying)與分路開關(guan)電(dian)(dian)器(qi)(qi)的(de)額(e)定(ding)(ding)(ding)值、動(dong)作(zuo)(zuo)整定(ding)(ding)(ding)值相適(shi)應(ying)。并(bing)裝設總自(zi)動(dong)開關(guan)、漏電(dian)(dian)保護器(qi)(qi)和分路自(zi)動(dong)開關(guan)。各級配(pei)電(dian)(dian)箱(xiang)(xiang)中使用的(de)各種(zhong)電(dian)(dian)氣元件(jian)和漏電(dian)(dian)保護器(qi)(qi)應(ying)符合質量(liang)(liang)要(yao)求。連(lian)接線(xian)(xian)(xian)要(yao)使用絕緣(yuan)導線(xian)(xian)(xian)，不得(de)有漏電(dian)(dian)部分。工作(zuo)(zuo)零(ling)線(xian)(xian)(xian)要(yao)通(tong)過接線(xian)(xian)(xian)端子(zi)板(ban)(ban)連(lian)接，配(pei)電(dian)(dian)箱(xiang)(xiang)價格，與保護零(ling)線(xian)(xian)(xian)接線(xian)(xian)(xian)端子(zi)板(ban)(ban)分設；金屬(shu)箱(xiang)(xiang)體、電(dian)(dian)器(qi)(qi)安裝板(ban)(ban)以及電(dian)(dian)器(qi)(qi)的(de)不應(ying)帶電(dian)(dian)金屬(shu)底(di)座，外(wai)殼必(bi)須(xu)有接零(ling)措施。

照明配(pei)(pei)電(dian)箱(xiang)的(de)箱(xiang)下(xia)底與地面(mian)的(de)垂(chui)直(zhi)(zhi)距(ju)(ju)離宜大(da)于(yu)1。3m，小于(yu)1。5m。移(yi)動式分配(pei)(pei)電(dian)箱(xiang)、開關箱(xiang)的(de)下(xia)底與地面(mian)的(de)垂(chui)直(zhi)(zhi)距(ju)(ju)離宜大(da)于(yu)0。6m，小于(yu)1。5m，并且移(yi)動式電(dian)箱(xiang)應安(an)裝在固定的(de)金屬(shu)支架上。配(pei)(pei)電(dian)箱(xiang)的(de)外涂(tu)層顏色應根據甲(jia)方的(de)要(yao)求進(jin)行靜電(dian)噴塑，涂(tu)層應附著牢固，顏色均勻，無皺i紋、剝落(luo)、斑點、漏(lou)噴等不(bu)良現象，在距(ju)(ju)離1米處觀察無明顯(xian)色差和反光(guang)，表面(mian)平整、干(gan)(gan)凈，無凹坑(keng)、劃痕(hen)等損傷現象。為了(le)方便(bian)使用(yong)(yong)(yong)和延長配(pei)(pei)電(dian)箱(xiang)使用(yong)(yong)(yong)壽(shou)命(ming)，應該將其(qi)安(an)置(zhi)在干(gan)(gan)燥度高、便(bian)于(yu)通風、采光(guang)良好的(de)地方，只要(yao)不(bu)影響美(mei)觀和妨礙(ai)使用(yong)(yong)(yong)即可。配(pei)(pei)電(dian)箱(xiang)盡量靠近用(yong)(yong)(yong)電(dian)量大(da)、用(yong)(yong)(yong)電(dian)設備多以及進(jin)出線方便(bian)的(de)地方。