每(mei)臺用(yong)電(dian)(dian)(dian)設備(bei)應有各(ge)自的(de)(de)(de)的(de)(de)(de)開(kai)(kai)(kai)關(guan)箱。施工現場每(mei)臺用(yong)電(dian)(dian)(dian)設備(bei)應有各(ge)自的(de)(de)(de)開(kai)(kai)(kai)關(guan)箱，且(qie)必須滿足“一(yi)機一(yi)閘一(yi)漏(lou)”要求，嚴(yan)禁用(yong)同一(yi)個(ge)開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)器(qi)直接控制兩臺及兩臺以上用(yong)電(dian)(dian)(dian)設備(bei)(包含插座)。配電(dian)(dian)(dian)箱、開(kai)(kai)(kai)關(guan)箱內的(de)(de)(de)電(dian)(dian)(dian)器(qi)（含插座）應先安裝(zhuang)在(zai)金(jin)屬(shu)或非木質阻燃絕緣電(dian)(dian)(dian)器(qi)安裝(zhuang)板(ban)上，然后(hou)方可整體緊固(gu)(gu)在(zai)配電(dian)(dian)(dian)箱、開(kai)(kai)(kai)關(guan)箱箱體內。金(jin)屬(shu)電(dian)(dian)(dian)器(qi)安裝(zhuang)板(ban)與金(jin)屬(shu)箱體應做電(dian)(dian)(dian)氣連接。新(xin)增負載時(shi)，二級(ji)配電(dian)(dian)(dian)箱價格，需(xu)考慮新(xin)增電(dian)(dian)(dian)流是否超出控制該回路(lu)空氣斷路(lu)器(qi)的(de)(de)(de)額定電(dian)(dian)(dian)流。超出時(shi)需(xu)更(geng)換成相應容量(liang)的(de)(de)(de)空氣斷路(lu)器(qi)。更(geng)換空氣斷路(lu)器(qi)前要斷電(dian)(dian)(dian)，更(geng)換后(hou)要固(gu)(gu)定牢固(gu)(gu)。

配(pei)電(dian)(dian)(dian)(dian)箱(xiang)、開關箱(xiang)內(nei)的電(dian)(dian)(dian)(dian)器（含插座）應(ying)先安裝(zhuang)在金(jin)屬或非木質阻燃(ran)絕緣電(dian)(dian)(dian)(dian)器安裝(zhuang)板(ban)(ban)上，然后方(fang)(fang)可整體(ti)緊固在配(pei)電(dian)(dian)(dian)(dian)箱(xiang)、開關箱(xiang)箱(xiang)體(ti)內(nei)。金(jin)屬電(dian)(dian)(dian)(dian)器安裝(zhuang)板(ban)(ban)與金(jin)屬箱(xiang)體(ti)應(ying)做電(dian)(dian)(dian)(dian)氣(qi)連接(jie)。配(pei)電(dian)(dian)(dian)(dian)箱(xiang)均要求能在三級污染的條件(jian)下運行，即配(pei)電(dian)(dian)(dian)(dian)箱(xiang)的防(fang)護等級達到IP3X。所有箱(xiang)體(ti)用(yong)的鋼板(ban)(ban)，型(xing)鋼必須在噴涂前(qian)進(jin)(jin)行除油(you)、除銹(xiu)磷化處(chu)理，其(qi)他(ta)金(jin)屬件(jian)均應(ying)要有防(fang)腐能力，為了(le)方(fang)(fang)便(bian)(bian)使用(yong)和(he)延長(chang)配(pei)電(dian)(dian)(dian)(dian)箱(xiang)使用(yong)壽(shou)命，應(ying)該(gai)將其(qi)安置(zhi)在干燥度高、便(bian)(bian)于通風、采光良好的地方(fang)(fang)，只要不(bu)影響美觀和(he)妨礙使用(yong)即可。配(pei)電(dian)(dian)(dian)(dian)箱(xiang)盡量靠近用(yong)電(dian)(dian)(dian)(dian)量大、用(yong)電(dian)(dian)(dian)(dian)設備多以及(ji)進(jin)(jin)出線方(fang)(fang)便(bian)(bian)的地方(fang)(fang)。

為(wei)了方(fang)(fang)便(bian)使用和延長配(pei)(pei)電(dian)箱(xiang)使用壽命，應(ying)該(gai)將其(qi)安(an)置在(zai)干(gan)燥(zao)度高、便(bian)于(yu)通風、采(cai)光(guang)良好的(de)地方(fang)(fang)，只要(yao)不(bu)影響(xiang)美觀(guan)和妨礙使用即可(ke)。配(pei)(pei)電(dian)箱(xiang)盡量靠(kao)近用電(dian)量大、用電(dian)設備多以及進出(chu)線方(fang)(fang)便(bian)的(de)地方(fang)(fang)。配(pei)(pei)電(dian)箱(xiang)內(nei)電(dian)器(qi)(qi)選擇不(bu)當(dang)引起的(de)故障(zhang)：由于(yu)在(zai)制造時(shi)對交流(liu)(liu)接觸器(qi)(qi)容(rong)量選擇不(bu)很恰當(dang)，對不(bu)同(tong)出(chu)線回路安(an)裝(zhuang)同(tong)容(rong)量的(de)交流(liu)(liu)接觸器(qi)(qi)，且未(wei)考(kao)慮到三相負(fu)荷的(de)不(bu)平衡情況，配(pei)(pei)電(dian)箱(xiang)、開(kai)關(guan)箱(xiang)內(nei)的(de)電(dian)器(qi)(qi)（含插座）應(ying)先安(an)裝(zhuang)在(zai)金(jin)屬或非木質阻燃絕緣電(dian)器(qi)(qi)安(an)裝(zhuang)板上，然后(hou)方(fang)(fang)可(ke)整體緊(jin)固在(zai)配(pei)(pei)電(dian)箱(xiang)、開(kai)關(guan)箱(xiang)箱(xiang)體內(nei)。金(jin)屬電(dian)器(qi)(qi)安(an)裝(zhuang)板與金(jin)屬箱(xiang)體應(ying)做電(dian)氣(qi)連(lian)接。