南昌橋架是用(yong)(yong)銅排或鋁作(zuo)為導電(dian)(dian)體，電(dian)(dian)流(liu)(liu)容(rong)量很(hen)大(da)而且(qie)電(dian)(dian)氣和(he)機械(xie)性(xing)(xing)能好，另外(wai)(wai)(wai)用(yong)(yong)金(jin)屬槽(cao)作(zuo)為外(wai)(wai)(wai)殼，所(suo)以(yi)具有(you)不燃燒，橋架制作(zuo)，性(xing)(xing)高，且(qie)使用(yong)(yong)壽(shou)命長，與傳統(tong)(tong)(tong)的(de)(de)配電(dian)(dian)或比較(jiao)，設(she)備所(suo)占面積顯著減少，并且(qie)外(wai)(wai)(wai)觀美(mei)觀，對于大(da)型(xing)建筑(zhu)物的(de)(de)施工和(he)配電(dian)(dian)非常有(you)利，概(gai)括起來母(mu)線槽(cao)具有(you)下列特點：1、電(dian)(dian)流(liu)(liu)容(rong)量可以(yi)很(hen)大(da)；2、電(dian)(dian)壓降很(hen)小；3、短(duan)路(lu)負(fu)載能力強；4、可靠性(xing)(xing)高，使用(yong)(yong)壽(shou)命長；5、安全性(xing)(xing)高；6、配電(dian)(dian)系統(tong)(tong)(tong)的(de)(de)設(she)備增加或變(bian)更(geng)隨(sui)意(yi)自如；7、外(wai)(wai)(wai)形尺(chi)寸(cun)小；8、重量輕(qing)，操(cao)作(zuo)容(rong)易；9、連接非常簡單(dan)(如同連接用(yong)(yong)水管(guan)道(dao)一般，一節節通(tong)過三通(tong)、彎頭等接頭使連接成(cheng)一個系統(tong)(tong)(tong))如下圖；10、施工和(he)檢(jian)查(cha)簡單(dan)；11、具有(you)現代的(de)(de)美(mei)觀。

南昌電纜橋架(jia)可以和(he)工(gong)藝管道(dao)共架(jia)敷設，不單獨占用電纜通(tong)道(dao)，節省(sheng)空間，上猶(you)橋架(jia)，同時也避免了和(he)地(di)下管線交(jiao)問題。

電(dian)纜(lan)敷(fu)設在(zai)空氣中(zhong)，散熱條(tiao)件比(bi)電(dian)纜(lan)隧道(dao)好，且不必通風(feng)排水，運行費用低， 一旦電(dian)纜(lan)發生(sheng)故障(zhang)，處理也很方便。

裝置擴建時，增設的新電(dian)纜(lan)，可充(chong)分利用電(dian)纜(lan)橋架的備用位(wei)置，十(shi)分方便。

隨著火災報警(jing)(jing)系列產品的日趨完善，可利用纜(lan)式探(tan)測器對電纜(lan)進行(xing)監護，一旦某處(chu)溫度(du)過高，超過了探(tan)測器的設(she)定值，可及時報警(jing)(jing)，使值班(ban)人員及時巡檢，消(xiao)除隱患，以防(fang)造成事故。

電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)橋架(jia)(jia)與其(qi)他電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)敷設方(fang)式(shi)相比，具(ju)有(you)明(ming)顯的優點，不(bu)(bu)論廠區主干線路或(huo)某個裝置內的配線，防火電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)橋架(jia)(jia)，均可采用(yong)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)橋架(jia)(jia)敷設方(fang)式(shi)。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)直埋(mai)(mai)雖(sui)然(ran)土建造(zao)價(jia)較(jiao)低，但(dan)其(qi)占(zhan)地面積大，裝置擴建時增加電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)要重新開挖(wa)，常因(yin)擴建施工等損壞電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，造(zao)成停電(dian)(dian)(dian)(dian)事故(gu)，且(qie)事故(gu)處(chu)理困難，橋架(jia)(jia)廠，恢復(fu)供電(dian)(dian)(dian)(dian)所(suo)需時間較(jiao)長，電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)直埋(mai)(mai)時需選用(yong)鎧(kai)裝電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，其(qi)價(jia)格比一(yi)般電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)貴(gui)，彎曲不(bu)(bu)便。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)溝方(fang)案雖(sui)然(ran)和(he)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)直埋(mai)(mai)相比，具(ju)有(you)一(yi)定(ding)的靈活性，但(dan)石化(hua)企業大多(duo)(duo)都是場所(suo)，電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)溝易(yi)聚集危險氣(qi)體，造(zao)成隱患，并且(qie)化(hua)工地表(biao)水大多(duo)(duo)含有(you)化(hua)工物料，時間長了，必然(ran)會對電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)溝造(zao)成污染。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)溝一(yi)般深(shen)一(yi)米左右，上有(you)蓋板(ban)，人員(yuan)巡檢多(duo)(duo)有(you)不(bu)(bu)便。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)隧道(dao)雖(sui)然(ran)具(ju)有(you)維修，增加電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)方(fang)便的特點，但(dan)因(yin)它處(chu)在地下，電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)多(duo)(duo)散(san)熱條件(jian)差，一(yi)般需強制(zhi)通風(feng)，時時還受到滲漏(lou)的困擾，需定(ding)期排水，運行費(fei)用(yong)高(gao)。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)隧道(dao)只能在電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)集中(zhong)地段使用(yong)，電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)引出后，仍需采用(yong)直埋(mai)(mai)或(huo)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)溝方(fang)式(shi)，不(bu)(bu)可避免地又出現了該方(fang)式(shi)的缺點。

確定始端與終端位置

根(gen)據施工圖確定(ding)始端(duan)到終端(duan)位(wei)置，沿(yan)圖紙標定(ding)走向(xiang)，找好水平(ping)、垂直、彎(wan)通，用粉線(xian)袋或畫(hua)(hua)線(xian)沿(yan)橋(qiao)架(jia)走向(xiang)在墻壁、頂棚、地面、梁、板(ban)、柱(zhu)等(deng)處(chu)彈線(xian)或畫(hua)(hua)線(xian)，并均勻檔距(ju)畫(hua)(hua)出支(zhi)、吊、托(tuo)架(jia)位(wei)置。

三、預埋(mai)鐵件或膨脹(zhang)螺(luo)栓

1、預埋鐵件的(de)自(zi)制加工(gong)不(bu)應小于120mm×80mm×6mm，其錨固圓鋼的(de)直徑不(bu)小于10mm。

2、緊(jin)密配合土建結(jie)構的(de)(de)(de)施工(gong)，將預(yu)埋鐵件平面(mian)緊(jin)貼模板(ban)，將錨固圓(yuan)鋼(gang)用綁扎或(huo)焊接的(de)(de)(de)方法(fa)固定(ding)在結(jie)構內的(de)(de)(de)鋼(gang)筋上；待混(hun)凝土模板(ban)拆除后，預(yu)埋鐵件平面(mian)外露(lu)，將支架(jia)(jia)、吊架(jia)(jia)或(huo)托架(jia)(jia)焊接在上面(mian)進行固定(ding)。

3、根據支(zhi)架(jia)承受的(de)(de)荷重，選擇相(xiang)應(ying)(ying)的(de)(de)膨脹(zhang)螺栓(shuan)及鉆頭；埋好螺栓(shuan)后，可用(yong)螺母配上(shang)相(xiang)應(ying)(ying)的(de)(de)墊圈將支(zhi)架(jia)或吊架(jia)直接(jie)固(gu)定在金屬膨脹(zhang)螺栓(shuan)上(shang)。