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b.Leadsofdifferentsystems,differentcircuits(exceptforilluminationcircuits),differentvoltages,andACandDCshallnotbelaidoutinthesamepipe.不同系统，不同回路（照明灯回路除外），不同电压等级，交流与直流的导线不得在同一管内敷设。

c.Theremustbeprotectionsforinletsandoutletsofleads.Noconnectionsortwistsinthepipe.Connectionsmustbemadeinthejunctionbox.Thetotalsectionareaofallleadsshallnotexceed40%ofthatofthepipe.Thetotalsectionareaofwiringfittingsandleadsintheductshallnotexceed60%ofthatoftheduct.Thequantityofwireinvariouspipesshallbecarriedoutasperthedesigninstruction;ifnotindicated,refertoTable

2:导线进、出管时必须有护口，在管内不得有接头和扭结，接头必须在接线盒内进行，管内导线的总截面不应超过管子截面积的40%，线槽内配线，导线的总截面积不应大于线槽截面积的60%，各类管子内的穿线根数根据设计说明，如无说明参见表2：

芯线截面（mm2）Sectionofcoreline(mm2)

30-外墙保温工程施工方案编制指南（外保温）.docx镀锌钢管直径Diameterofgalvanizedsteelpipe

镀锌电管直径Diameterofgalvanizedelectronicpipe

于0.5MΩ（摇表采用1KV兆欧表）。

b.Afterfinishinginstallationofcablebridgesandsupportsinthecabletrench,andearthing,laycablesafterinspectionsandconfirmation.电缆桥架，电缆沟内支架安装结束，接地（PE）完成，经检查确认后，才能敷设电缆。

c.Whenlayingcables,itmustbedirectedbyspecialpersonnel.Cablesshallbeintroducedfromtheupperendofthecabledrum.Nofrictionandpullingofcablesandcableracksispermitted.Controltheloosenessofcablesonthecabledrum.电缆敷设时，须专人指挥，电缆应从电缆盘上端引出，敷设时，禁止电缆与电缆架摩擦拖拉，并控制电缆在盘上的松弛度。

d.Whenlayingcables,ensurecablesarrangedinlines.Theminimumcurveradiusatthecorneris15D.电缆敷设，必须排列整齐，转弯处的最小允许弯曲半径为15D。

e.Buriedcablelaying:Armoredcablesareadoptedforburiedcables.Spreadsandof100mmthickatthebottomofthetrenchfirstly,andspreadsandof100mmthickafterlayingcables,andcoverwithbricks,andbackfillwithsoils.Aprotectionpipeisnecessaryforthecablepassingthrougharoadorenteringabuilding.Thepartspreadoutoftheroadbaseorabuildingshallnotshorterthan1m.Cablesshallnotbelaidparalleledaboveorbelowpipes.Thespacebetweentheelectricalcablesandthecontrolcablesshallnotbeshorterthan100mm.Aburiedcableshallbeatleast1mawayfromathermalpipeparalleledwiththecable,atleast500mmawayfromathermalpipecrossingwiththecable,andatleast600mmawayfromthefoundation.Ifnotmeetingsuchrequirements,itshallberesolvedbytheE&MengineerandthedesigninstituteandtheOwnerthroughconsultation.直埋电缆的敷设：直埋电缆采用铠装电缆，应在沟底先铺100mm厚的砂，待电缆敷设后再铺100mm的砂，然后盖红砖，最后回填土，电缆穿越道路或进建筑物必须穿风保护管，伸出路基或建筑物处不小于1m，电缆不得平行敷设在管道的上方或下方，电力电缆与控制电缆之间距离不小于100mm。直埋电缆与热力管道平行距离不小于1m，交叉距离不小于500mm,与基础距离不小于600mm。如满足不了要求，则需由机电工程师会同设计院、业主协调解决。

g.Whenlayingthecablesinthebridge,theyarearrangedorderlyandfixedwithnylonband.Thedistanceisunchanged:thedistancecannotexceed1.5mforverticalsectionandthatofthehorizontalsectioncannotexceed3m.电缆在桥架内敷设时，应排列整齐，应以尼龙扎带固定，固定间距：垂直段不超过1.5m，水平段不超过3m。

6）Connectionoftheelectricwireandcables:电线电缆的连接：

a.Thefabricationoftheindoorcablesadoptsdrypackingtype.Thesheathsofthecablesarecutaccordingtotheactualsituation.户内电缆头制作采用干包式，电缆护套剥切应根据实际情况来确定。

b.Insulatedconductorsofthecuttingwiresandcablecoresdonotdamagethecores.剥切电线、电缆芯线的绝缘层不应损伤线芯。

7）Installationoftheelectricdevices电气器具的安装

b.Theheightoftheinstallation(thedistancebetweenthebaseandtheearth):Lightingswitchis1.4m,socket0.3m,thesocketinthewashingroom1.4m,thefancoiltemperaturecontroller1.4m,0.2mforexitlightonthedoorframeandthelightingdistributionbox1.4m.安装高度（底边距地）：照明开关为1.4m；插座为0.3m；卫生间插座为1.4m；风机盘管温控器为1.4m；门头安全出口灯在门框上0.2m；照明配电箱为1.4m。

c.Theswitchesonthedoorare150~200mwiththedoorframe.Theheightdeviationoftheswitchesandsocketsonthesameplacecannotexceed5mm.Theheightdeviationoftheswitchesandsocketsparallelyinstalledcannotexceed0.5mm.Theverticalitydeviationofthepanelsshallbelessthan0.5mm.Andthelightersarrangedareinalineandthecenterdeviationshallbelessthan5mm.Embeddeddistributionboxandthepanelofthecontrolboxaretouchedclosely.Therequirementsforopenandcloseboxesfollowedas:Forthoselessthan500mm,theverticalitydeviationshallbelessthan2mmandforthosehigherthan500mm,theverticalitydeviationshallbelessthan5mm.在门边安装的开关距门框150~200mm,同一场所安装的开关、插座允许高差不大于5mm，并列安装的开关插座允许高差不大于0.5mm，面板垂直度偏差不大于0.5mm,同一室内成排灯具应成一线，其中心偏差不大于5mm；嵌墙安装的配电箱，控制箱其面板与墙面紧贴，明、暗箱的垂直度要求：高度不大于500mm的，其垂直度偏差不大于2mm，大于500mm的，其垂直度偏差不大于5mm。

e.Embedfluorescentlampadoptsseekchainortheroundsteelhungonthecentralterminalsandtheweightofthelampscannotbringtheloadtothehungandnarrowanglemetalhalidelampsintheworkshopshungtheoutsideofthelastquarterofsteelroof.Thelamppowercordsshallbeprotectedbythemetalhoses,leadintothelampsandtheedgesof嵌顶灯shalltouchcloselytothebuttedbridgingjoint.Themetalhousesofthelampsmustbeearthing.嵌入式荧光灯采用瓜子链条或圆钢吊挂在楼板下方，灯具自重不应对吊顶构成荷重，车间深照型金卤灯，吊挂在钢结构屋架下弦外，灯具电源线应穿金属软管保护，引到灯具内，嵌顶灯边缘应紧贴在顶栅上，灯具的金属外壳必须接地（PE）。

Table3PermittedDeviationforFoundationTypeSteel表3基础型钢安装允许误差

PermittedDeviation允许误差

Fulllengthmm/全长

Horizontality水平度

PermittedDeviation

Verticality垂直度（mm/m）

Arrangedcoilface成列盘面

9）Installationofthetransformer变压器安装

a.Whensecondaryconveyanceofthetransformerandpositioning,donotdamagetheinsulators,thecoolingpipesandtheshells,etc.变压器在二次搬运中，就位过程中，不得损坏绝缘子，油箱冷却管，外壳等附件。

b.Beforepositioningthetransformer,checkthewheelspanisconsistentwiththefoundationgauge.Afterpositioning,findthehorizontality.Fortheroller,adopttheremovablebrakedevicestofasten.Therollershallappliedwiththebeeffactforrustresistance.变压器就位前应检查轮距与基础轨距是否一致，就位后应找正水平度，其滚轮应用可拆卸的制动装置加以固定，滚轮应牛油防锈。

d.Afterthetransformerisdeliveredtotheinstallationsite,checkthebodiesandinsulatorsarefreefromthecracks,damagedandtheindicationofthetemperaturemetersiscorrectaspertherequirementsofthetechnicaldocuments.变压器到达安装现场后，应按产品技术文件要求进行检查，器身、绝缘件应无裂纹、缺损，测温仪表指示准确。

华能北京热电有限责任公司3、4号锅炉脱硝工程施工组织设计10）Smallconnection二次接线

c.Theconductorendmustbeprovidedwiththenumbers,clearlyandreliably.导线端部必须套标志管编号，且字迹清晰，牢靠。

11)Lighteningandearthingsystem防雷、接地系统

b.Theearthingresistanceofthedistributionneutralpointshallbelessthan4Ωandtheresistanceofthelighteningandearthingshallbelessthan1Ω.配电中性点接地电阻不大于4Ω，Theresistanceofthelighteningandearthingshallbelessthan1Ω.厂房防雷接地电阻不大于1Ω。

c.Lighteningandearthingsystemshallfollowthedrawingsforconstruction.Accordingtothedesignrequirements,setuptherelevanttestingpoints.Allmaterialsshallbehotgalvanizing.避雷、接地系统严格按设计图施工，根据要求设立有关测试点，所有的材料均应使用热镀锌材料。

d.Thesteelpoleisusedasthelighteningdownlead.Themainreinforcementofthedownleadshallbeweldedandthetopisweldedwiththelighteningbandandthelowerendisweldedwithreinforcementinthepiles.利用钢柱作为防雷引下线，引下线的主筋应焊接，其上端与避雷带焊接，下端与砼桩内立筋焊接

g.Whenthefoundationringbeampassingtheexpansiblejoints,adoptthegalvanizedflatsteel(40×4)for跨焊.基础圈梁过伸缩缝处，应用镀锌扁钢（40×4）跨焊。

j.Overlaplength:Twiceofthewidthoftheflatsteel,6timesoftheroundsteel.Afterwelding,removetheweldingslagandapplythepaintingforrustresistance,coveredwithsilverpowerpainting,suchasburying,andapplyingthepitchforcorrosionresistance.搭接长度：扁钢，宽度的两倍；园钢为直径的6倍，焊接后，除去焊渣、刷防绣漆防腐T／CECS608-2019标准下载，并刷银粉漆盖面，如埋地，刷沥青防腐。