電纜預(yù)留長(zhǎng)度表： 
1.電纜敷設(shè)弛度，波形彎度，交叉   預(yù)留長(zhǎng)度2.5%   按電纜全長(zhǎng)計(jì)算 

2.電纜進(jìn)入建筑物，       2米           規(guī)范規(guī)定最小值 

3.電纜進(jìn)入溝內(nèi)或吊架時(shí)引上       1.5米         規(guī)范規(guī)定最小值 

4.變電所進(jìn)線出線                  1.5米        規(guī)范規(guī)定最小值 

5.電力電纜終端頭                  1.5米        檢修余量最小值  

6.電纜進(jìn)控制保護(hù)屏                高+寬        按盤面尺寸

 7.高壓開(kāi)關(guān)柜低壓配電盤，箱        2米          盤下進(jìn)出線 
8.電纜至電動(dòng)機(jī)                    0.5米        從電機(jī)接線盒起算 

9.廠用變壓器                      3米         從地坪起算

10.電纜過(guò)梁柱等增加長(zhǎng)度          按實(shí)計(jì)算 
11.電梯電纜與電纜架固定點(diǎn)        每處0.5米     規(guī)范最小  
電纜預(yù)留按計(jì)算規(guī)則2米 電纜頭的長(zhǎng)度不用預(yù)留 導(dǎo)線的預(yù)留長(zhǎng)度是半周長(zhǎng)  
軟件中只有裸線或者穿線槽或者橋架的電纜才計(jì)算預(yù)留長(zhǎng)度，軟件中電纜長(zhǎng)度和預(yù)留長(zhǎng)度分開(kāi)單獨(dú)一列，最后通過(guò)電纜長(zhǎng)度手動(dòng)乘以1.025即可