1、直线段电缆桥架长度超越30m必需设置补偿安装，电缆桥架逾越建筑物变形缝处必需设置补偿安装。

1. Compensation installation is necessary when the length of cable bridge in straight section exceeds 30 m. Compensation installation is necessary when the cable bridge crosses the deformation joint of the building.

2、镀锌电缆桥架及其支架全长应不少于2处与接地（PE）干线相衔接。

2. The full length of galvanized cable bridge and its bracket shall be no less than two joints to the main line of ground (PE).

3、立柱、吊支架和托臂应布置合理，固定结实、平整。

3. Columns, suspension brackets and brackets should be reasonably arranged, fixed, firm and smooth.

4、电缆桥架与支架间螺栓、桥架衔接板螺栓固定紧固无遗漏，螺母位于桥架外侧。

4. The bolts between the cable bridge frame and the bracket and the connecting plate bolts of the bridge frame are fixed and fastened without omission. The nuts are located on the outside of the bridge frame.

5、支架与预埋件焊接固定时，焊缝丰满；收缩螺栓固定时，选用螺栓适配，衔接紧固，防松零件齐全。

5. When bracket and embedded parts are welded and fixed, the weld seam is plump; when shrinkage bolt is fixed, the bolt is selected to fit, the connection is tight, and the anti-loosening parts are complete.

6、电缆桥架及其支架和引入或引出的金属电缆导管必需接地（PE）牢靠。

6. The cable bridge and its brackets and the metal cable conduits introduced or extracted must be firmly grounded (PE).

7、电缆桥架转弯处的弯曲半径，不小于桥架内交联聚氯乙烯绝缘电力电缆小允许弯曲半径15D。

7. The bending radius at the bending point of the cable bridge is not less than 15D of the minimum allowable bending radius of the cross-linked PVC insulated power cable in the bridge frame.

8、镀锌电缆桥架间衔接板的两端不跨接接地线，但衔接板两端不少于2个有防松螺帽或防松垫圈的衔接固定螺栓。

8. The two ends of the connecting plate between galvanized cable bridges do not cross the ground wire, but at least two connecting fixed bolts with anti-loosening nuts or washers are at the two ends of the connecting plate.

9、电缆桥架与电气用具衔接紧密，导线无外露现象。

9. Cable bridge is closely connected with electrical appliances and conductors are not exposed.

10、电缆桥架程度或垂直敷设直线局部的平直水平和垂直度允许偏向不应超越5mm。

10. The allowable deviation of the horizontal and vertical degree of the cable bridge or the part of the vertical laying line should not exceed 5 mm.

11、电缆桥架程度装置的支架间距为1.5～3m；垂直装置的支架间距不大于2m。

11. The bracket spacing of cable bridge degree device is 1.5-3 m, and that of vertical device is not more than 2 m.

12、线路穿过梁、墙、楼板等处时，电缆桥架不应被抹死在建筑物上。

12. When the line passes through beams, walls, floors, etc., the cable bridge should not be smeared on the building.

13、敷设在竖井内和穿越不同防火区的电缆桥架，必需有防火隔堵措施，采用4mm厚钢板做防火隔板，用防火堵料封堵紧密。

13. Cable bridges laid in shafts and crossing different fire-proof zones must have fire-proof and blocking measures. 4 mm thick steel plate is used as fire-proof baffle, and the blocking is tight with fire-proof and blocking materials.

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