1、电缆桥架在室内布线时，其电缆不应覆盖黄麻或可燃物作为外保护层。

1. When cable trays are wired indoors, their cables should not be covered with yellow hemp or flammable materials as an external protective layer.

2、电缆桥架布线在腐蚀性或潮湿环境中使用时，应根据不同的腐蚀介质采取相应的防护措施，并选用塑料作为电缆的护套。

2. When cable tray wiring is used in corrosive or humid environments, corresponding protective measures should be taken according to different corrosive media, and plastic should be selected as the cable sheath.

3、电缆桥架需要水平安装时，其离地高度不得低于2.5米。电缆桥架垂直安装时，距地1.8米以下的部分，除敷设在电气专用房(如配电室、电气竖井、技术层等)内外，均应采用金属盖板保护。

3. When cable trays need to be installed horizontally, their height above the ground should not be less than 2.5 meters. When installing cable trays vertically, the parts below 1.8 meters from the ground, except for those laid inside and outside electrical special rooms (such as distribution rooms, electrical shafts, technical floors, etc.), should be protected by metal cover plates.

4、当电缆桥架需要水平安装时，应根据荷载曲线选择跨度进行支撑，跨度一般为1.5~3米。垂直敷设时，固定点间距不大于2m。

4. When cable trays need to be installed horizontally, the optimal span for support should be selected based on the load curve, typically ranging from 1.5 to 3 meters. When laying vertically, the spacing between fixed points should not exceed 2m.

5、多组电缆架在同一高度平行安装时，应考虑各相邻桥架之间的距离，以便维护和维修。

5. When multiple cable trays are installed in parallel at the same height, the distance between adjacent trays should be considered for maintenance and repair.

6、电缆也可无间隔地敷设在桥架上。电缆所在桥架截面填充率：电力电缆不大于40%;控制电缆不大于50%。

6. Cables can also be laid on cable trays without any gaps. The filling rate of the cable tray section where the cable is located: not more than 40% for power cables; The control cable should not exceed 50%.

7、不同电压、不同用途的电缆不应敷设在同一水平面上。

7. Cables with different voltages and purposes should not be laid on the same horizontal plane.

8、电缆桥架与各种管道平行或交叉时，其小间距应符合表DQ4-1的规定。

8. When cable trays are parallel or intersect with various pipelines, their minimum spacing should comply with the provisions of Table DQ4-1.

9、电缆桥架不应安装在腐蚀性气体管道、热力管道上方和腐蚀性液体管道下方，否则应采取防腐保温措施。

9. Cable trays should not be installed above corrosive gas pipelines, thermal pipelines, or below corrosive liquid pipelines, otherwise anti-corrosion and insulation measures should be taken.