When we lay cables on the cable bridge, in order to ensure safety, we should follow certain principles, such as: the following different voltages, different uses of cables, should not be laid on the same bridge.

1、lkV以上和1kV以下的电缆。

1. Cables above lkV and below 1kV.

2、同一路径向一级负荷供电的双路电源电缆

2. Dual power supply cables supplying power to primary load in the same path

3、应急照明和其他照明的电缆。

3. Cables for emergency lighting and other lighting.

4、强电和弱电电缆。

4. Strong and weak electric cables.

5、如受条件限制需安装在同一层桥架上时，应用隔板隔开。

5. If the condition restricts the installation on the same deck, the partition shall be applied.

6、电缆桥架与各种管道平行或交叉时，其小净距应符合表DQ4-1的规定。

6. When the cable bridge is parallel to or intersected with various pipelines, the minimum net distance shall be in accordance with Table DQ4-1.

7、电缆桥架安装不宜安在腐蚀性气体管道和热力管道的上方及腐蚀性液体管道的下方，否则应采取防腐、隔热措施。

7. Cable bridge erection should not be installed above corrosive gas pipeline and thermal pipeline and below corrosive liquid pipeline. Otherwise, anti-corrosion and heat insulation measures should be taken.

8、电缆桥架内的电缆应在下列部位进行固定。垂直敷设时，电缆的上端及每隔1．50～2m处。水平敷设时，电缆的首、尾两端、转弯及每隔5～10m处。

8. The cables in the cable bridge shall be fixed at the following parts. When the cable is laid vertically, the upper end of the cable and every 1.50-2 m place. When laying horizontally, the first and last ends of the cable, turning and every 5-10 m place.

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