电缆穿桥架或管道的区分应该严格按照图纸设计说明做，施工时可能会因为这个地方的电缆穿桥架，无论是在安全隐患、施工程序等方面都好，例如：多层及高层电气井道内电缆为穿桥架敷设，因为电缆多，桥架明装，出问题了也好维修，并且性价比还高；有些只需要一根电缆的线路基本都是穿管道，因为桥架相对于管道来说，一是无管道安装省时省力，二是有些地方管道可能会做暗装。

The distinction between cables passing through bridges or pipelines should be made in strict accordance with the design instructions of the drawings. During construction, it may be because of the cables passing through bridges in this place, whether in terms of safety hazards, construction procedures, etc. For example, the cables in multi-storey and high-rise electrical hoistways are laid through bridges, because there are many cables, the bridges are exposed, and it is easy to repair in case of problems, and the cost performance is also high; Some lines that only need one cable basically go through the pipe, because the bridge, relative to the pipe, is time-saving and labor-saving for pipeless installation, and the pipe may be concealed in some places.

此外 济南电缆桥架安装环境不同，要求不同。不同的安装环境，安装桥架需要接地措施。那么，哪些环境安装桥架需要接地呢?哪些环境安装桥架不需要接地呢?

In addition, the installation environment of Jinan cable bridge is different and the requirements are different. Different installation environments require grounding measures to install the bridge. So, which environments need to be grounded when installing the bridge? Which environments do not require grounding to install the bridge?

1.普通环境安装桥架不需要做接地;

1. Grounding is not required for bridge installation in common environment;

2.爆炸危险环境需要接地，因为静电的原因，发生释放静电火花达到爆炸临界值，会发生危险。所以这种环境下安装桥架需要做接地措施;

2. The explosion hazardous environment needs to be grounded. Because of the static electricity, the electrostatic discharge sparks reach the explosion critical value, which will cause danger. Therefore, it is necessary to take grounding measures when installing the bridge in this environment;

3.玻璃钢电缆桥架其表面处理可作镀锌或者静电喷塑或者热镀锌处理，这样方便接地;

3. The surface treatment of glass fiber reinforced plastic cable tray can be galvanized or electrostatic spraying or hot galvanizing, which is convenient for grounding;

4.桥架的首末两端须作接地，桥架连接部分做跨接。

4. Both ends of the bridge shall be grounded, and the bridge connection part shall be bridged.

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