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Home > News>How should the lighting bridge choose the grounding wire?

How should the lighting bridge choose the grounding wire?

  2018-08-24 09:43       

As we all know, the lighting bridge needs to use the grounding wire in some cases. Under what circumstances will it be used? If you need to use the grounding wire, what are the requirements for the grounding wire?

First, in what circumstances. For example, in the place where there are many power-on cables, large load, easy to conduct electricity or generate static electricity, or where people may come into contact, the ground wire is required.


Lighting Bridge


So what are the requirements for the grounding wire? Before we introduced the grounding section cross-sectional area requirements of a metal bridge, it has been said that if the lighting bridge is laid straight in the electric shaft, a straight copper row (or galvanized flat steel) is provided in the shaft as the PE trunk.
At this moment, the lighting bridges of each section need only equipotential bonding. Since the joint line for electrical safety only conducts potentials at the moment, does not transmit current or only conducts a small part of the current, the cross section of the cable bridge grounding maintenance line can be 4:1.

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