What factors will affect the quality of cable tray? For example, galvanized bridge, the most influential is the thickness of the bridge raw material itself, the thickness is different, the strength of the bridge is different, if too thin, very simple bridge will be weighted, gravity bending, resulting in all beautiful deterioration, even if it may affect the installation construction, eventually lead to the project can not be verified.

讓質量牢靠電纜橋架才會質量一流，質量關于橋架而言，重要性幾乎顯而易見，想噴塑防火型電纜橋架，不僅僅厚度有影響，噴塑的質量、不要緊都對產品自身有較大的影響，即便不是橋架職業，其他任何職業都相同，質量就是產品的生命線，守住質量，才干守得住企業發展的根基，切不可為了短期利益，用劣質產品套住客戶。

The quality of the cable bridge will be first-class, quality of the bridge, the importance of almost obvious, want to spray fire-proof cable bridge, not only the thickness of the impact, spray quality, not matter on the product itself have a greater impact, even if not the bridge occupation, any other occupation is the same, quality Is the lifeline of the product, to maintain quality, ability to maintain the foundation of enterprise development, must not for short-term interests, with inferior products to cover customers.

電纜橋架在一些情況下是需求用到接地線的，那么在什么情況下才會用到呢？假如需求用到接地線，又對接地線有什么要求呢？

In some cases, the cable bridge is required to use the ground wire, then in what circumstances will it be used? If the demand is grounded, what are the requirements for grounding?

首要，在什么環境下用到。比如說，在通電線纜較多，負載量較大，簡單導電或發生靜電，或許有可能人會接觸到的地方，都要求運用接地線，吧可能存在的靜電等接地。

First and foremost, under what circumstances. For example, in places where there are more wires and cables, more loads, simple conduction or static electricity, which may be touched by people, grounding wires are required, such as static electricity which may exist.

那么對接地線有什么要求嗎？之前咱們介紹過一篇金屬橋架的接地線截面面積要求，里邊有說過，若金屬電纜橋架垂直敷設在電氣豎井內，豎井內設有一條垂直的銅排(或鍍鋅扁鋼)作為PE干線，此時各段電纜橋架僅需作等電位聯合，因為此時用于電氣的聯合線只傳導電位，不傳送電流或只傳導少部分的電流，所以電纜橋架接地保護線截面可按4.1需求進行選擇。

So what are the requirements for grounding? Before we introduced a section area requirement for the ground wire of a metal bridge, it was said that if the metal cable bridge is laid vertically in an electrical shaft and a vertical copper bar (or galvanized flat steel) is installed in the shaft as the PE trunk line, then the cable bridge only needs to be equipotentially combined because it is used for electrical safety at this time. The combined line conducts only potential, no current or only a small part of the current, so the cable bridge grounding protection line section can be selected according to 4.1 requirements.

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