1、電纜橋架系統應具有可靠的電氣連接并接地（只對金屬橋架）。

1, cable tray system should have a reliable electrical connection and grounding (only on the metal bridge).

2、當允許利用電纜橋架系統構成接地干線回路時應符合下列要求。電纜橋架端部之間連接電阻應不大于0.00033歐姆，接地孔應絕緣涂層。在1KV及以下中性點直接接地系統中，受電設備的接地與系統中性線接地相連。裝有處動切斷供電裝軒時，橋架的級長方向金屬橫截面積應不小于規定值。

2, when allowed to use the cable tray system composed of grounding line circuits should meet the following requirements. Between the end of the cable connection resistance should be less than 0.00033 ohm, grounding hole should remove the insulating coating. In the 1KV and the following neutral point direct grounding system, the grounding of the electric equipment is connected with the grounding of the neutral grounding system. A dynamic assembly when the power supply is cut off, the prefect direction of metallic cross-sectional area should not be less than the specified value.

3、對于振動場所，在接地部位的連接處應裝置彈簧圈。

3, for the vibration place, in the grounding part of the connection of the device spring ring.

4、沿電纜橋架全長另敷設接地干線時，每段（包括非直線段）電纜橋架應少有一點與接地干線可靠連接。

4, along the cable tray full-length other laying ground lines, each (including non straight line segments) cable tray shall be at least a little and grounding line connection is reliable.

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