弱電機房接地是為防雷、防強電、防電磁感應、防電腐蝕、防通信干擾，以及作為保障通信正常工作和保護人身安全而設。

地下引接線及地上裸導體的連接等，應採取以下減少電化學腐蝕的措施：

· 接地體應採用鍍鋅鋼材、鑄鋼材、銅材或石墨電極;

· 減少聯合接地系統的直流工作電流;

· 保護接地系統應沒有直流或交流電流;

· 引入電纜應採用有絕緣外護套電纜或將護套與室內接地系統加絕緣措施;

· 不同金屬線連接時，盡量採用熔接，當採用緊固件連接時，連接處應鍍錫。

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The following measures should be taken to reduce electrochemical corrosion:

· The grounding body should be galvanized steel, cast steel, copper or graphite electrodes;

· Reduce the DC working current of the joint grounding system;

· The protective grounding system should be free of DC or AC current;

· Incoming cables should use insulated outer sheathed cables or insulation measures between the sheath and the indoor grounding system;

· When connecting different metal wires, use welding as much as possible. When connecting with fasteners, the connection should be tinned.

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