Without grounding protection, it is very dangerous to connect the grounding wire to the iron water pipe. On the one hand, because there are many water pipe joints, the sealing materials at the joints are insulated, and water pipes generally do not have good grounding devices, which will not protect them in case of water leakage.
In addition, the ground wire is connected to the water pipe. Once the water pipe leaks, it becomes a charged body, and all people who come into contact with the water pipe may get an electric shock, which has certain security risks. It is required that the grounding wire must be grounded.
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Extended data:
The function of grounding wire
1. Protection of personal safety: Because electrostatic discharge is easy to generate a large amount of charges, if the electrical equipment is improperly isolated, it will easily cause great harm to the electrical equipment itself and the human body, and the role of the grounding wire is just the conductor between the high-voltage equipment and the earth to avoid being damaged by charges.
2. Lightning protection: In the past, when encountering lightning and rainstorm, telephone poles and other equipment were often damaged by lightning, so the role of grounding wire can play a very good role in lightning protection and effectively extend the service life of electrical equipment.
3. Ensure normal operation: For some jobs that need electricity, such as medical work, the role of grounding wire is to avoid being affected in case of power failure, and it can still operate normally.
CCTV- The ground wire of the building is not grounded, but connected with fire hose. Every iron gate is electrified.
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