What are the incorrect grounding methods - Solutions - Huaqiang Electronic Network

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(1) Some users only connect the neutral line to the left side of a three-pin socket and leave the right side (phase line) connected, while the grounding pin remains unused. Others even reverse the phase and neutral lines in the socket. Although this might not cause issues when the equipment is functioning normally, it removes the safety protection function. If there's a leakage, an electric shock could occur.

(2) Connecting the socket’s ground terminal directly to the neutral line is dangerous. In practice, the working neutral line is used as the protective ground, but if the wiring includes fuses or switches on the neutral line, a disconnection could be extremely hazardous. Therefore, the protective ground wire should never be shared with the neutral wire.

(3) Some users use wires or metal bars to create a makeshift ground connection, connecting them to the metal casing of appliances like refrigerators or washing machines without checking the grounding resistance. This is not compliant with safety standards and can be risky.

(4) Residents in high-rise buildings sometimes use water pipes or gas pipes as grounding bodies, which is very unsafe. The surface of these pipes is often coated with anti-corrosion paint, and joints are sealed with plastic tape. Underground water pipes may be made of PVC, which is not conductive. Using gas pipes as grounding points can lead to severe consequences if an accident occurs.

To ensure personal safety and proper operation of electrical devices, the power supply department must maintain a stable and high-quality distribution network and install reliable, fast, and sensitive protection devices. Construction teams should be technically skilled, manufacturers need to provide quality products and support, and users must understand safe electricity usage and take responsibility for their own safety. Only through collaboration among all parties can electrical equipment be used safely and effectively in daily life.

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