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How to connect the three-plug power cord

source:Company News     Popular:adapter     release time:2021-05-27 10:10:59     Article author:sznbone    

  We know that the plug is a common electronic product. Basically, any electrical appliance cannot be separated from the plug. There are domestic and foreign plugs. The plugs also have male and female plugs. Of course, the plugs are also divided into two holes and three holes. So, how to connect the three-plug power cord, and what are the precautions for connecting the three-plug cord? The following editor will give a specific introduction.

How to connect the three-plug power cord(图1)

  How to connect the three-plug power cord?

  If the equipment uses a three-wire socket, it needs to be connected correctly, otherwise, the manufacturer may say that it is its own responsibility when the equipment is used to cause leakage or even an accident. The basic method is to look at the plug. There is an English letter next to each electrode. In the lower two, L means the live wire must be connected, N means the neutral wire; the upper one is the ground wire. Corresponding to the socket is enough. During home decoration, the three-wire socket on the wall needs to be connected according to this rule, otherwise there is no safety guarantee. If the device uses a two-wire plug, there is no such requirement.

  What are the precautions for connecting the three-plug power cord

  1. The three-phase four-wire system is used to transmit power in the low-voltage power grid. Among them, three phase wires (live wires) represent the three phases of A, B, and C, and one is the neutral wire N (zero wire). In order to ensure the safety of electricity use, the power supply in the user area is changed to a three-phase five-wire system. The fifth wire is the grounding protection wire PE (earth wire), one end of which is buried in the ground with a metal conductor near the user area , The other end is connected to the ground contact of each user, which plays a role of grounding protection.

  2. The ground wire is a line that reliably connects the casing of the equipment or electrical appliances to the earth, and is a good plan to prevent electric shock accidents. Correct grounding can improve the anti-interference ability of the entire system.

  3. Most of the power sockets we use are single-phase three-wire sockets or single-phase two-wire sockets.

  From the above introduction, we can see that the three-plug power cord is also a relatively common one in the application, and how to connect it in the end requires us to do some understanding. In order to ensure smooth and safe use, we also need to grasp the precautions for connecting the three-wire plug.


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