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Many families are used to connecting multiple appliances to the same multi-purpose socket and often turn on multiple appliances at the same time. This will easily lead to socket fatigue, resulting in too large instantaneous current. It will make the wire overheat due to overload, and even cause a fire in serious cases.
The common multi-purpose power sockets are mostly rectangular four or five-purpose sockets. The internal structure of this type of socket is made of two universal conductive copper contacts, with springs on both sides of the copper contacts. When the socket is inserted into a single plug, it can normally be used. If more than two plugs are inserted, poor contact and mutual interference will occur.
If the TV, stereo, and other plugs are plugged into the socket at the same time, the TV will "creak". The fluorescent screen will be on and off. The stereo will make a strong "boom" sound, making electrical appliances unusable.
In addition, when the multi-purpose socket is used with a large load (such as an electric stove, iron, oven, etc.), it will generate heat due to poor contact between the plug and the socket, which is easy to burn the plug and socket and cause a fire.
Therefore, when using multi-purpose power sockets, do not plug in too many plugs. Especially when using round core and flat core plugs together, generally do not exceed two plugs. Do not plug them in adjacent to each other. If there are many high-end appliances in your home, you'd better use a special power socket or other sockets with good quality to avoid affecting the use effect and damaging the appliances.