What are the precautions for the use of low-voltage plugs and sockets? Now let's take a look.

1. The position of low-voltage plug and socket shall be correct

The distance between the exposed low-voltage plug and socket and the ground shall not be less than 1.8m (all rural old houses are equipped with such sockets); The concealed socket shall be no less than 30cm from the ground. The panel of the concealed socket shall be close to the wall, with no gap around. The equipment shall be firm, lubricated, neat, free of cracks and scratches, and the decorative cap shall be complete; The children's playground should be equipped with a safety socket (socket with a safety patch), or its equipment height should not be less than 1,8 m. The sockets in the kitchen and toilet are 1.5m above the ground, and the sockets in the air conditioner are at least 2m above the ground. The socket height of equipment at the same location shall be consistent.

2. Do not connect low-voltage plugs and sockets at will.

Single phase two hole low-voltage plug and socket of the equipment, with the right hole or upper hole facing the socket connected to the phase line; Single phase three hole socket, the right hole facing the socket is connected to the phase line, and the left hole is connected to the neutral line; The center shall be connected to the maintenance earth wire (PE) above. PE lines shall not be connected in series between sockets, but shall be separately connected to the grounding wire. The zero line and maintenance ground wire of the three hole socket shall not be connected incorrectly.

3. The number of low-voltage plugs and sockets shall be sufficient.

As for the number of low-voltage plugs and sockets, the general requirement is that the spacing between two sockets should not exceed 3.66m, that is, a household appliance can not be connected from the left to the right, and the number of sockets in the bedroom, living room and kitchen should not be less than 4, 7 and 4 respectively.

4. The three hole grounding low-voltage plug and socket shall be reliably grounded

The grounding of the three hole socket is a thin ring connection for rural families to use electricity safely, and most families are not grounded at all. Even if the grounding is not standardized, for example, the grounding wire can be found at will, and the grounding body is fixed on the wall with nails, the two are connected together. Some users disconnect the connector plug of the three hole plug and replace the three hole socket with the two hole socket. When using household appliances with three pin plugs, users with three pin sockets do not need to maintain grounding. Once the metal shell of household appliances is powered on, people who touch household appliances will be in danger of electric shock. In order to ensure the safety of rural household appliances, farmers and rural electricity workers should pay enough attention to the maintenance and grounding of rural three hole sockets.

5. Sealed low-voltage plug and socket of equipment in damp places

The kitchen, bathroom and other domestic damp places should not be equipped with ordinary sockets to prevent corrosion or electric leakage.

6. The low-voltage plug and socket of high-power electrical appliances are directly connected from the household distribution box.

High power electrical appliances (air conditioners, microwave ovens, induction cookers, washing machines, refrigerators, etc.) There is a high working current, and the additional current of the socket used is not less than 10A. The connecting wire is led from the household distribution box, and the sectional area of aluminum wire is not less than 2.5 mm2; The cross-sectional area of the selected copper wire shall not be less than 1.5 mm2. For some electrical appliances that often move, you can use multi-purpose sockets, but be careful not to open multiple electrical appliances together. Ensure safe use.