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As we all know, the power cord plug is inseparable from the power socket. The socket installation must be firmly connected, the wiring must be correct, and the capacity of the socket must be consistent with the capacity of the electrical equipment. The socket is an important electrical device in the circuit, and its quality is directly related to the safe use of electricity. The safety requirements for socket installation are as follows:

1. Different voltages must have obvious signs

Sockets with AC, DC or different voltages should be in different forms and have obvious signs. The plugs and sockets cannot be inserted into each other.

2. Socket type

Single-phase power supplies generally use single-phase five-hole sockets, that is, single-phase three-hole sockets and single-phase two-hole sockets are on one socket board for simultaneous use of single-phase two-pole plugs and single-phase three-pole plugs. The three-phase power supply should use a three-phase four-hole socket.

3. Socket installation height

The installation height of the concealed socket is generally not less than 0.3 meters above the ground. Surface-mounted socket should be installed

Mounted on round or square timber that meets specifications. The concealed socket should have a special box (cassette), and the cover should be straight and close to the wall.

4. Socket capacity

The rated capacity of the socket should be compatible with the electrical load.

5. Socket wiring

The left hole of the single-phase two-hole socket is connected to the working zero wire, and the right hole is connected to the live wire (commonly known as the left zero and the right fire);

When wiring a single-phase three-hole socket, the left hole of the facing socket is connected to the working neutral wire, and the right hole is connected to the live wire. The upper hole of Royal Oak Offshore Rubens Barrichello Replica is connected to the protective neutral or ground wire. It is strictly forbidden to connect the upper hole to the left hole with a wire ; When wiring a three-phase four-hole socket, the left hole of the facing socket is connected to the phase A live wire, the lower hole is connected to the phase B live wire, the right hole is connected to the phase C live wire, and the upper hole is connected to the protective neutral or ground wire.

6. Socket with switch

For household appliances (such as washing machines) that have a risk of electric shock when plugging in the power supply, a socket with a switch that can automatically disconnect the power supply should be used.

Article from: http://www.elejintao.com/newsd-nid-12.html