English
简体中文
EnglishCorrect wiring of power strips and plugs:
Facing the power socket, it should be wired according to the correct connection method of left zero (N) right fire (L) and ground (E). Live wire - L (red, yellow, blue), neutral wire - N (blue or black), ground wire - E (yellow-green). In the low-voltage power grid, the three-phase four-wire system is used to transmit power, and there are three phase wires. (live wire) respectively represent A, B, C three-phase, a neutral wire N (neutral wire). In order to ensure the safety of electricity use, the three-phase five-wire system is used for power supply in the user area. 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. , and the other end is connected to the ground contact of each user, which plays the role of grounding protection.
The ground wire is a line that reliably connects the casing of the equipment or electrical appliances to the ground, and is a good solution to prevent electric shock accidents. Proper grounding improves the noise immunity of the entire system. Most of the power sockets we use are single-phase three-wire sockets or single-phase two-wire sockets.
The left pole of a single-phase 2-hole power socket is connected to the N wire (neutral wire), and the right pole is connected to the L wire (live wire). The left pole of the three-phase 4-hole socket is connected to the L3 wire (live wire 3), the right pole is connected to the L1 wire (live wire 1), the upper pole is connected to the E wire, and the lower pole is connected to the L2 wire (live wire 2).
All household appliances with metal shells use single-phase three-wire power plugs. The three plugs are arranged in a regular three-solution shape, among which the longest and thickest copper plug is the earth wire, and the earth wire has a special ground symbol.
The two below the ground wire are the live wire (the symbol letter is "L" Live Wire), the neutral wire (the symbol letter is "N" Neutral wire), and the order is left zero and right fire.
If the wire is not wired according to the wire color of the standard specification, the neutral wire and the ground wire are difficult to distinguish. If the power socket has a leakage protector, plug the power socket into the electrical appliance. If it trips, it means that the one connected to the neutral wire is actually the ground wire; if it does not trip, it is connected correctly.
