How to divide the three hole plug into the zero wire and the ground wire

Generally speaking, the neutral wire is on the left, the live wire is on the right, and the ground wire in the middle. The voltage between the neutral line and the live wire is not the same, so you must pay attention to it when wiring, if there is a mistake in operation, then it will bring trouble to use, and it will also cause potential safety hazards.

Three-pin plug selection:

1. Consider the distance between two holes and three holes.

Now the sockets on the market are basically five-hole design, this kind of socket often needs to use a converter when using, if the plug is more special, then it can only be used as a plug. Therefore, when purchasing, pay attention to the distance between two holes and three holes, and the larger the hole spacing, the more convenient it is to use.

2. Consider the issue of security.

Safety is one of the most important factors when purchasing sockets, we must follow the provisions of the national standard when purchasing, and each socket is equipped with a safety door. When the socket is not in use, a piece of plastic is clamped before the air to prevent electric shock, and the safety door will only be opened when the socket is inserted inside.

3. Consider the component material of the socket.

When choosing a socket, you also need to pay attention to the material of its components, and copper sheet is one of the most important components. The flexibility and conductivity of the copper sheet are very good, and it is not easy to rust after a long period of use, and the humid environment will not have any effect on it.

Our general household three-hole socket, the vertical hole in the middle is the grounding wire, and the remaining two oblique holes are the fire wire and the zero wire, generally speaking, according to the traditional wiring habits, it is the left zero and the right fire, but this is not necessarily, even if the electrical appliances are reversed, they can work normally. Therefore, if you actually determine the neutral line and live wire, you generally use a voltage tester or voltmeter.

The standard plugs are left zero, right fire, and middle ground.

However, some people are not standardized when wiring, so in order to ensure that it can be measured, the voltage of the live wire to the neutral line and the ground wire is basically 220V, and the voltage of the neutral line to the ground wire is basically 0

It's very simple, connect the live wire to the L connector on the socket, and connect the neutral wire to the N connector.

The ground wire hole is not connected, only the live wire (L) and the neutral wire (N) can be connected. Just remember that if there is an electrical appliance that needs grounding protection, do not plug it into such an outlet.

Just connect the L and N terminals! The 2 terminals below the three-pin socket are L and N! One fire, one zero! The one on the head is the grounding wire! You don't have to pick it up!

The live wire is connected to L, the neutral wire is connected to N, and the ground wire is empty.

If there is no ground wire, the ground wire can be left unconnected.

The ground wire is empty, but it is not safe to have no ground wire.

The three-jaw plug marked with "L" is the live wire, and the "N" marked with "N" is the neutral line; If there is no identification of L and N on the plug, for the plug with standard wiring, the three claws facing it are left fire and right zero; If it is an outlet, it is a left-zero right-fire.

According to the specification, it is left zero and right fire on the ground, but many neutral live wires may be reversed.

If it is a single-phase electricity, it is a left-zero right-side fire, the middle is grounded, and the plugs of three-phase electricity are fire.

Mark L is the live line, and Mark N is the zero line. The other is to use a multimeter to measure the zero line of the fire line.

n is the neutral line and l is the live line. The electrically specified phase sequence is left zero and right fire grounding (when there are three holes).

Most of the power outlets we use are single-phase three-wire sockets or single-phase two-wire sockets. In the single-phase three-wire socket, the middle is the grounding wire, which is also used for positioning, and the other two ends are connected to the fire wire and the zero wire respectively, and the wiring sequence is the left zero and the right fire, that is, the left side is the zero line, and the right side is the live wire.

The three plugs are arranged in a regular three shape, and the longest and thickest copper plug on the top is the ground wire. The two below the ground wire are the fire wire (the symbol letter is"l"live wire) (the letter of the logo is"n"naught wire), the order is left zero and right fire, (when the back of the plug is facing itself).

The ground wire is short-circuited to the earth through a deeply buried electrode.

The transmission of mains power is in a three-phase way, and there is a neutral wire, and the current of the neutral wire is zero when the three-phase is balanced, commonly known as it"Zero line"Another feature of the neutral wire is that it is short-circuited with the ground wire in the total distribution input of the system, and the voltage difference is close to zero. The three phase wires and the neutral line of three-phase electricity have a voltage of 220, which will produce electric shock to people, commonly known as it"Fireline"