There are four binding posts on the 380v socket, how to connect the zero wire

N is connected to the zero line, ABC three-phase, and the live wire needs to be connected to three.

The neutral point of the 380 volt civil power supply should not be grounded at the entrance end (grounding at the transformer end, this grounding is to take into account that the point above the power supply voltage can not be caused by the suspension point, and the grounding of the user end and the grounding of the transformer end have a certain resistance in the ground), and the power supply mode is a phase wire and a neutral wire to form a loop, and there is also a grounding wire in the single-phase three-core power jack.

If it is marked, n is connected to the zero line.

V power supply, also known as power supply, is A, B, C, N, called three-phase four-wire system, access to three-phase motors, three-phase air conditioning and other industrial electrical equipment. In order to ensure the safety of electricity, a protective grounding wire has also been added. Ensure that the electrical appliances can connect dangerous voltages to the ground when they leak electricity and protect the safety of personnel.

2. The household power supply is two wires, L (live wire) and N (neutral line), and the load (electric light, TV) between the live wire and the neutral line can work. In order to ensure the safety of electricity, a protective grounding wire has also been added. Hence there are two-pin sockets and three-pin sockets.

The protective grounding wire should be a special line connected to the ground, (the grounding resistance should be as small as possible) to ensure that the dangerous voltage can be connected to the ground when the electrical leakage is carried out, so as to protect the safety of personnel.

Such a socket is not set with a neutral line of the binding post, need to be connected separately, the top hole is the post of the grounding wire, you can use a live wire and a neutral wire alone to make a single-phase socket.

Refer the binding post with PE or N to the neutral line.

The thickest one at the top is the zero line, and the rest is the live line.

The one with the longest 380V plug is connected to the ground wire instead of the neutral wire!

See the image below:

Schematic diagram of plug wiring.

Remember! The longest leg is connected to the ground non-zero wire!

Schematic diagram of socket wiring.

The place where the circle is drawn on the socket is the place where the ground wire is placed! Don't make a mistake!

When choosing a socket, be sure to choose the corresponding level of socket according to the power of the electrical equipment used.

The 380V socket is used for three symmetrical loads, and there is no separate working neutral wire, so that pin is said to be the ground wire.

38o of electricity is not available for interpolation. Only low-voltage electricity can be used socket, the socket is left zero right fire is the grounding wire.

On the 380-volt socket panel, the upper pin is grounded.

The connection is the ground wire, you can disassemble one by yourself to see, L is the live wire, N is the lead, PE is the ground wire. are marked on the sockets.

The correct connection of the four wires of the 380V caliper head is as follows:

1. When the three-phase four-wire is wiring, it must be wired according to the correct wiring sequence, if the wiring sequence is incorrect, it will lead to the reversal of the load of the three-phase four-wire. The standard wiring sequence of three phases and four wires is: phase A, phase B, phase C, that is:

Yellow line, green line, red line.

2. Because the power supply bureau may be reversed, so after the three-phase four-wire is connected, you must try to see if the motor is destroyed and there will be a reversal phenomenon, if there is a reversal, then the socket should be disassembled, and then the wiring sequence of any two live wires inside can be replaced.

Wiring Notes:

1. When connecting wires, be sure to handle the wiring method correctly, and don't expose the joints, because the resistance of the joints is very large, and the wires often have the phenomenon of heating. When connecting the wire, it is best not to touch the joint, and to wrap it with insulating tape, so that there will be no accidents.

2. Then, when installing the wire, you must plan the installation method, because the wire can be installed openly and concealed. Surface-mounted is to lay the overall wiring on the top surface of the ceiling and wall. <>

N is connected to the zero line, ABC three-phase, and the live wire needs to be connected to three.

The neutral point of the 380 volt civil power supply should not be grounded at the entrance end (grounding at the transformer end, this grounding is to take into account that the point above the power supply voltage can not be caused by the suspension point, and the grounding of the user end and the grounding of the transformer end have a certain resistance in the ground), and the power supply mode is a phase wire and a neutral wire to form a loop, and there is also a grounding wire in the single-phase three-core power jack.

The live wire is connected to the neutral line, and it is not allowed to replace the neutral line with the ground wire.

When 380 volts become 220 volts, the correct wiring method is to connect the live wire with the zero line, and it is not allowed to carry the ground wire instead of the zero line, because: if the same regional power grid exists at the same time: some users use the ground wire as a protective line, and some users use the zero line instead of the ground wire, an electric shock accident will occur.

Connecting the line with a wire refers to the act of manually connecting the wire to the called line in the early days of the invention. In 1965, the first computer-controlled program-controlled switch was launched in the United States, which fundamentally changed the wiring method and marked the beginning of a new era.

The circuit that uses a three-phase generator as a power source is called a three-phase power supply, and the circuit that is powered by a three-phase power supply is called a three-phase circuit, and the phase voltage between the phase and the neutral wire is called the phase voltage, and the voltage is 220V.