The three wires in the home are all the same color, how to distinguish the neutral wire from the gro

Start by measuring with an electric pen.

The one that shines is the line of fire.

Distinguish between the neutral ground wire:

The specific method is: after the power on, first of all, the multimeter is zeroed, after the zero adjustment is completed, you can measure, use the black pen to insert the jack of the live wire, and then use the red pen to insert the other two jacks, we look at the value measured by the multimeter, if the value measured twice is about 220, then the high value is the zero line, and the low value is the ground wire.

Extended Materials. Precautions for hydropower installation:

1. When designing the waterway, you should first think about all the equipment related to water, such as water heaters, water purifiers, washing machines, toilets and wash basins, etc., and think about the installation location, method and whether you need hot water.

2. In addition to the water outlets such as wash basins, cloth pools, and clothes machines, it is best to install a faucet in the bathroom to facilitate the connection of water and flushing the ground in the future.

3. It is best to have the property present when conducting the suppression test, so as to play a supervisory role and avoid some decoration teams from deceiving the owners. The method of pressure is to open the "return valve" of the pressure pump to form a circuit to see if there is pressure in the tube, especially for the electric pressure pump, we should pay more attention.

4. After the waterway is installed, it is necessary to pay attention to check whether the waterway in each place is kept unblocked, such as: whether each drain outlet of the faucet such as kitchen, bathroom, balcony is unobstructed. If you find that the drainage is slow or poor, you should get the property unblocked in time.

Sogou Encyclopedia - Ground Line.

There are two steps to distinguish:

1. Three wires of the same color are separated and energized. Use a test pen to separate two or three wires, and the one that lights up is the live wire;

2. For low-power lighting (such as 25W table lamp), connect the live wire to either end of the two-phase plug in the state of power failure, and connect the other end to one of the two wires that need to be measured. On power, if it trips, that is the wire that needs to be measured for the plug is the protective grounding wire. If it does not trip, then the wire that needs to be measured for the plug is neutral.

Finally, three wires are connected to single-phase three-pin sockets: the live wire is connected to the hole on the right, the left is connected to the neutral wire, and the upper side is connected to the protective grounding wire.

On the plug, the top one is the ground wire, which is the top one of the triangle. The distinction between the live wire and the neutral wire is related to the wiring of the socket, according to the standard of the electrician, remove the top point, and the remaining two points. On the left is the zero line, and on the right is the live line.

1. There are three colors of red, yellow and blue, the zero line is black, and the yellow and green are ground wires. In the general household single-phase lighting circuit, the live wire is red, the neutral line is green or blue, the letter symbol of the live wire is "L" and the zero line is "N".

2. The reason why there are neutral wires, ground wires and live wires in the wires is to ensure the safety of the circuit, and the neutral wire is connected to the ground again at the front end of the user, which is called repeated grounding, and then the zero wire and the ground wire are separated from the connection.

3. The neutral wire and the live wire constitute a power supply, connect the grounding wire to the normal non-charged conductive part of the electrical appliance (such as a metal shell), when the electrical leakage occurs, the leakage current is directed to the earth through the grounding wire or the leakage protection device is tripped and de-energized, so as to avoid the leakage current from flowing to the ground through the people and animals who contact the conductive part, causing electric shock, electric injury, and causing accidents.

The regulation is to use a yellow-green wire as a grounding wire.

Yellow and green wires are commonly used as grounding wires.

1. Find the live wire first: the AC voltage file (or electric pen) of the multimeter, the measured voltage to the ground is 220 volts, and the other two are one zero and one ground.

2. Distinguish between the zero line and the ground wire: turn on the light, turn off the main switch, disconnect the output zero line of the main switch, and then close the light and turn on the light to measure the remaining two wires, the zero line has 220 volt electricity, and the ground wire is still not charged.

The color of these three wires is the same, and it is not easy to distinguish between the neutral wire and the grounding wire. It needs to be determined with a wire checker, which only a professional electrician has; Therefore, it is recommended to hire a professional electrician to handle it for you as well.

If there is a leakage protection switch at home, first confirm the live wire, and then connect a lamp, one end is connected to the live wire, and the other end is the other two wires, and the trip is the ground wire.

The three wires at home are all the same color, and you can measure them with an electric pen or a universal meter.

The grounding wire is generally double yellow and black.

When the grounding wire is dangerous, the high voltage is transferred directly to the earth. The grounding wire in the electrical appliance is the line that is connected to the shell of electrical equipment and other parts to export the unsafe charge or leakage current generated due to various reasons in time.

Usually the power transmission is in the form of three phases and four wires, the three ends of the three-phase electricity are called phase wires, and the three tails of the three-phase electricity are connected together to call the neutral wire and also called the neutral line. The power cord is from the national logo, and the general phase wire - phase A yellow, phase B green, phase C red.

The ground wire is yellow and green. If it is a three-phase socket, the left is the neutral wire, the middle is the ground wire, and the right is the live wire. Generally, the live wire is yellow, green, red, white, gray, and brown from use, the neutral wire is light blue and blue, and the ground wire is double yellow and black.

The national standard stipulates that it is a yellow-green two-color line. GB T6995-2008 wire and cable identification mark method stipulates: 1

For household 220V mains, the live wire is generally red or brown, because these two colors are hot colors. The neutral line is blue or green, black. The grounding wire is a two-color yellow and green wire.

According to the regulations, the yellow and green wires are protective grounding wires.

The standard wiring color should be yellow and green.

Generally speaking, if the wire has three strands, the grounding wire is a flower wire, that is, there are both yellow and green.

The live wire is generally red, the neutral wire is generally blue, and relatively speaking, the ground wire is relatively thin and relatively easy to identify.

Summary. According to the color, the premise is that the wires are all wired in accordance with the standard requirements, and there are a total of 5 wires for residential electricity.

The fire wire is any yellow, green, or red, the zero wire is light blue, and the ground wire is yellow-green.

Home decoration, there are three wires on the wall, know that one is a live wire, how to distinguish the zero line and the ground wire. The three lines are red, blue, green, urgent!

According to the color, the premise is that the wires are all wired in accordance with the standard requirements, and there are a total of 5 wires for residents to argue. 2 5 The fire line is any one of yellow, green, and red, the zero line is light blue, and the ground line is yellow and green.

3 5 use an electric pen to distinguish the live wire and the neutral wire, use the electric detector to stare at the core of the three wires respectively, the indicator light is the live wire, and the indicator light is not the neutral line or ground wire. 4 5 Use a light bulb to distinguish the neutral line from the live wire, prepare a test bulb, and use two of the three wires to connect the bulb respectively. 5 5 The normal bright call of the bulb is the live wire and the neutral line, the bulb is slightly bright is the live wire and the ground wire, and the bulb is not lit at all is the neutral line and the ground wire.

Summary. Hello, glad to answer for you. Dear, the general yellow and green color of the wire is the grounding wire.

Hello, glad to answer for you. Dear, the general yellow and green color of the wire is the grounding wire.

It is generally yellow and green in color. According to China's standards, the circuit construction is that phase A of the live wire is generally connected with yellow wires, phase B of the live wire is generally connected with green wires, phase C of the live wire is generally connected with red wires, the zero wire is connected with blue wires, and the ground wire is generally connected with yellow and green wires. In addition, it should be noted that the installation of wires also needs to follow the principle of losing the left game and the right fire to the ground to avoid reversing the connection.