Is the blue line a live or zero line, and which of the blue and white lines is the live line and whi

The blue line is the zero line, and generally speaking, the fire line is represented by red, while the zero line is blue, which is a cool color and relatively not particularly dangerous. In addition to this, we can also use the electric pen andMultimeterto distinguish between the live line and the neutral line.

In general, three-phase circuits.

The medium line uses three colors, red, yellow, and blue, to represent the three live wires, and the zero line uses black. In single-phase lighting circuits, yellow is generally the live wire, blue is the neutral wire, and yellow and green is the ground wire. In some places, red is used for the live wire, black for the neutral line, and yellow and green for the ground wire.

Precautions: 1. Prevent electric shock and short circuit.

Second, pay attention to the switch to control the live line.

3. It is best not to connect the fuse on the zero line.

Fourth, the center of the lamp holder is connected to the fire wire.

5. Grounding wire.

Do not mix with the neutral line.

Sixth, the electrical appliances are cut off, so that the electrical appliances will not be electrocuted, and if the zero line is broken, the electrical appliances will be electrocuted.

The above content refers to Encyclopedia - Fireline.

For the installation of home lines, the specific zero line of the live wire depends on how you access the household line, which is generally distinguished by the red live wire, the blue zero wire, and the yellow-green ground wire.

The blue wire generally represents the neutral wire, but because there is no standard specification for what color wire must be connected to the neutral wire or live wire, it is necessary to use a voltage detector to check it in order to ensure accuracy. If the owner is not familiar with the circuit, he should seek help from the property in the community in time, and do not try to reconnect or repair it himself to avoid electric shock.

If it is a one-phase wire at home, one red and one blue, and a yellow-green wire with a ground wire, then the blue is the zero line, and the three-phase electricity in the factory may be the live wire or the neutral line. However, this is only a basic judgment, and it must be tested with electrical inspection equipment to confirm it.

The national standard working zero line is light blue, from which it can be concluded that the blue line is the zero line. If the circuit is not installed according to the standard, it may produce incorrect judgment, and the actual electrical inspection shall prevail.

When installing a normal circuit, the blue wire is the neutral wire, and the red wire is the live wire.

The normal line is the zero line, and you should prepare an electric pen at home, and you can know it by clicking on the wire.

The blue and white line, the red line is the fire line, and the blue line is the zero line. The live wire is a line in the lighting circuit with a voltage to the ground equal to 220V, which can be tested with a home voltage tester. Grounding is the most important job in the safety technology of electrical equipment and should be taken seriously.

The neutral line is mainly used in the working circuit, which is the line drawn from the neutral point on the secondary side of the transformer, also called the neutral wire, which means that the voltage of the line is zero.

What kind of wire does the color of the wire represent:1. Red, yellow, and green represent the live wire, and the voltage to the ground is 220V.

2. Blue, on behalf of the neutral line, that is, the zero line, is connected to the earth, the voltage to the ground is 0, and the position is horizontally arranged near the side of the house or vertically arranged at the bottom.

3. The yellow-green two-color line represents the neutral line of protection, that is, the ground line.

4. Phase A is yellow, phase B is green, and phase C is red, representing the busbar.

Firewire wire colors are usually red, green, and yellow; The color of the neutral wire is mostly black and blue; The ground wire is generally a yellow and green wire. Some electricians do not follow the standard wiring when wiring, and you can also distinguish between the live wire and the neutral wire through tools such as electric pens and universal meters.

Zero line of fire. Refers specifically to the power supply line of civil electricity, and the AC power supply voltage of the mains is 220 volts (V) (different countries, China is 220V). It consists of a neutral wire n and a live wire l.

In order to make alternating current.

There is a very convenient power conversion function, usually the power transmission is in three-phase four-wire.

way, three-phase electricity.

The three ends of the three heads are called phase wires, and the three tails of the three-phase electricity are connected together to call the neutral wire"Zero line"。The reason why it is called the zero line is that there is no current passing through the neutral line at the time of three-phase equilibrium, and then it is directly or indirectly connected to the earth, and the voltage difference between it and the earth is close to zero.

In the common single-phase cables, the brown is the live wire, the blue is the neutral wire, and the yellow and green two-color wire is the ground wire.

The commonly used color of single-phase electricity is red for the live wire, and blue and green are for the neutral line. Yellow is the ground wire. The color of three-phase electricity is red, green, and blue, and it is three live wires. Yellow is the ground wire. There are also individual differences.

In general, red, yellow, and green are the colors of the line of fire. Black and blue are the zero line colors.

Red is the line of fire, and blue is the line of zero.

There are many colors of wires, what color represents the live wire and the neutral wire? The electrician foundation is worth collecting.

The blue line is the zero line.

The logo of the line of fire is generally red, yellow, and green, and the abbreviation "L" indicates it. The zero line is usually marked with black, blue, and the abbreviation "n".

The live wire is the power line that carries electricity in the circuit.

In order to make the alternating current have a very convenient power conversion function, usually the power transmission is in the form of three-phase four-wire, the three ends of the three-phase electricity are called phase wires, and the three tails of the three-phase electricity are connected together and called neutral wires"Zero line"。The reason why it is called the neutral line is that there is no current passing through the neutral line at the time of three-phase equilibrium, and then it is directly or indirectly connected to the earth, and the voltage with the earth is close to zero.

In addition, the earth is a good conductor, and the ground wire is short-circuited to the earth through a deeply buried electrode. Even if there is no grounding in the three-wire outlet at home or work, it is best to use a three-wire power plug and a three-wire outlet.

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"。

The neutral line is the line drawn from the neutral point on the secondary side of the transformer, which forms a loop with the phase wire to supply power to the electrical equipment.

Traditionally, the blue line is the zero line and the brown line is the fire line. However, the actual situation can only be determined based on physical testing.

Hello dear, under normal circumstances, blue is the zero line, and red is the live line. In electrical engineering, a three-phase AC power supply is usually used, i.e., a three-phase power supply, in which case three wires are used to connect the power source and the load. These three wires are often referred to as phase wires, neutral wires, and ground wires.

A phase wire is a live wire, a neutral wire is a grounded wire, and a ground wire is a wire that is grounded to protect people and equipment from electric shock. Electrical standards may vary from country to country, but typically, the color of the phase wire is red, brown or black, the color of the neutral wire is blue or white, and the color of the ground wire is usually green or yellow-green. In some countries, the blue line is used as the neutral line, which is the neutral line, while in others, the blue line is used as the phase line, or the fire line.

Therefore, if you are unsure whether the blue wire is a live or neutral wire, it is best to consult your local electrical engineer or consult your local electrical standards.

The blue line is the zero line.

The logo of the line of fire is generally red, yellow, and green, and the abbreviation "L" indicates it. The zero line is usually marked with black, blue, and the abbreviation "n". The ground wire is distinguished by yellow and green colors, and the abbreviation "PE" is used to denote it.

In the three-pin socket, the left side is zero, the right side is fire, and the middle ground wire. The neutral wire is a neutral wire of AC power supply connected to the zero potential of the earth, and its full name is the protection neutral wire.

The neutral wire is a neutral wire of AC power supply connected to the zero potential of the earth, and its full name is the protection neutral wire. The most obvious way to distinguish is to look at the color, blue and black are the zero line, red, yellow and green are the fire line, and the yellow and green double Siheng mode color is the ground line.

Distinguish between neutral, live and ground wires

Install a leakage circuit breaker on the bus, and connect a bulb to the live wire and the neutral wire or the live wire and the ground wire, if the leakage circuit breaker action indicates that the stop is the ground wire, otherwise it is the neutral wire.

If you are at home, when you use an electric pen to measure, it will be all the live wire. Disconnect the neutral line at the main switch, only connect the live wire, turn on the lights at home at the position of on, and measure with an electric pen. It didn't light up just now, but now it's all the zero line, and the rest is the ground line.

Take a 220V bulb, use an electric pen to determine the live wire, and connect two wires and live wires to the lamp head. In terms of brightness, you can distinguish between the zero line and the ground wire, the bright one is the zero line, and the slightly darker one is the ground wire.

With a multimeter, place the multimeter in AC file 500V. Pinch one pen and touch the other pen to the power cord. There is a high voltage is the live wire, the low is the neutral wire, the voltage is 0 is the ground wire, and the resistance of the neutral line to the ground is less than 4 ohms for reliable grounding.