Which of these two colored lines is the live line and which is the zero line?

The red one is the live wire, (usually the switch controls the live wire), the blue one is the neutral wire, and the yellow one is the ground wire.

The live line is generally a red line, and the blue line is a neutral line.

Under normal circumstances, the wire in the household plug is the red wire, the blue is the zero wire, and the two-color wire is the ground wire.

The blue wire is the neutral wire, the red wire is the live wire, and the yellow and green wire is the ground wire.

In the electrical standard, red is usually used to represent the live wire, light blue to represent the neutral line, and yellow and green to represent the ground wire. Generally speaking, facing the socket bar, the left is the neutral line, the right is the live wire, and the middle is the ground wire. However, red does not necessarily mean that the line of fire is the line of fire, and it is best to use an electric pen to measure it to ensure safety.

National electrical standard, usually red represents the live wire, blue represents the neutral line, and the yellow-green wire represents the ground wire. For sockets, there is zero left and right fire. For the switch, the live wire enters the switch, and the neutral line directly enters the lamp. Duren Intelligent Automation is at your service.

Don't rely on your eyes to judge what you don't know, and if you don't have a drawing, measure it with a multimeter or electric pen. Some masters of furniture decoration mix colors.

Generally, there are two wires in the lighting circuit, one is called the live wire and the other is called the neutral wire. The difference between the live wire and the neutral wire is that they have different voltages to the ground. The line that is generally represented in red is the line of fire.

The line that disappears in blue is the zero line. The common yellow and green lines are represented as ground wires.

L represents the live wire, N represents the neutral wire is also called the neutral wire, usually the red, yellow, green three colors of the wire, the neutral wire uses the blue wire, to the socket, the right jack is the live wire, the left jack is the neutral wire.

Usually the standard of wiring is yellow, green and red is the ABC three-phase live wire, the black or blue wire is the neutral line, and the yellow and green two-color wire is the grounding wire.

So, according to what you said the red line should be the live wire, and the black line is the zero line (unless the person wiring the wire is not operating according to the regulations). To be on the safe side, it is recommended that you measure it with a voltage tester in case of accidents.

Generally speaking, red is the live wire, blue is the zero line, and black is the ground wire, so that black should be the zero line--

Red is the live wire, black is the neutral wire, and the PE protective grounding wire should be yellow and green wire.

I think there is no clear rule on this issue, generally red is the line of fire, but it is not absolute, so it is better to test it with a test pen, please refer to it.

As a general rule, black is the zero line, but special cases are a different matter.

Brown represents the L, L(live) line, which is the line of fire.

Blue represents the cautious search n, (neutral) line, and the code is the zero line.

A power cord is a wire that transmits an electric current. Usually the way the current is transmitted is point-to-point.

According to the use, the power cord can be divided into AC pure filial piety power cord and DC DC power cord, usually AC power cord is a wire with alternating current with higher voltage, and this kind of wire needs to obtain safety certification according to a unified standard due to the high voltage before it can be formally produced.

The DC line is basically a direct current with a lower voltage, so the safety requirements are not as strict as the AC line, but for the sake of safety, countries still require unified safety certification.

The red line is the line of fire.

In power cables, yellow, green, and red represent phase A, phase B, and phase C, respectively. Blue represents the neutral line, yellow and green represent the ground wire, and the red line belongs to the live wire. The line is marked with the letter "L".

The state fire wire is used as a power line to transport current in the whole circuit, which is electrified, and before wiring, it is necessary to ensure that the power supply is cut off to prevent the risk of electric shock.

In addition, in addition to the live wire, the most important wire is the neutral wire, which is a trunk wire that is connected from the center point of the transformer to the ground wire. In the circuit, it mainly relies on the circuit formed by the connection of the neutral wire and the live wire, and supplies power to the electrical facilities. The neon tube glows when tested with an electric pen for the live wire, while the neutral line does not.

Wiring precautions

The live wire must be wired correctly and cannot be connected incorrectly, otherwise it will lead to serious consequences such as the failure of electrical equipment to work normally, and even disasters. The live wire wiring must be firm and reliable, and the terminal blocks should be tightened and not loosened. The firewire wiring must meet the rated voltage and rated current requirements of the electrical equipment, and cannot exceed the rated value.

The connection on the neutral line and the phase line should be reliable, in line with the national norms, the contact resistance of the connecting part should not be greater than the resistance of the same length of the same material wire, avoid the direct connection of different material wires, and prohibit the direct docking of the aluminum sail beating line. The neutral point should be guaranteed to be reliably drawn, that is, the internal neutral lead wire on the secondary side of the power transformer shall not be broken.