What Do The Different Colors Of Wires Mean?

In daily life, we will find that wires come in many colors. The colors of wires have their own clear meanings. Different colors of home decoration wires have different uses. Why do wires use different colors? The main reason is to correctly distinguish the phase wire, neutral wire and protective ground wire in the wire to prevent misoperation.
The common red, yellow, and blue lines represent the three-phase live wires of phase A, phase B, and phase C respectively. Red represents the live wire; blue represents the neutral wire; yellow and green represent the ground wire. Live wires are the power lines in an electrical circuit that carry electricity. The neutral line is a line drawn from the neutral point on the secondary side of the transformer. It forms a loop with the phase line to supply power to electrical equipment. Usually the neutral line is repeatedly grounded with a protective ground wire at the neutral point on the secondary side of the transformer to play a double protection role. A ground wire is a conductor in an electrical system or electronic device that is at zero potential from the earth, enclosure, or reference potential. Generally speaking, the ground wire is connected to the casing to prevent electric shock caused by damage to the insulation inside the casing.
The red color of the DC power cord represents the positive pole, and the black color represents the negative pole. If the circuit does not clearly stipulate what color wires must be used to connect the neutral wire, live wire, and ground wire, and when the neutral wire, live wire, and ground wire cannot be distinguished, it is recommended to use an electrical test pen for testing, and let the electrical test pen glow as the live wire, and the light bulb The glowing one is the neutral wire, and the rest are ground wires. It is recommended that when connecting wires, distinguish the color and purpose of the wires, and then connect the wires to the corresponding terminals.