What does the color on the wire and cable mean?

Everyone knows that several wires in the cable have different colors. What are these colors? The following is the network editor of tongqiao Electric Co. , Ltd. To introduce to you what the color on the cable means. Color of cable skin provisions of cable conductor skin color National Standard: yellow, green, red. blue represents A respectively. B . C. N 1 1. 1 black when marking circuits according to wire color: internal wiring of devices and equipment. 1. 2 Brown: positive pole of DC circuit. 1. 3 Red: Three-phase circuit and Phase C; Collector of Semiconductor Triode; Cathode of semiconductor diode, rectifier diode or thyristor. 1. 4 Yellow: Phase A of three-phase circuit; The base of Semiconductor Triode; Control pole of SCR and bidirectional SCR. 1. 5 Green: Phase B of three-phase circuit. 1. 6 Blue: negative pole of DC circuit; Emitter of Semiconductor Triode; Anode of semiconductor diode, rectifier diode or thyristor. 1. 7 Light blue: zero line or neutral line of three-phase circuit; Grounding central line of DC circuit. 1. 8 White: main electrode of bidirectional thyristor; There is no semiconductor circuit with specified color. 1. 9 yellow and green two colors ( Each color is about 15 ~ 100 alternate patch); Grounding wire for safety. 1. 10 Red and Black parallel: AC circuit connected with double-core wires or twisted pairs. 2 when selecting the wire color according to the circuit 2. 1 Phase A of the AC three-phase circuit: yellow; Phase B: green; Phase C: red; Zero line or neutral line, light blue; Grounding wire for safety: yellow and green. 2. 2 AC circuit connected with double-core wires or twisted pairs: Red and Black parallel. 2. 3 positive pole of DC Circuit: Brown; Negative pole: blue; Grounding centerline: light blue. 2. 4 collector of Semiconductor Triode of semiconductor circuit: red; Base: yellow; Emitter: blue. Anode of semiconductor diode and rectifier diode: blue; Cathode: red. Anode of SCR: blue; Control pole: yellow; Cathode: red. Control pole of bidirectional thyristor: yellow; Main electrode: white. 2. 5 The internal wiring of the whole device and equipment is generally recommended: black; Semiconductor Circuit: white; In case of confusion: other colors outside the specified color are allowed (Such as orange, purple, gray, green blue, Rose Red, etc). 2. 6 when marking a specific color, if there are two or more colors that can be marked on a wire, depending on the specific situation of the circuit, color determination is carried out according to some meaning that needs to be expressed in the circuit.