We all know that there are different colors on several lines inside the cable, what are these colors for? The following is a network of Copperbridge Electric Co., Ltd. editorial to introduce you to the cable above the color is on behalf of what it means.

Cable skin color cable wire outer skin color regulations

National standard: yellow, green, red. Blue on behalf of the A. B. C. N, respectively

1 according to the wire color marking circuit

1.1 Black: internal wiring of devices and equipment.

1.2 Brown: the positive pole of the DC circuit.

1.3 Red: three-phase circuits and C-phase;

Collector of a semiconductor triode;

Cathodes of semiconductor diodes, rectifier diodes or thyristors.

1.4 Yellow: three-phase circuit and phase A;

Base of the semiconductor triode;

The control pole of the thyristor and bi-directional thyristor.

1.5 Green: phase B of a three-phase circuit.

1.6 Blue: negative pole of the DC circuit;

Emitter of a semiconductor triode;

Anode of semiconductor diode, rectifier diode or thyristor.

1.7 Light blue: the zero or neutral wire of a three-phase circuit;

DC circuit of the grounding of the center line.

1.8 White: main electrode of bi-directional thyristor;

Semiconductor circuits with no specified color.

1.9 Yellow and green two-color (each color width of about 15 ~ 100 mm alternately attached); safety grounding wire.

1.10 Red and black parallel: AC circuits connected with a two-core wire or two stranded wires.

2. When selecting wire colors for circuits

2.1 AC three-phase circuits

Phase A: yellow;

Phase B: green;

Phase C: red;

Zero or neutral wire, light blue;

Ground wire for safety: two-color yellow and green.