How much do you know about the meaning of wire colors

How much do you know about the meaning of wire colors

The red light stops, the green light goes, the yellow light is on, and so on. The signal lights of different colors represent different meanings. This is a common sense that children in kindergarten know. In the power industry, wires of different colors also represent different meanings. The following focuses on explaining which circuits different colors represent.

Black: Internal wiring of devices and equipment.

Brown: Solicitation of DC circuits.

Red: Three-phase circuit and C-phase, collector of semiconductor triode; cathode of semiconductor diode, rectifier diode or thyristor.

Yellow: Phase A of a three-phase circuit; base stage of semiconductor triode; control pole of thyristor and triac.

Green: Phase B of a three-phase circuit.

Blue: negative electrode of DC circuit; emitter of semiconductor triode; anode of semiconductor diode, rectifier diode or thyristor.

Light blue: the neutral or neutral wire of a three-phase circuit; the grounded neutral wire of a DC circuit.

White: The main electrode of the triac; a semiconductor circuit without a specified color.

Yellow and green two colors (the width of each color is about 15-100mm alternately pasted): grounding wire for safety.

Red and black in parallel: AC circuits connected by twin-core conductors or twisted-pair wires.


Post time: Nov-03-2022

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