What does the socket wire color mean? Socket wiring method introduction

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Maybe many of my friends will feel distressed because there are too many wires in the house to distinguish them. At this time, instead of choosing some suitable tool accessories to classify them, it is better to pay attention to the choice of socket wire color before purchasing , because the color is visual. The stimuli are relatively strong. If we can choose the contrasting color when purchasing different socket wires, then it will be very convenient. The later operation is not easy to be confused. Interested friends can combine the following. Learn.

First, what color does the wire color represent?

Generally, the color of three-phase wires is yellow, green, and red, which are A, B, and C three-phase, blue is zero, yellow-green is the grounding wire, yellow, green, and red are connected to the fire wire, blue Connect the neutral line, the yellow-green line is connected to the PE protection line or to the device housing (the housing is connected to the ground network). Sometimes when the four-line color difference is not obvious, the three sections are the same as the fire line, and the section is slightly smaller than the zero line. If the transformer is the power supply of the control loop, if it is 380V, it will be connected to any two hot wires; if it is 220V, it will be connected to a live wire and a neutral wire.

In actual operation, the safety is red on the fire line, blue is the zero line, and yellow or yellow and white are the ground lines. The phase line is generally yellow, green, and red. The protective neutral line (PEN line) is black, and the protection line (PE line) is a yellow-green two-color line. The protection line is strictly prohibited for phase line use under any circumstances.

According to the “Code for Construction of Residential Decoration Engineering” GB 50327-2001 16.1.4:

“When wiring, the color of the phase line and the neutral line should be different; the color of the same residential phase line (L) should be uniform, the zero line (N) should be blue, and the protection line (PE) must use yellow and green double color line”

According to the specification, it can be concluded that the protection line (PE), that is, the ground line, must be (mandatory) yellow-green two-color line, and the zero line is blue. (Not mandatory, when the conditions permit, the blue line should be selected. ), the phase line is red, yellow, and green without using blue. (The color of the phase line is not consistent, different companies may specify different. The following color can be used for reference. The zero line is evenly colored blue. If it is used for the socket, the phase line is red. The lamp line is red, the lamp is controlled. Line or dual control lines are available in yellow and green).

Wire color

Wiring the socket according to the specified color: red, blue, and double-color lines are threaded into the socket bottom box. Red is the fire line, blue is the zero line, and the double color line is the ground line. It is convenient to thread according to the specified color. The red wire is connected to the L pole of the socket, the blue neutral wire is connected with the N pole, and the double color wire is connected with the grounding mark.

According to the specified color lamp route: the incoming line is red, the zero line is blue, and the control line is yellow (green can also be used).

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