Three-phase five-wire cable color: A line yellow, B line blue, C line red, N line blue, PE line yellow green or black.
The three-phase five-wire system includes three phase lines (A, B, and C lines), a neutral line (N line), and a ground line (PE line) of three-phase power. The ground wire is connected to the neutral line on the power supply transformer side, but it cannot be used as a neutral line after entering the user side. Otherwise, it will be no different from the three-phase four-wire system after the chaos occurs.
According to the national regulations, the voltage between the phase lines of the civil power supply line (ie, the line voltage) is 380V, and the voltage between the phase line and the ground line or the neutral line (ie, the phase voltage) is 220V. The entry line generally adopts a single-phase three-wire system, that is, one of the three phase lines and the neutral line (for the zero line) and the ground line.
The national standard three-phase five-wire standard wire color is: A line yellow, B line green, C line red, N line blue, PE line yellow green two colors.
GB5023 (Cable Specification) for the identification of the color of the insulation layer:
The color of the three-phase power cable is yellow + green + red + blue + yellow and green.
General manufacturers comply with national regulations, the three-core five-core cable standard wire color: A line yellow, B line green, C line red, N line blue, PE line yellow green two-color.