From July 1, 2009, new color-coded wires must be used for new fixed electrical installations.
What do the three colors of the wire represent?
The blue line represents the zero line, the green and red lines usually represent the u, v, and w phases of the three-phase line, that is, the live line, and the yellow-green two-color line represents the protective grounding line.
Yellow: Phase L1 in a three-phase circuit, ie Phase A
Green: L2 phase in a three-phase circuit, which is phase B
Red: Phase L3 in a three-phase circuit, i.e. Phase C
Blue: working neutral line N
Yellow-green: protection neutral line PE
