How is the color of the three wires?
Home distribution lines: three colors in any of the colors for the phase line L; in addition to the three colors other colors can be working ground N; yellow and green color line for the protection of ground line PE. DC line: red for the positive; black for the negative. The third line of color should be determined according to the use of their own Oh. By the way, your question, it is too difficult to understand, should first want to ask what the problem, and then clearly expressed.
Do not listen to upstairs nonsense, ask you how you use the carriage line?
Red is black and negative. Yellow or blue green are ground
So it is red is the line of fire is positive. Green is a zero line, that is, negative. The color is the ground wire.
