Integrated wiring, each layer must be equipped with electronic patch panels, even though the information points rarely?
Zero with blue or green Black Ground wire with yellow and green The most commonly used is the phase line red, zero line blue, ground yellow green DC point red that positive, black is negative
"Red price" is the reference price of the reference price, is recognized as the reference price, usually floating up and down in it
Blue and gray is the line of fire and the zero line, which is connected with the plug on the L line for the line of fire, and N connected to the zero line, yellow and green color line for the protection of ground
