There is a blue, gray, one side is the yellow side is green three lines, how to distinguish between the line of fire, zero line, ground? More
Do not believe the wire color, test with a test pen, remember the "safety first"! The The
If only two lines and is a single-phase power is so red and green if the three-phase four-line yellow-green red fire. Blue or black or two-color line connected to a simple point from the color to distinguish between bright and bright for the fire line bleak for the zero line
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Two should be phase line, generally in the three-phase loop corresponding to the color: A phase is yellow, B phase green, C phase red, neutral (that is, zero line) for the blue. If only in the single-phase loop only red and green when the default is red for the phase line, green for the zero line.
