Power supply equipment bus logoAddtime：2015/3/27 

in the power supply system, three-phase power supply phase sequence identification. We separately put the three-phase power supply in the arrangement, as above, in the middle, next or left, right and right in the English letters A, C, B to be identified, zero line N, ground with PE logo. < in the color of the logo, according to the regulations, power supply arrangement of a, B and C three-phase alternating current corresponding to the colors are yellow, green and red, neutral color with light blue, grounding to yellow / Green two-color logo.

so, can the corresponding A, B, C, N, PE letters in the logo on the bus.