As the code now requires a unique color for each phase and system, There are not enough standard colors for a location that has more than two different voltage 3 phase systems. One plant where I do work has 3 systems: 480, 240 and 208. This plant was built previous to this code requirement, but i am wondering about future locations. Many plants, where I have worked in the past had as many as 4 or 5 different voltage systems.
For 480 I would normally use brown, purple, yellow and gray, as orange is now dedicated to "high leg" marking. For 208 it is black, red, blue and white. In 230 systems, where there is only one other voltage on site, I use (tan- if available) pink and purple. If three systems exist there are not enough standard colors to go around. I understand that, for a price, you can get most anything but i would think that special ordering wire colors could get cost prohibitive and be very impractical.
For 480 I would normally use brown, purple, yellow and gray, as orange is now dedicated to "high leg" marking. For 208 it is black, red, blue and white. In 230 systems, where there is only one other voltage on site, I use (tan- if available) pink and purple. If three systems exist there are not enough standard colors to go around. I understand that, for a price, you can get most anything but i would think that special ordering wire colors could get cost prohibitive and be very impractical.
