Power Cable/Wire Color Codes
Wiring Color Codes
International Electrotechnical Commission - IEC |
Function | Code | Wiring Color |
Protective Earth | PE | green-yellow | | |
Neutral | N | blue | | |
Line, single phase | L | brown | | |
Line, 3-phase | L1 | brown | | |
Line, 3-phase | L2 | black | | |
Line, 3-phase | L3 | grey | | |
US National Electrical Code |
Function | Code | Wiring Color |
Protective Earth | PE | bare copper, green-yellow, green | | |
Neutral | N | white | | |
Line, single phase | L | black or red | | |
Line, 3-phase | L1 | black | | |
Line, 3-phase | L2 | red | | |
Line, 3-phase | L3 | blue | | |
US color code for 208 VAC three-phase: black, red and blue
480 VAC: brown, orange and yellow
In the US conductors larger than #6 AWG are only available in black. They must be color coded at the ends by taping.
Canadian Electric Code |
Function | Code | Wiring Color |
Protective Earth | PE | green-yellow or green | | |
Neutral | N | white | | |
Line, single phase | L | black or red | | |
Line, 3-phase | L1 | red | | |
Line, 3-phase | L2 | black | | |
Line, 3-phase | L3 | blue | | |