Three Phase Electrical Wiring Circuits and Wiring Color Codes

Did you know that there were wiring color codes in Europe? I sure didn't. Most of Europe abides by IEC (International Electrotechnical Commission) wiring color codes for AC branch circuits. The US National Electrical Code solely mandates white (or grey) for the neutral power conductor and vacant copper, green, or with yellow stripe for the non neutral power. Canadian wiring is governed by the CEC (Canadian Electric Code - for your reference). The protective ground is green or green with yellow stripe. 3 section wiring and electrical circuit is also seen. This is so an electrician knows that the electrical wire running to a nonworking plug is blue, the electrician will instantly eliminate two/3 of the remaining wires. Color coding helps in organizing.