Color Code Line Neutral
The international electrotechnical commission and countries that abide by it such as the united kingdom use blue for the wiring color code for neutral wire of ac branch circuit.
Color code line neutral. The colors adopted as local practice are shown in table below. The green with yellow wire which is the earth wire provide a path back to the source when there is an electrical fault to prevent the possibility of electrocuting a person. Color is usually the best way to identify electrical wiring. Brown orange and.
In case of a three phase power supply the combination of red yellow and blue are used for the active line power conductors black color for neutral conductor and green or green yellow for protective ground. The blue wire is the neutral wire which carries the electricity back to the source. Black red and blue are used for 208 vac three phase. All wiring looks the same on the inside but the outside coverings come in different colors.
National electric code and canadian electric code mandates only white or grey color be used for neutral wires. Mixing up neutral and live wire can lead to serious consequences. Us ac the us national electrical code only mandates white or grey for the neutral power conductor and bare copper green or green with yellow stripe for the protective ground in principle any other colors except these may be used for the power conductors. They are the same i e.
For wow reaction check the common neutral and 3rd phase colors. As the name suggests japan always does weird things. The single phase supply is 100v line to neutral and three phase supply is 200v 3 lines no neutral.