What color is the ground wire

The main colors of ground wires are green, yellow and blue.

Ground wire is a two-color yellow and green wire with the outer skin of the ground wire is in the electrical system or electronic equipment, connected to the earth, connected to the shell or connected to the reference potential of zero wire. General electrical appliances, ground wire connected to the shell to prevent electrical appliances due to internal insulation damage shell charged and caused by electric shock. Ground symbol is E (EarthWire); can be divided into power supply ground, circuit ground two kinds. According to China's current standards, GB2681 in the third according to the conductor color marking circuit, generally should be phase line - A phase yellow, B phase green, C phase red. Zero line - light blue, ground is yellow and green, if the three-hole socket, the left is zero, the center (above) is ground, the right is fire.

Expanded Information:

Ground is the abbreviation for grounding device. Ground is further categorized into work ground and safety ground. In order to prevent people in the use of home appliances and office electronic equipment such as electric shock accident and take the protective grounding, is a kind of safety grounding wire.