Ground (electricity)

A typical earthing electrode (left of gray pipe), consisting of a conductive rod driven into the ground, at a home in Australia. Most electrical codes specify that the insulation on protective earthing conductors must be a distinctive color (or color combination) not used for any other purpose.

Metal water pipe used as grounding electrode

Busbars are used for ground conductors in high-current circuits.

3 ply static dissipative vinyl grounding mat shown at macro scale

For different type of earthing system refer Earthing system.

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.

单词	Return current
释义	Return current 原声例句还乡 There he leant over the wall and lowered the lamp, only to behold the vortex formed at the curl of the returning current. 然后他在岸墙上俯身探望，把灯放低，但只能看到回流的浪卷形成的漩涡。英语百科 Ground (electricity) For different type of earthing system refer Earthing system. In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.
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Return current

Ground (electricity)