·Ground Wire
As American power systems for example, in addition to Hot Line and the Neutral Line, the intermediate round plug Pin is the grounding Pin, it can not only interference the useless current and noise into the earth, but also protect the users not be shock. A lot of UPS marks the voltage between the waterline and the ground ,that can prevent the electric shock caused by products injured people.
Copyright ? 2003 - 2023 . All Rights Reserved