What does the ground electrode do?

ground electrode. A conductor buried in the ground, used to maintain conductors connected to it at ground potential and dissipate current conducted to it into the earth, or to provide a return path for electric current in a direct-current power transmission system. Also known as earth electrode; grounding electrode.Click to see full answer. Just so, why do you need a ground electrode?The ground electrode is used for common mode rejection. That means that it takes signals that all of the electrodes are reading and cancels them out of the readings. This could include things like electrical frequencies from power sources, currents running through the computer itself, magnetic or radio signals, etc.One may also ask, what is a ground electrode ECG? “Ground” and “reference” are often used interchangeably. A ground electrode for EEG recordings is often placed on the forehead (but could be placed anywhere else on the body; the location of the ground on the subject is generally irrelevant). Beside this, what does ground do in a circuit? 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.Do I need two grounding rods? Ground rod spacing. If it has a ground resistance of 25 ohms or more, 250.56 of the 2005 NEC requires you to drive a second rod. When using the typical 8-foot or 10-foot ground rod, you get the best results by spacing the rods at least 16 or 20 feet apart, respectively.