Earthing:
Earthing means connection of the non current carrying part of electrical equipment to the Earth.
Advantage:
- During fault condition if current flows through the equipment's, the chances of getting shock to the electrician will increases, if Earthing is done then all the current will be drawn to the Earth because equipment is in some potential during fault condition and Earthing point is in zero potential ,then all the current will be drawn to the Earth and chances of getting shock will decreases.
Grounding:
Grounding is connection of the neutral wire(which carry return current) to the Earth.
Application:
- Grounding is done of neutral point of the star connected transformer.
- Grounding wire of lighting arrester is connected to the Earth which provide current path to the Earth.
- During fault condition all the excess current is transfer to the Earth to the safety of the electrical equipment's
Note:
Ground in electronics doesn't mean wire is physically connected to the Earth it simply refers to the zero potential from the other points.
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ReplyDeleteEarth circuit send the fault current to the earth. Nice info
ReplyDelete