What is the diffrence between earthing,neutral and grounding?
Answer:
Earth and ground are the same thing in electrical terms. Neutral is the return pathway for the live current and helps to complete the circuit.
Grounding and earthing are the same thing. They provide a path for electricity to travel to the ground. They are not normally carrying current unless there is a fault. Neutral is used as the normal return path for electricity and it should be near ground potential unless there is a fault.
You're AC power is generated in a three phase system. The generated voltage is stepped up or down using transformers. In the output of a Y configured trans., there are three hot leads, typically 110v each, and one lead which is at 0 potential. That's the neutral. When you use a 110v device the current flows back to the trans. through the neutral. The neutral is connected to the earth or ground at the power station, at the pole, and depending on where you live also in your fuse box. It sounds like neutral and ground are the same but mixing them up can be fatal.
Grounding and Earthing are different terms used in two field, electronics and electricals.
In electronics the elements ( transistors, Op-amp, FET, JFET..) are grounding for desired or required operation. actually as mentioned buy some fellows here, it is not connected to the " ground " or " Earth ". its a missconcept. Usually the gounding is done to the some terminals of the electronic components .In analog ICs there is one lid defenetily to be connected to the ground. ( i never seen this pin connected to real earth or ground, in my lab !!)
In transisters and Other JFET like components this lids may vary or differ on the basis of circuit.
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