difference between neutral and earth

Dear Sir,

Take a typical case of Transformer or a panel. R,Y,B are the phases and N be the neutral. Neutral can be solidly grounded or it shall be earthed.

Earthing is the grounding of the body odf the Transformer, Transformer Wheels, OLTC etc., Panel Body.

The Size of the of the neutral conductor shall be half the size of the Phase. The earthing Bus bar shall be depending on the fault current for the earthing grid designed.

if any doubt please revert.

Regards,

N.Suresh

dear suresh , as we know that there are 3 wires normaly in our gazets ,

phase , neutral , earth

now we know that neutral carries the leakage current

then at the same time earth wire would also be there , i.e what is the role of earth wire.

Pl look at earlier thread.

Let's keep this simple. An alternating voltage source puts out a sine wave with the Line side following the curve and the Neutral being the zero or reference point.

The Ground or Earth is a separate conductor physically connected to Mother Earth itself and is used to provide another electrical reference point.

In some applications, it may be useful to reference the voltage to ground, while in others it may not be so useful. Typically, household voltage supplies are grounded, so the Ground and Neutral are connected together - but only at the Main Panel. Everywhere else in the house, the Neutral and Ground are kept separated. There are safety and performance reasons for this, but if you were to measure the voltage between the Neutral and Ground you should get zero volts.

Hope this helps

"... if you were to measure the voltage between the Neutral and Ground you should get zero volts."

Although you rarely will.