Answer / ashutosh kumar shukla

Earth resistance Must as low as possible to whom even if
any small leakage will occurs can easily be ground
Max. Resistance for

power industrys is: 1 ohm
Communication System :0.5 ohm is allowed by Indian
Standered & Building Codes

we have consol make 3 phase servo stabilizer for cnc m/c. while installing the earth neutral voltage is 1.7 volts at stbilizer off condition and when stabilizer get on en voltage reaches 4.8 volts (new earthing is done and neutral is helthy condition all phase to neutral volts 440,442,441 v)why this happen.solution for cause.

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