# Identify the properties of the neutral wire and earth wire from the given list. i) It is connected to the neutral point of the transformer that is earthed at the substation. ii) It is solid earth at the substations iii) Unbalanced current flows through it iv) Only fault current flows through it

Identify the properties of the neutral wire and earth wire from the given list. i) It is connected to the neutral point of the transformer that is earthed at the substation. ii) It is solid earth at the substations iii) Unbalanced current flows through it iv) Only fault current flows through it

### Right Answer is: Neutral wire: (i) and (iii);Earth wire: (ii) and (iv)

#### SOLUTION

Neutral:

• Neutral is the return path for an AC circuit that carries current in normal conditions.
• This current could be primarily because of the phase current imbalance. The magnitude of this current is a fraction of phase current or in a few cases even double of the phase currents.
• It is connected to the neutral point of the transformer that is earthed at the substation.
• Unbalanced current flows through it

Earth:

• Earth, also known as a ground, is used for safety concerns against leakage or residual currents in the system.
• While phase and neutral are connected to main power wiring, the earth is connected to the body of equipment that doesn’t carry current in normal conditions but in case of any insulation failure, is supposed to carry some minor current.
• It is solid earth at the substations
• Only fault current flows through it
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