1.Whats the use of GNAC(Generator Neutral Accessory
Compartment)

2. why generator or any other system require Neutral
Grounding and not Phase grounding

3. what happens if any one of the phase is grounded.

4. if 15kv is grounded directly what will happen, why it
should not be grounded like that

5. use of of NGTR(Neutral Grounding Transformer and
Resistor) for grounding is helpfull and how

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