Answer / vilas

As per rules four earthings are required.
two for neutral. star point
Two for the transformer tank i.e.body of the transformer.

Answer / ars326

1.Transformer tank
2.Neutral
3.lightning arrestor

Answer / srinivas.v

Two nutralearthsandtwo
bodyearths.

Answer / deadzg_devil

Mainly two types of earthing are provided:
1)System Earthing:The neutral is connected to ground so that in case of imbalance the zero impedance current may pass thru the ground.
2)Equipment Earthing:This is provided to safeguard the outter body of transformer in case any fault occurs or any live wire touches the ground , it can redirect the current to ground.

Answer / virendra

Total 4 earthing 2 Nos for Body earthing & 2 for Neutral
earthing & also interconnect both the body earthing to each
other & same as in neutral earthing.

Answer / ram

minimum 3 earthing. 1- neutral earthing, 2- body earthing &
3 - common neutral body

Answer / ullas

mainly two earthing.
1. neutral earthing.
2. transformer body earthing

Answer / sumudu

Two earth banks for neautral; Common earth for Transformer
body & Lighting Arrestor.

Answer / k.prakashchandra

Answer No. 1 is correct.For neutral, two distinct connections

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