usman


{ City } sahiwal
< Country > pakistan
* Profession * electrical engineer
User No # 30043
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Question { 12719 }

why aggregate is placed all around substation ground.


Answer

It is placed for human safety. Lightening can cause step
potential between 2 feet of the person standing in yard.
So gravel is placed so that moisture is maintained and
potential of earth remains equal throughout the yard hence
step potential will be zero.

Is This Answer Correct ?    9 Yes 1 No