Physics · Power Power Sub-stations
What is the primary reason for spreading crushed gravel or stone in substation switchyards?
- 1To reduce step and touch potentials during short-circuit faults✓
- 2To increase the electrical conductivity of the ground surface
- 3To completely eliminate the risk of oil fires
- 4To keep the yard clean and dust-free
Correct answer
To reduce step and touch potentials during short-circuit faults
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