Physics · Electrical Earthing

How does the ohmic value of the earth electrode resistance affect the overall effectiveness of a safety earthing system?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Effectiveness depends entirely on the thickness of insulation on the earth line.
2Lower resistance improves effectiveness by encouraging immediate fault current detection.✓
3Electrode resistance value has no operational effect on performance.
4Higher resistance improves safety grounding effectiveness.

Correct answer

Lower resistance improves effectiveness by encouraging immediate fault current detection.

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