What is a common consequence of incorrect grounding in a distribution system?

• A. It can create hazardous touch voltages and hinder protective devices from operating correctly.
• B. It improves fault clearing
• C. It increases system voltage
• D. It has no effect

Answer: (A)

Incorrect grounding in a distribution system disrupts the fault current path, which is critical for safety and protective devices. Grounding provides a low-impedance path back to the source when a fault occurs, keeping touch voltages low and ensuring protective devices detect faults promptly. If grounding is improper, fault currents may be insufficient or diverted, so protective devices may not trip as intended or may take longer to operate. That means exposed metal parts can become energized during a fault, increasing shock risk and potential equipment damage. The other options don’t fit because grounding doesn’t raise system voltage and it certainly isn’t without effect; in fact, improper grounding can hinder fault clearing and raise hazards.