What does a GFCI protect against?

Electric shock from ground faults.

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  1. Low battery power
  2. Electric shock from ground faults ✔
  3. Overvoltage from lightning

Why: A Ground Fault Circuit Interrupter cuts power when current leaks to ground.

Huh, didn't know that: A Ground Fault Circuit Interrupter cuts power when current leaks to ground.

The dad joke
That GFCI is a real lifesaver.
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References

Answer: Electric shock from ground faults. A Ground Fault Circuit Interrupter cuts power when current leaks to ground.

  1. Scouting America: Electricity www.scouting.org/merit-badges/electricity
    Equipment and their use: circuit, conductor, Ground Fault Circuit Interrupter (GFCI)
    Checked 2026-11-07.

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