California Cosmetology Written ExamSafety and Infection ControlHard
A salon owner is installing new electrical outlets near the pedicure foot spa stations, which are frequently exposed to water. To minimize the risk of electrical shock in this wet environment, these outlets should be equipped with which safety device?
- AA standard surge protector
- BA ground-fault circuit interrupter (GFCI)
- CA multi-outlet power strip
- DA dimmer switch
Show answer & explanationAnswer & explanation
Correct answer: B. A ground-fault circuit interrupter (GFCI)
Ground-fault circuit interrupters (GFCIs) detect imbalances in electrical current and shut off power instantly, preventing shock in wet environments such as near foot spas or sinks — a standard electrical safety requirement in areas with water exposure.
Why the other options are wrong
- A. Surge protectors guard against voltage spikes but do not prevent shock from ground faults.
- C. Power strips increase load and fire risk if overloaded; they don't prevent shock.
- D. Dimmer switches control lighting intensity and have no shock-prevention function.
GFCI Outlets in Wet Areas
Ground-fault circuit interrupters cut electrical power instantly when current imbalance is detected, protecting against shock near water sources like foot spas.
- Required in areas with water exposure
- Prevents electrical shock and electrocution
- Different function from surge protectors or power strips
Memory trick: GFCI = 'Guard From Current Injury' near water.