Electricity & EquipmentQuestion 102 of 484
A GFCI (ground-fault circuit interrupter) outlet is required by code in salon areas where water and electricity may meet. Its main purpose is to:
a.Increase the voltage delivered to high-power equipment
b.Filter electromagnetic interference from radios
c.Quickly shut off the circuit when it detects a small current leakage to ground, helping prevent electrocution
d.Convert AC into DC for galvanic devices
Explanation
A GFCI compares current going out on the hot wire with current returning on the neutral. If even a small imbalance (around 5 milliamperes) flows to ground — for example, through a person standing in water — the device trips within milliseconds, sharply reducing the risk of electrocution.
Law Reference: 8 CCR §2340Practice all 484 questions free — no signup required.
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