GFCI vs AFCI: What They Do, Where California Code Requires Them, and Why They Trip
Two small devices prevent the majority of electrical injuries and fires in modern homes. Here is what every homeowner should know.
GFCI: ground fault circuit interrupter
A GFCI senses tiny current leaks, like electricity flowing through a person, and shuts off in milliseconds. It is required in kitchens, bathrooms, garages, laundry rooms, outdoors, crawlspaces and anywhere within six feet of a sink. Our GFCI outlet installation service brings older homes up to current requirements.
AFCI: arc fault circuit interrupter
An AFCI breaker detects the electrical signature of arcing from damaged cords, loose connections or nails through wiring, and trips before a fire starts. It is required on most living-area circuits in new construction and when circuits are extended.
Why they trip
- Moisture in outdoor or bathroom boxes
- A failing appliance leaking current to ground
- Worn devices: GFCIs wear out after about 10 years
- Shared neutrals on older wiring, a common AFCI nuisance-trip cause
Our electrical troubleshooting team isolates the cause instead of guessing.
Test them monthly
Press TEST, confirm power cuts off, then press RESET. If a GFCI will not reset or trips with nothing plugged in, it needs replacement.
Upgrading an older home
During any electrical panel upgrade we recommend adding AFCI and GFCI breakers to protect entire circuits, not just single outlets.
Call (888) 592-6466 for GFCI and AFCI upgrades in your city.