GFCI protection addresses ground-fault shock hazards. AFCI protection addresses certain dangerous arcing conditions.
GFCI: protection against ground faults
A ground-fault circuit interrupter monitors for an imbalance in current and interrupts power when a ground fault is detected. This helps reduce shock risk where electricity may take an unintended path. Protection may be provided at a receptacle or breaker. Electrical Safety Foundation: home safety ↗
An outlet without visible test buttons may be protected by a device elsewhere. Do not determine protection by appearance alone; ask the electrician to verify which outlets are protected.
AFCI: protection against arc faults
An arc-fault circuit interrupter is designed to detect certain arcing conditions that can lead to fire. It serves a different purpose from GFCI protection. Some devices combine both functions.
Ask which protection the applicable code and project scope require. This guide does not provide a room-by-room code determination, and it should not be used to substitute one device for another.
A trip is information
A tripping protective device may be responding to an actual fault. Repeatedly resetting it or replacing it with a device that lacks protection is not a remedy. Stop using the affected equipment and arrange evaluation when trips recur.
Follow the device manufacturer’s testing instructions. If testing fails, the device will not reset or there are heat or damage signs, have it assessed. Do not open devices or work inside the panel.
Plan an upgrade
Identify rooms being remodeled and any recurring trips. Ask the electrician to document existing protection, propose compliant changes and explain any needed wiring corrections. A protective device does not eliminate the need to assess the circuit.
For Naperville, start with the permit and code guide. Include device locations and testing instructions in your final project documentation.