GFCI vs. AFCI: What They Are and Where BC Code Requires Them
Two acronyms show up constantly in electrical code discussions, home inspections, and panel labels — and most homeowners have never gotten a straight explanation of what they actually do differently.
GFCI: protects against shock
A Ground Fault Circuit Interrupter monitors the electrical current flowing through a circuit and shuts it off almost instantly if it detects current leaking somewhere it shouldn't — like through water, or through a person. This is why GFCI protection is required in areas where electricity and moisture are more likely to meet: bathrooms, kitchens (near sinks), outdoor outlets, garages, and unfinished basements.
AFCI: protects against fire
An Arc Fault Circuit Interrupter detects a different kind of problem — dangerous electrical arcing, often caused by damaged wiring, a pinched cord, or a loose connection, that can generate enough heat to start a fire without ever tripping a standard breaker. AFCI protection is increasingly required in living spaces — bedrooms, living rooms, and similar areas — under current BC Electrical Code.
Why you need both, not one or the other
They're solving two different problems. A GFCI won't catch an arcing fault, and an AFCI won't catch a ground fault. Some newer breakers combine both protections in a single device (dual-function breakers), which is increasingly common in new construction and panel upgrades.
Where BC code currently requires each
Code requirements are specific to location within the home and have been updated over successive code cycles, so the exact requirement can depend on when your home (or renovation) was built or last permitted. Generally:
GFCI: bathrooms, kitchen countertop outlets, outdoor outlets, garages, unfinished basements, and around pools/hot tubs
AFCI: bedrooms and most other living spaces in newer construction
If you're renovating or your home predates current requirements, this is exactly the kind of thing worth confirming with a licensed electrician rather than guessing — code updates aren't retroactive for existing homes in most cases, but any new work typically needs to meet current code.
How to tell if you already have them
Outlets with visible "Test" and "Reset" buttons are GFCI outlets. AFCI protection is usually at the breaker itself (in the panel) rather than the outlet, so it's less visible without opening the panel — worth checking directly if you're not sure.
Renovating or adding circuits?
We'll make sure any new work meets current GFCI/AFCI requirements, and can assess whether your existing home would benefit from adding protection even where it's not strictly required for existing wiring.
Book an electrical safety assessment →
Royle West Electrical Ltd is a Red Seal Certified, CleanBC-registered electrical contractor serving Maple Ridge, Pitt Meadows, Langley, Port Coquitlam, and the surrounding Lower Mainland.
