What to know
- Arcing faults — damaged wires, loose connections, pinched cords — start thousands of home fires every year.
- The U.S. Consumer Product Safety Commission estimates AFCIs can prevent at least 50% of all electrical fires.
- If your arc-fault breaker trips, that's actually a positive: it's surfacing a pre-existing electrical problem that could have led to a future fire.
- Modern electrical code requires AFCI protection in most living areas — many older Puget Sound homes have none.
What an arc fault is
An arc fault is electricity jumping across a gap it shouldn't — through damaged insulation, a loose terminal, a nail that nicked a cable, or a cord pinched behind furniture. Arcs run extremely hot and ignite surrounding wood and insulation. A standard breaker won't catch them because the current often stays below its trip threshold; an AFCI recognizes the electrical signature of arcing and cuts power immediately.
A tripping AFCI is doing its job
Homeowners sometimes see a tripping arc-fault breaker as a nuisance and ask to have it removed. The opposite is true: a trip means the breaker detected real arcing somewhere on that circuit — a problem that existed before the breaker did, and one that could have led to a future fire. The right response is to have a licensed electrician trace and repair the fault, never to swap in a standard breaker.
Older Seattle-area homes are the highest risk
Homes with knob-and-tube wiring, aluminum branch circuits, back-stabbed outlets, or decades of DIY additions carry the highest arc-fault risk — and they're exactly the homes that predate AFCI requirements. During a panel upgrade or safety inspection, Eco evaluates which circuits need AFCI protection to bring your home to current safety standards.
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Common questions
My arc-fault breaker keeps tripping — should I replace it with a regular one?
No. A tripping AFCI is detecting genuine arcing on that circuit. Replacing it with a standard breaker removes the protection while leaving the fire hazard in place. Have a licensed electrician find and fix the underlying fault.
Are AFCIs required in Washington?
Current electrical code requires AFCI protection for most habitable rooms in new construction and often when circuits are extended or modified. Older homes aren't forced to retrofit, but adding AFCI protection during a panel upgrade is one of the highest-value safety improvements available.
What's the difference between AFCI and GFCI?
AFCIs prevent fires by detecting arcing; GFCIs prevent electrocution by detecting current leaking to ground. Many locations benefit from both — dual-function breakers provide the two protections in one device.