The ranking is rules, not opinion — here is exactly how an answer set becomes a ranked result and a safe next check.
source-governedDiagnostic estimate. Not a quote, not a substitute for a licensed electrician.sources verified 2026-06-20view sources ↓
Method
The trip pattern is the primary signal — an instant trip with nothing connected is a fault, not a load problem — and each firing rule is shown with its weight.
Load is checked against the 80% continuous rule (12 A on a 15 A breaker, 16 A on a 20 A), and GFCI/AFCI breakers are scored as leakage/arc detectors rather than thermal overload.
The tool ranks causes but never endorses defeating a breaker: repeatedly resetting, taping, or oversizing is out of scope because the breaker is protecting the wire.
code NEC 210.12 — Arc-fault protection · verified 2026-06-20
code NEC 240 — Overcurrent protection (do not oversize) · verified 2026-06-20
manufacturer Breaker manufacturer trip-curve and application notes · verified 2026-06-20
Where to stop. Resetting a breaker once is homeowner-safe. A breaker that keeps tripping is protecting against a real fault or overload — do not repeatedly reset it, and never tape, wedge, or oversize it. Opening the panel and any wiring repair is a licensed electrician's job. This is general information, not a quote and not a substitute for a licensed electrician.
Electrical Fault Check provides general diagnostic information only. It is not professional advice, not a quote, and not a substitute for a licensed electrician. Do not work on live wiring. If you see smoke, sparks, burning smell, heat, shock, water exposure, or repeated tripping, stop using the circuit and contact a licensed electrician or emergency services as appropriate.