Many devices or a long run sum small leakages past the threshold — split the load across circuits rather than replacing the device.
Stop and call a licensed electrician or emergency services now if there's smoke, sparks, a burning smell, heat, shock, or water near the problem. Otherwise it's safe to answer the questions below.
The likely readout
Most likely cause
Accumulated leakage — many devices or a long downstream run sum enough small leakages to cross the trip threshold
Ranked by fit to your answers
1
Accumulated leakage — many devices or a long downstream run sum enough small leakages to cross the trip threshold
76
SAFE NEXT CHECKLong runs and many devices each leak a little; together they can cross the ~5 mA threshold. Split the load across circuits or shorten the run; this is normal physics, not a broken device.
Where to stop. Drying a receptacle, fitting an in-use cover, and unplugging downstream loads are homeowner-safe. Replacing a GFCI or chasing a fault inside boxes means live conductors — if a GFCI keeps tripping with nothing plugged in, that's a wiring fault for a licensed electrician. This is general information, not a quote and not a substitute for a licensed electrician.
Try the safe next check above. If it doesn't resolve it, or would mean working on wiring or a panel, stop and call a licensed electrician — don't replace parts on a guess. Open the full tool to change any answer for your exact situation, or try a related check below.
source-governed · verified 2026-06-20
Sources
standard UL 943 — GFCI trip threshold (Class A, ~4-6 mA) · verified 2026-06-20
code NEC 210.8 — GFCI locations (damp/wet) · verified 2026-06-20
code NEC 406.9 — Receptacles in damp/wet locations (in-use covers) · verified 2026-06-20
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.