Signs you need an electrician, from urgent to worth a check

Updated November 10, 2026 · KeystoneProGuide editorial team

Which signs mean you should call an electrician now?

The National Fire Protection Association gives a short list of problems for which to call a qualified electrician (or your landlord):

frequent blown fuses or tripping circuit breakers;
a tingling feeling when you touch an electrical appliance;
discolored or warm wall outlets;
a burning or rubbery smell coming from an appliance;
flickering or dimming lights;
sparks from an outlet.

The Electrical Safety Foundation, a nonprofit safety organization, adds unusual sizzling and buzzing sounds from the electrical system and says to contact a qualified electrician immediately when you notice any of these.

Until an electrician has looked, stop using the outlet or appliance concerned. If a smoke alarm sounds, the Consumer Product Safety Commission says never to ignore it: get outside immediately and call 911.

Why take a warm outlet seriously?

Because electrical fires are common and often start where nobody is looking. The NFPA estimates that in 2020 to 2024, fire departments responded to an average of 46,652 home fires a year involving an electrical failure or electrical equipment. Those fires accounted for about 13% of home structure fires but 18% of home fire deaths. The places they most often started were the kitchen (15%), a bedroom (12%) and the attic or ceiling (9%).

The U.S. Fire Administration's figure for 2021 is narrower, counting 24,200 residential building electrical fires that caused an estimated 295 deaths. The two bodies count these fires in different ways and over different years, so the figures are not directly comparable.

Do flickering lights always mean a wiring fault?

Not always, but they are on both lists for a reason. In a house wired with aluminum, the Consumer Product Safety Commission names flickering lights among the signs of a fire hazard in 15- and 20-ampere circuits, along with faceplates on outlets or switches that are warm to the touch, circuits that stop working and a smell of burning plastic. It warns that a failure in those circuits can cause arcing and a fire that spreads inside the walls before anyone notices. The CPSC estimates that 2 million homes were wired with aluminum between 1965 and 1973, so if your house dates from those years, mention it when you call.

What does a breaker that keeps tripping tell you?

That something is asking more of the circuit than it can give, or that there is a fault. The Electrical Safety Foundation says a tripped breaker is most likely the result of too many appliances overloading the circuit, and that if resetting it does not solve the problem, there may be a more serious issue for an electrician to diagnose.

Which signs point to an outdated system rather than an emergency?

Several that a house can live with for years, but that an electrician should look at:

Two-slot outlets. The foundation says grounded outlets, with a round third hole, are required in modern homes, and that a home without them is likely missing critical safety features. The U.S. Fire Administration warns never to force a three-prong plug into a two-slot outlet.
Loose outlets. The Fire Administration says to replace wall outlets when plugs do not fit snugly.
A fuse box. The foundation says panels installed before 1965 used fuses, and that early fuse panels were commonly 30 or 60 amps.
Cords everywhere. Extension cords used as permanent wiring, or power strips plugged into power strips. The NFPA says extension cords are intended for temporary use, and the foundation suggests having circuits or outlets added instead.
No ground-fault protection near water. The foundation's account of the 2020 National Electrical Code lists ground-fault protection in bathrooms, garages, outdoors and at kitchen countertops in renovated areas.
An old house with new demands. The foundation says many older homes may not have an electrical system adequate for today's needs.

Are there signs after a storm or flood?

Yes. If water has reached outlets, wiring or the panel, the CPSC says not to touch wet appliances that are still plugged in, and to have a qualified professional or utility representative inspect the home and replace the electrical wiring, circuit breakers and fuses that have been under water before you use the appliances again.

What should you do while you wait?

Unplug or switch off whatever is on the affected outlet or circuit.
Leave the inside of the panel alone. The CPSC advises consumers not to open the panelboard or breaker compartment because it can expose live wires.
Do not swap in a larger fuse. The foundation calls that a very dangerous practice and a serious fire hazard.
Make sure your smoke alarms work. The foundation says to test smoke detectors monthly.

What a homeowner can safely check, and what to leave alone, is in doing it yourself or hiring. What a visit costs is in the cost guide, how to pick a company is in how to choose an electrician, and local electricians are on the electricians directory page.

Sources

Electrical Home Fire Safety, National Fire Protection Association (NFPA)
Appliance and Electrical Fire Safety, U.S. Fire Administration
Home Electrical Fires, Electrical Safety Foundation International (ESFI)
Understanding Your Home Electrical System, Electrical Safety Foundation International (ESFI)
Home Safety Devices - Renovate Your Home to Code, Electrical Safety Foundation International (ESFI)
May Is National Electrical Safety Month: Good News for Homeowners - Aluminum Wiring Fix Still Available, U.S. Consumer Product Safety Commission
CPSC Warns of Generator, Carbon Monoxide and Fire Hazards Ahead of Hurricane Season, U.S. Consumer Product Safety Commission
Winter Storm May Knock Out Power; CPSC Warns of Deadly Carbon Monoxide and Fire Risks, U.S. Consumer Product Safety Commission