Warning Signs of an Electrical Problem (and What to Do Next)

Which electrical warning signs mean I should call 911?

Call 911 for smoke, flames, a fire you cannot put out, sparks that keep coming, or a downed power line. Get everyone out first. Do not go back inside to look for the cause. Do not touch a downed line or anything in contact with it.

Oncor says never to approach, touch or attempt to move a downed power line or any object in contact with a power line, because contact can cause serious injury or even death. If you see a downed line, leave the area and call 911. The 911 operator contacts Oncor.

Call 911 when you see or smell:

1. Smoke or flames from an outlet, switch, panel, cord or appliance.
2. Sparks that continue after you unplug the item.
3. A strong burning smell with visible smoke.
4. A downed or sagging power line, or one touching a tree, car or fence.
5. Water pouring onto a panel or live outlets.
6. Anyone who has been shocked and is hurt or unresponsive.

After the emergency, do not turn power back on until a licensed electrician or the fire department says it is safe. For storm cases, read our post on electrical checks after a North Texas storm and our pillar page on emergency electrical help.

What signs mean I should call an electrician the same day?

Call the same day for a burning or rubbery smell, a hot or discolored outlet or cover, a buzzing or sizzling sound from the panel or an outlet, or a tingling feeling from an appliance. These are signs of heat or a fault. Do not wait for the weekend.

NFPA tells people to call a qualified electrician for frequent problems with blowing fuses or tripping breakers, a tingling feeling from an appliance, discolored or warm wall outlets, a burning or rubbery smell from an appliance, flickering or dimming lights, and sparks from an outlet. ESFI adds sizzling and buzzing sounds from the electrical system.

What signs mean I should schedule a visit soon?

Schedule soon for lights that flicker or dim, breakers that trip now and then, outlets that stop working, or a panel that has no room for new circuits. These are slower warnings. They still point to a cause, and the cause rarely goes away alone.

1. Flickering lights or dimming lights, especially when a large appliance starts.
2. A breaker that trips more than once in a week.
3. Outlets or switches that work only some of the time.
4. Plugs that fit loosely in an old outlet.
5. Two-prong outlets or ungrounded outlets in a home that now has grounded devices.
6. Extension cords used as permanent wiring.
7. A fuse box or a panel that is full.

If many items show up at once, ask for an inspection. Our guide on electrical panel replacement explains when the panel is the issue.

Why does my breaker keep tripping?

A breaker trips to stop too much current or a fault. The CPSC says to investigate why a fuse blows or a breaker trips, and not simply to replace the fuse or reset the breaker. A breaker that repeats is telling you something.

The CPSC lists common causes as an overloaded circuit, too many appliances plugged in, a malfunctioning product, or a short circuit. An overload means too many things draw power on one circuit. The CPSC advice ends with a plain line: when in doubt, consult a licensed electrician.

For a longer walk-through, see our post on a breaker that keeps tripping.

What can I safely check myself?

You can look, listen and smell. You can unplug things. You cannot open anything. If it takes a screwdriver, it is a job for a licensed electrician.

Safe checks:

1. Unplug the device on the circuit and see if the problem stops.
2. Look at the outlet cover for discoloration or cracks, without removing it.
3. Press the TEST and RESET buttons on a GFCI outlet, as its label directs. See GFCI vs AFCI.
4. Note which breaker trips and when.
5. Take photos of anything you see.
6. Check whether neighbors have power. If the whole street is out, call your utility.

Never do these:

1. Never open a panel, outlet box or fixture to look inside.
2. Never tape over a reset button or hold a breaker on.
3. Never replace a breaker with a larger one to stop the tripping.
4. Never use water on an electrical fire.
5. Never keep using an outlet that is hot, discolored or buzzing.

What do I tell the electrician when I call?

Give clear facts. They help the electrician send the right person with the right parts.

1. What you saw, smelled or heard.
2. Where it happened, and which room or circuit.
3. When it started, and whether it repeats.
4. What was running at the time.
5. Which breaker tripped, if any.
6. The age of the home, and the panel brand if you can read the label.
7. Photos of the outlet, cover or label.

Mention a Federal Pacific panel or aluminum wiring if you know of one. Our guide on Federal Pacific panels and aluminum wiring explains both.

Which signs are easy to miss?

Some signs are quiet. Pay attention to small, repeated changes: a light that dims each time the AC starts, a plug that feels warm, an outlet cover that looks slightly brown, or a faint smell near the panel that comes and goes. ESFI lists dim and flickering lights among the telltale signs.

A regular home electrical check is a good habit. Our home electrical safety checklist walks through it room by room. If you also have smoke and carbon monoxide alarms, test them. See our guide to smoke and CO alarms.

Where do warning signs show up around the house?

Different rooms bring different signs. Knowing where to look makes the check faster.

When you see any of these, unplug what you can and stop using the circuit. Then follow the levels above: 911, same day, or soon. If you are not sure which level fits, treat it as the higher one and call. An electrician would rather take a short call about a false alarm than visit after damage is done.

Next step

If you saw one of these signs, do not wait for it to get worse. Read about our residential electrician services, then call (817) 481-8606 or use the quote form at /contact. For smoke, fire or a downed line, call 911 first.