Why Your Breaker Keeps Tripping (And When It Is Actually Dangerous)

A tripping breaker is the most common electrical call we take across Georgia, and it is also the most commonly misunderstood. The breaker is not the problem. The breaker is the thing that noticed a problem and shut it down. Repeatedly resetting it without finding out why is the electrical equivalent of putting tape over a smoke alarm.

There are three reasons a breaker trips, and they have different levels of urgency.

1. Overload: too much on one circuit

This is the benign one. A 15 amp circuit can carry roughly 1,800 watts, and a continuous load should stay under 80 percent of that. A space heater at 1,500 watts plus almost anything else exceeds it. Kitchens in older homes are the usual offender, because the whole counter often sits on one or two circuits that were installed when a toaster was the biggest appliance in the room.

How to identify it: the trip happens a minute or two after you switch on a specific heavy appliance, and it happens consistently with the same combination of devices.

The fix: redistribute the load, or better, install a dedicated circuit for the heavy appliance. If every circuit in the house is at its limit, that points toward a panel and service upgrade.

2. Short circuit: hot touching neutral or ground

A short is a direct, unintended connection that lets an enormous current flow. The breaker trips instantly and hard, often with a bang or a flash. Causes include a damaged cord, a nail or screw driven through cable inside a wall, a failing appliance, a rodent-chewed run, or a device wired incorrectly.

How to identify it: the breaker trips the moment you reset it, even with everything unplugged from that circuit. That is a strong indicator the fault is in the wiring rather than in something you plugged in.

Urgency: high. A short generates heat at the fault point. Leave the breaker off and call an electrician.

3. Ground fault: current escaping to earth

A ground fault is current finding a path outside the intended conductors, frequently through water or through a person. This is what GFCI protection exists to catch, and it does so at around 5 milliamps, far below the level required to stop a heart. If a GFCI outlet or breaker trips repeatedly in a bathroom, kitchen, garage, basement or exterior location, moisture is the first suspect.

Urgency: high, because ground faults are the category most likely to shock someone.

The warning signs that turn this into an emergency

• The panel, a breaker, or an outlet cover is warm or hot to the touch
• Any burning, sharp, or fishy plastic smell near the panel or a device
• Visible scorching, melting or discoloration on a breaker, outlet or plug
• Buzzing, sizzling or crackling sounds from the panel or wall
• The breaker trips instantly with the entire circuit unplugged
• Lights across the house dim or flicker in time with nothing in particular

Any one of those means stop resetting and call. Our 24 hour emergency line is answered every hour of every day.

What about a breaker that trips for no reason at all?

Breakers are mechanical devices with a finite life. One that has tripped hundreds of times, or that has lived through a lifetime of heat cycling, can weaken and begin tripping below its rated load. That is a genuine possibility, but it is the last thing to conclude, not the first. Ruling out overload, short and ground fault comes first; a worn breaker is a diagnosis of exclusion.

One more thing worth naming: never replace a tripping 15 amp breaker with a 20 amp breaker to make the tripping stop. The breaker is sized to protect the wire behind it. A larger breaker on 14 gauge wire allows the wire to overheat inside your wall before anything trips. It is one of the few genuinely dangerous things a homeowner can do at a panel.

If you are working through this list and have hit something you are not sure about, call (866) 651-5242. Diagnosis is what we do, and we would rather talk you through it than read about it later.