How to Reset a Tripped Circuit Breaker

Two things trip a standard breaker. Either the circuit pulled more amps than it was rated for (an overload), or the current spiked from a short - thousands of amps in a fraction of a second. Knowing which one is useful. An overload usually means something on that circuit was drawing too much. A short usually means a damaged cord, plug, or appliance. A 15-amp breaker is designed to trip and save the wiring. That's its job.

Skip this step and the breaker will trip again the second you reset it. If the circuit was overloaded, unplug whatever pushed it over - the second vacuum on the same outlet, the extra appliance, whatever was running when the lights went out. If you suspect a short, inspect the cord on the last thing that was plugged in. Look for pinched, melted, or frayed insulation. Only head to the service panel once you're sure the cause is gone.

Open the main service panel. You're looking for one breaker whose handle isn't fully up and isn't fully down - it's sitting right in the middle. That middle position is unique to a trip and it's how you spot the bad one at a glance. If you try to push the handle straight back to the ON position, it won't catch. It'll just bounce back to the middle. The mechanism is latched internally and has to be unlatched before it can hold.

This is the step most people get wrong. Take the handle and push it all the way to the OFF position with a firm, deliberate motion. You'll usually feel or hear a small click. That click is the internal mechanism resetting itself. If you push too gently or stop partway, nothing resets and the breaker won't stay on when you try to flip it.

Now push the handle back to ON. It should hold without bouncing and power should return to the circuit. If it snaps back to the middle the instant you let go, the fault that tripped it is still there. Don't keep pushing. Go back and look harder for the cause - an appliance you forgot to unplug, a light fixture with a short, or something else feeding the circuit.

Your electric range, dryer, water heater, and some other 240-volt appliances run on double-pole breakers. The two handles are physically tied together so if one leg faults, the whole thing trips. Reset works the same way - push both handles firmly to OFF as one unit, then back to ON. Kitchen split receptacles also use a double-pole, so if your counter outlets are dead, check there too.

GFCI breakers protect against ground faults (shocks). AFCI breakers protect against arc faults (fires). Both look like standard breakers but have a small test button on the face. If one trips, reset it the same way you'd reset any other breaker - firmly to OFF, then back to ON. Once a month, press the test button on each one. The breaker should snap to the tripped position. If nothing happens, the protection circuitry has failed and the breaker itself needs to be replaced.