Why Does My Circuit Breaker Keep Tripping?
Reviewed by Penny Electric - licensed NV C-2 electrical contractor (#74758)
A breaker that trips once did its job. A breaker that keeps tripping is reporting a problem, and the pattern of the trips tells you what kind. This guide walks through the three causes - overload, short circuit, and ground fault - how to tell them apart from your side of the panel, and which ones you can resolve yourself. When resetting has become routine, our circuit breaker repair team in Las Vegas finds the fault instead of masking it.
First, read the pattern
Trips under load (the AC kicks on, the microwave runs) point to overload. Instant trips the moment you reset point to a short circuit. Trips on outdoor, kitchen, or bathroom circuits with a GFCI breaker point to a ground fault. The fix is different for each, so thirty seconds of observation saves guesswork.
Cause 1: Overloaded circuit
Every circuit has a rated capacity, and most valley homes built before the 2000s were wired for a fraction of today's plug-in load. If the trip happens when a specific appliance starts, add up what shares that circuit. The short term fix is moving load to another circuit. The real fix, when the math simply exceeds the wire, is a dedicated circuit for the heavy appliance.
Cause 2: Short circuit
A hot wire touching neutral or another hot drops resistance to nearly zero, current spikes, and the breaker slams off instantly - that speed is the tell. Unplug everything on the circuit and reset. If it holds, plug items back one at a time; a failed device cord is the common culprit. If it trips with nothing plugged in, the short is in the wiring or a device box, and that is professional territory: energizing a shorted circuit repeatedly is how insulation burns.
Cause 3: Ground fault
Current leaking to ground - often from moisture in an outdoor box, a worn appliance, or a damaged wire - trips GFCI protection fast. In monsoon season we see a spike of these from wet exterior outlets and landscape lighting. If a GFCI breaker will not hold after everything is unplugged and dried out, the leak is in the wiring itself.
The breaker itself can be the problem
Breakers wear out. One that trips at lower and lower loads, feels hot, buzzes, or will not reset firmly has likely failed internally. Certain legacy panel brands common in older Las Vegas homes - Federal Pacific and Zinsco among them - are known for breakers that either trip constantly or, worse, fail to trip at all. If your panel carries one of those names, replacement is a safety decision, not a convenience one.
What you can safely do
Read the pattern, redistribute load, unplug and isolate devices, press test buttons on GFCIs, and label the circuit while you are there. Resetting a breaker is safe. What is not: forcing a breaker that wants to trip, taping or blocking a breaker, replacing a breaker with a larger one to stop the trips, or opening the panel cover. Oversizing a breaker removes the protection while leaving the fault.
When to call
Call a licensed electrician for instant re-trips with everything unplugged, any warm or buzzing breaker, repeated trips on the main, aluminum or Federal Pacific/Zinsco equipment, or any trip you cannot explain after reading the pattern. Penny Electric (NV C-2 #74758) has diagnosed valley panels since 2008 - our circuit breaker repair service covers diagnosis, breaker replacement, and the dedicated circuits that end chronic overloads. (702) 279-6040.