A GFCI is designed to prevent electrical hazards, and shutting off power is normal. If your GFCI keeps tripping, however, it may point to a problem with your electrical system that warrants further investigation. Some causes, such as an overloaded circuit, are straightforward to resolve, while others may need professional attention. Learn the common reasons why GFCI outlets may keep tripping and when to call the High 5 electrical team in the Denver Metro Area.
What is a GFCI Outlet?
Ground fault circuit interrupter (GFCI) outlets are electrical safety devices that protect against electrical hazards. GFCI outlets look similar to regular outlets, but they usually have a test and reset button on the faceplate. These outlets closely monitor the flow of electricity in the circuit and cut off power almost instantly if they detect even minor current abnormalities, stopping the current when a ground fault occurs. GFCI outlets can protect multiple downstream outlets along the same circuit.
By cutting off power, GFCI outlets serve several important purposes:
- Preventing ground faults and electrical shock.
- Reducing risk of electrical fires.
- Protecting appliances and devices.
- Satisfying electrical code requirements.
Where are GFCI outlets located?
The National Electrical Code (NEC) requires GFCI protection in areas with more exposure to water or moisture. That includes:
- Bathrooms
- Kitchens
- Garages
- Laundry rooms
- Basements
- Outdoor areas
6 Reasons GFCI Outlets Keep Tripping
GFCI outlets are necessary for electrical system safety, but they sometimes trip unexpectedly. Understanding how and why GFCI outlets trip may help you troubleshoot underlying electrical system problems.
1. Overloading the circuit
Electricians account for how much power a circuit needs depending on its purpose. GFCI outlets protect the circuit and the connected devices if the current exceeds the circuit’s capacity. For example, hairdryers, toasters, power tools, and space heaters have high energy requirements and are more likely to overload a circuit with insufficient capacity.
Circuits may exhibit warning signs of potential overload before they occur, such as:
- Flickering lights.
- Underpowered appliances or devices.
- Buzzing sounds.
- Warm or scorched outlets.
To fix this issue, unplug some devices and test the outlet again. If it continues to trip, the circuit may be undersized for the power demand and require a professional inspection.
2. Ground fault issues
A ground fault occurs when electricity deviates from its intended path, instead routing from the power source to the most direct path to the ground. This most often happens because of either underlying electrical problems or external factors, such as damaged wiring or water exposure.
Before attempting to reset the outlet, ensure that the area is clear of water and other potential hazards. Unplug all appliances and devices from the GFCI outlet, including those in other parts of the circuit, and reset the outlet. If it continues to trip with nothing plugged in, the problem may be with the wiring.
3. Wiring problems
Frayed or exposed wiring, loose or corroded connections, and damaged insulation cause unpredictable electrical behavior, sometimes leading to GFCI outlet trips. They increase the risk of electrical fires and ground faults and therefore require a licensed electrician to diagnose and repair.
4. Appliance malfunctions
A malfunctioning appliance or device plugged into a GFCI outlet can cause frequent tripping. Deteriorating insulation, faulty wiring, or other electrical problems within the appliance may cause a current leakage, which the GFCI outlet detects as a current abnormality and safety risk.
If multiple appliances and devices are plugged into the circuit, unplug them and test them individually. The faulty appliance may cause the GFCI outlet to immediately trip, but it may also show these signs:
- Buzzing sounds
- Burning or melting plastic smells
- Warm or hot to the touch
- Sparking or shocks
If you suspect an appliance is faulty, stop using it immediately to avoid damage to your electrical system and further hazards. Depending on the problem’s severity, the appliance may need repairs or replacement.
5. External factors
Outside of wiring or appliance problems, certain external factors can also cause GFCI outlet trips. For instance, water puddles, damp surfaces, and high humidity may infiltrate and trigger the GFCI outlet. Outdoor GFCI outlets should be weather-resistant and sealed to prevent infiltration from rain. Indoors, maintain proper ventilation to prevent excessive humidity.
Power surges from lightning strikes may also trip a GFCI outlet by sending a spike of electricity through the home’s wiring. Similarly, fluctuations from the grid may also cause surges and trigger the outlet’s shutdown safety mechanism. Your electrician may recommend installing a whole-home surge protector to minimize potential damage to your electrical system and devices.
6. Aging or damaged outlet
Like other electrical components, GFCI outlets degrade over time — its internal sensors may become faulty and become less responsive or overly sensitive. GFCI outlets last about 15 to 25 years, but underlying electrical problems may accelerate wear. If your GFCI is failing, it may show these signs:
- Frequent tripping without a clear cause.
- Unable to reset — the test button doesn’t pop back out.
- No power to the outlet.
- Discoloration, cracks, or other damage.
- Sparking or buzzing.
Importance of Regular GFCI Maintenance and Testing
A malfunctioning GFCI outlet may not provide protection when needed, leaving your home vulnerable to electrical hazards. Regular GFCI outlet testing is a simple way to verify proper function and electrical system safety.
Periodically test your GFCI outlets. Press the test button to confirm that the outlet immediately cuts off power, then press reset to restore power. If the outlet doesn’t trip or reset properly, it may be faulty and require professional inspection. Regular maintenance and timely repairs help maintain a safe electrical system, preventing failures and reducing the risk of electrical shocks or fires.
Having Problems With an Electrical Outlet? Contact Expert Electricians at High 5
If your GFCI outlet keeps tripping despite troubleshooting, rely on a licensed electrician. For the best electrician services in The Greater Denver Metro Area, call our team without delay. We know how important it is to have power throughout the home, and that just one faulty light or outlet can be a major inconvenience. Contact us or schedule a service online today — at High 5, our expert electricians provide expert diagnosis, repairs, and GFCI installations to keep your home safe.
