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Space heater circuit breaker crisis: the root causes revealed

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er,...

What To Know

  • If the circuit is already burdened with other appliances, adding a space heater can push it over the limit, causing the circuit breaker to trip.
  • In the case of space heaters, a circuit breaker with a lower amperage rating than the heater’s power consumption can cause it to trip.
  • If a power surge occurs, it can cause the heater to malfunction or trip the circuit breaker.

When the chilly winter winds howl, space heaters offer a comforting warmth. But sometimes, these appliances can cause circuit breakers to trip, leaving you in the cold. Understanding the reasons behind this issue is crucial for ensuring a safe and efficient heating experience.

Overloaded Circuit

An overloaded circuit occurs when the total electrical current flowing through it exceeds its capacity. Space heaters are notorious for consuming a significant amount of electricity, especially when operating at high settings. If the circuit is already burdened with other appliances, adding a space heater can push it over the limit, causing the circuit breaker to trip.

Faulty Wiring

Electrical wiring can deteriorate over time, leading to loose connections, shorts, and ground faults. These issues can increase the resistance in the circuit, causing the current to rise and potentially trip the breaker. If you suspect faulty wiring, it’s essential to have it inspected and repaired by a qualified electrician.

Undersized Circuit Breaker

Circuit breakers are designed to protect electrical circuits from overcurrents. However, if the circuit breaker is undersized for the load it is handling, it may trip prematurely. In the case of space heaters, a circuit breaker with a lower amperage rating than the heater’s power consumption can cause it to trip.

Malfunctioning Circuit Breaker

Circuit breakers can also malfunction due to wear and tear, manufacturing defects, or power surges. A faulty circuit breaker may trip without any legitimate electrical problems. If you suspect a faulty circuit breaker, have it tested and replaced if necessary.

Overheating

Space heaters generally produce heat by converting electrical energy into thermal energy. However, if the heater is not properly ventilated or obstructed, it can overheat. Excessive heat can damage the heater’s components and increase the risk of fire. To prevent overheating, ensure that the heater is placed in a well-ventilated area and free from any flammable materials.

Power Surge

Power surges are sudden increases in voltage that can occur during electrical storms or when large appliances are turned on or off. These surges can damage sensitive electronic devices, including space heaters. If a power surge occurs, it can cause the heater to malfunction or trip the circuit breaker.

Thermostat Malfunction

Space heaters typically have a built-in thermostat that regulates the temperature. If the thermostat malfunctions, it may cause the heater to overheat or operate continuously, leading to an overloaded circuit and tripped breaker.

The Final Word: Troubleshooting and Prevention

Understanding the reasons why space heaters trip circuit breakers is the first step towards preventing it from happening again. By addressing the underlying issues, such as overloading the circuit, checking for faulty wiring, and ensuring proper ventilation, you can safely and efficiently enjoy the warmth of your space heater.

Questions We Hear a Lot

Q: What should I do if my space heater trips the circuit breaker repeatedly?

A: If your space heater repeatedly trips the circuit breaker, it’s crucial to identify the underlying cause. Check for overloaded circuits, faulty wiring, undersized circuit breakers, overheating, and malfunctioning thermostats. If you cannot identify the issue, consult a qualified electrician for assistance.

Q: Can I use a higher amperage circuit breaker to prevent tripping?

A: Using a higher amperage circuit breaker is not recommended. Circuit breakers are designed to protect the circuit from overcurrents. Using a higher amperage breaker can allow more current to flow, potentially leading to dangerous overheating and fire hazards.

Q: How can I prevent my space heater from overheating?

A: Ensure that your space heater is placed in a well-ventilated area and free from any flammable materials. Avoid covering the heater or blocking its vents. Regularly clean the heater to remove dust and debris that can accumulate and cause overheating.

Rob Sanders

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er, Rob takes pride in testing out the latest tools and gadgets to see how they can make home projects easier. When it comes to heating systems, he's evaluated over 50 different furnace and boiler models over the years. Rob founded Nurturing Homeaid with his business partner Jim in 2020 to provide homeowners with genuine product recommendations they can trust. In his free time, Rob enjoys remodeling old homes with his family and traveling to visit architectural landmarks across the country. He holds a bachelor's degree in Journalism from Syracuse University.
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