Many homeowners wonder, “Can I replace my 15-amp breaker with a 20-amp breaker?” The short answer: It’s possible, but it’s not advisable without professional evaluation.
Breakers are designed to prevent electrical overloads. Upgrading one without upgrading the wiring can create serious fire hazards.
This article will explain how circuit breakers work, why they trip, and what happens if you replace a 15-amp breaker with a 20-amp breaker. We will also discuss safe ways to upgrade your circuit if needed. Hiring a professional electrician is always the best choice.
Key Takeaways
- Circuit breakers prevent electrical overloads by shutting off power when a circuit draws too much current.
- A 15-amp breaker is designed for circuits with 14 AWG wire, while a 20-amp breaker requires 12 AWG wire.
- Replacing a 15-amp breaker with a 20-amp breaker without upgrading the wiring can lead to overheating, melted insulation, and fire hazards.
- Frequent breaker trips signal an underlying problem that must be addressed before considering an upgrade.
- A licensed electrician should evaluate and upgrade any electrical circuit to ensure safety and code compliance.
Understanding Your Circuit Breaker
A circuit breaker is a safety device. It stops electrical overloads by turning off power. This happens when a circuit uses too much current. This keeps wiring from overheating, which reduces the risk of electrical fires.
Common Residential Breakers:
- 15-Amp Breakers: Typically used for lighting circuits and general outlets.
- 20-Amp Breakers: Used for high-demand appliances like kitchen outlets, microwaves, and power tools.
Why Amp Ratings Matter
Breakers are designed to match the capacity of the wiring in a circuit. A 15-amp breaker pairs with 14 AWG wire, while a 20-amp breaker requires 12 AWG wire. If a breaker is too big for the wire, the wiring can overheat. This can happen without the breaker tripping, which creates a serious fire risk.
Upgrading a breaker without changing the wiring is like using a bigger fuse in your car. It may stop a warning light, but it doesn’t solve the problem. In fact, it can make things worse.
Why Your Breaker Keeps Tripping
If your 15-amp breaker keeps tripping, replacing it with a 20-amp breaker won’t fix the problem. The breaker is tripping for a reason, and ignoring it can lead to serious electrical damage or fire hazards.
Overloaded Circuit
Too many devices on one circuit can overload it. A single appliance using too much current can also cause this problem.
Short Circuit
If a hot wire (black) touches another hot wire or a neutral wire (white), it can cause an electrical surge. This surge can overheat the wiring and trip the breaker.
Old or Faulty Breaker
Breakers wear out over time. Sometimes they may trip randomly even if the circuit is fine. Thermal imaging can help detect defective breakers before they fail completely.
Should You Upgrade Your Breaker?
Sometimes, homeowners consider upgrading a breaker because they need more power. But before making any changes, the circuit wiring must be checked.
Increased Power Demands
Home offices, new appliances, or power-hungry devices may require a new circuit instead of just a breaker upgrade.
Frequent Tripping
If a breaker trips often, it might not be rated for the power demand. However, it could also mean there’s a wiring issue that needs to be fixed before considering an upgrade.
Code Compliance
Local electrical codes may require upgrades for safety. Some renovations or new installations must meet these codes to pass inspections.
Risks of Replacing a 15-Amp Breaker with a 20-Amp Breaker
Upgrading a breaker without upgrading the wiring can be extremely dangerous.
Overloading the Wiring
Most 15-amp circuits use 14 AWG wire, which isn’t rated for 20 amps. Allowing 20 amps to flow through wires not rated for it can cause overheating, melted insulation, and electrical fires.
Violation of Building Codes
Replacing a breaker without proper wiring violates local electrical codes. Unapproved modifications can result in fines or required corrections.
Voided Homeowner’s Insurance
If an electrical fire occurs due to an improper breaker upgrade, insurance may not cover damages. Homeowners could be financially responsible for repairs or legal liabilities.
Safety Hazards
Overloaded wiring increases the risk of electric shock and fire. Faulty electrical work can cause circuit failures or damage appliances.
How to Safely Upgrade a Circuit Breaker
If you truly need to upgrade from a 15-amp to a 20-amp breaker, follow these safety measures:
Evaluate the Circuit
Determine whether the existing wiring can handle 20 amps. Most cases require upgrading from 14 AWG to 12 AWG wire.
Verify Code Compliance
Check local building codes before upgrading. Obtain permits or approvals if required.
Consult a Professional Electrician
A licensed electrician can safely upgrade the breaker and rewire the circuit if needed. Attempting a DIY electrical upgrade without proper knowledge is dangerous.
Test the Circuit
After upgrading the breaker and wiring, the system must be tested for safety. A professional electrician will ensure the circuit can handle the load and meets code requirements.
Replacing Breakers Isn’t a DIY Job—Call a Pro
If your breaker keeps tripping, an electrician can diagnose the root cause. Upgrading an electrical panel or wiring should always be handled by a licensed professional. Hiring a pro ensure code compliance, prevents electrical hazards, and guarantees proper installation.
For homeowners and businesses in Houston, TX, and surrounding areas, Right Touch offers expert circuit breaker repair and installation. With quality and a master’s touch, our team ensures your electrical system is safe and reliable.
FAQs
Can I replace my 15-amp breaker with a 20-amp breaker?
Only if the wiring supports it. Most 15-amp circuits use 14 AWG wire, which isn’t rated for 20 amps. If you upgrade the breaker without upgrading the wiring, you create a fire hazard.
How do I know if my wiring can handle 20 amps?
Check the wire size. 14 AWG wire = 15 amps, 12 AWG wire = 20 amps. If your circuit has 14 AWG wire, you must upgrade the wiring before replacing the breaker.
Why does my 15-amp breaker keep tripping?
Common causes include overloaded circuits, short circuits, or a faulty breaker. Upgrading the breaker won’t fix these problems. The issue must be diagnosed first.
Do I need a permit to upgrade a breaker?
In most areas, yes. Electrical work must comply with local building codes, and permits may be required.
Final Thoughts
Upgrading a breaker without upgrading the wiring is dangerous. Higher power demands and frequent tripping may indicate a need for an upgrade, but the root cause must be diagnosed first.
Before upgrading:
- Check if the wiring is rated for 20 amps.
- Follow local electrical codes and obtain permits.
- Consult a professional electrician for a safe installation.
Bottom line: Never upgrade a breaker without proper wiring and safety measures in place.
