Quick & Easy Breaker Replacement: A DIY Guide

Updated at: 15/05/2025

Tripped breakers can be incredibly frustrating, leaving you in the dark – literally! But before you call an expensive electrician, consider tackling the problem yourself. Replacing a circuit breaker is often a straightforward task, even for novice DIYers, saving you time and money. This simple guide will empower you to safely and efficiently handle minor electrical issues, preventing inconvenient power outages and empowering you to take control of your home’s electrical system. Remember, safety is paramount; if you're ever unsure about any step, it’s always best to consult a qualified professional.

This guide focuses on common types of circuit breakers found in most homes, providing clear, concise instructions and accompanying visuals. We'll walk you through each step of the process, from safely turning off the power to properly installing the new breaker and testing the circuit. Ready to conquer that tripped breaker and restore power to your home? Let's dive into the step-by-step process outlined below.

Preparation and Safety Guidelines

Tools Needed
  • Manual Screwdriver
  • Non-contact voltage tester
Safety Guidelines
  • Always turn off the power to the circuit at the main breaker box BEFORE attempting any work. Failure to do so could result in serious injury or death.
  • If you are uncomfortable or unsure about any step of the process, consult a qualified electrician. Electrical work can be dangerous.
  • Match the new breaker to the amperage and type of the old breaker. Using an incorrect breaker can cause damage to your electrical system or fire.

Step-by-Step Instructions

  1. Power Down and Safety Check

    • Cut power to the breaker panel by flipping the main breaker off.
    • Safely remove the panel cover using a manual screwdriver.
    • Verify power is off using a non-contact voltage tester in the breaker area.
    Verify power is off using a non-contact voltage tester in the breaker area.Verify power is off using a non-contact voltage tester in the breaker area.
    Power Down and Safety Check

  2. Remove Faulty Breaker

    • Unscrew the screw inside the faulty breaker to release the hot wire(s).
    • Carefully remove the hot wire(s) from the breaker. Note the position of each wire.
    • If dealing with an AFCI or GFCI breaker, remove the white wire and the curly wire from the neutral bus bar.
    • Release the breaker by pulling it forward. There's a clip holding it to the bar.
    Release the breaker by pulling it forward. There's a clip holding it to the bar.Release the breaker by pulling it forward. There's a clip holding it to the bar.Release the breaker by pulling it forward. There's a clip holding it to the bar.Release the breaker by pulling it forward. There's a clip holding it to the bar.
    Remove Faulty Breaker
    • Remove the breaker.
    Remove the breaker.
    Remove Faulty Breaker

  3. Install New Breaker

    • Choose the correct replacement breaker matching amperage rating (15 or 20 amps) and brand compatibility.
    • Install the new breaker by clipping it in place and pushing it back.
    • Reattach the wires to the new breaker, ensuring they are securely under the screw terminals.
    • Screw the breaker back in place.
    Screw the breaker back in place.Screw the breaker back in place.Screw the breaker back in place.Screw the breaker back in place.
    Install New Breaker

  4. Restore Power

    • Replace the panel cover.
    • Flip the main breaker back on.
    Flip the main breaker back on.Flip the main breaker back on.
    Restore Power

Read more: Installing an Outdoor GFCI Receptacle: A Step-by-Step Guide

Tips

  • If uncomfortable, contact a licensed electrician.
  • Use a manual screwdriver to avoid over-tightening screws.
  • Avoid touching live wires above the main breaker.
  • Keep track of wire positions for accurate reinstallation.
  • Don't attempt to remove the curly white wire from the breaker itself.

Common Mistakes to Avoid

1. Incorrect Breaker Size

Reason: Using a breaker with an amperage rating too low for the circuit's load can lead to overheating and potential fire hazards. Using one too high can be a safety risk and may not trip when needed.
Solution: Always match the breaker's amperage rating to the circuit's amperage requirements as specified on the electrical panel and the devices it serves.

2. Ignoring Electrical Safety Precautions

Reason: Failing to turn off the main power, not using proper PPE (Personal Protective Equipment), or neglecting to test for voltage before and after replacement increases the risk of electric shock.
Solution: Always turn off the main power before working on any electrical component, use insulated tools and protective eyewear, and verify the power is off with a non-contact voltage tester.

FAQs

What type of circuit breaker should I buy to replace my old one?
Buy an exact replacement. Look for the amperage rating (e.g., 15A, 20A) and any other markings (brand, model number) on your old breaker. Using a different amperage could be dangerous.
What if I accidentally shock myself while replacing the breaker?
Always turn off the power at the main breaker box BEFORE beginning any work. If you still receive a shock, immediately stop and call a qualified electrician. You may have a more serious electrical issue.