How to Change a Fuse

Jan 14, 2024


Welcome to, your go-to resource for all things related to lighting fixtures and equipment, as well as reliable electricians. In this article, we will guide you through the process of changing a fuse safely and efficiently. Whether you are a homeowner or a business owner, understanding how to replace a blown fuse is an essential skill that can save you time and money.

Why Change a Fuse Yourself?

While it is always recommended to hire a professional electrician for complex electrical tasks, changing a fuse is a relatively simple task that can be done by anyone with basic knowledge of electrical systems. By learning to do it yourself, you can quickly resolve minor electrical issues without the need to wait for a professional to arrive. This can be particularly beneficial during off-hours, emergencies, or when the problem is merely a blown fuse.

Step-by-Step Guide: How to Change a Fuse

  1. Gather the Necessary Tools

    Before you start, make sure you have the following items:

    • A small flashlight to provide adequate lighting in case the fuse box is located in a dark area.
    • A replacement fuse with the same amperage rating as the one you are replacing.
    • A pair of insulated gloves to protect yourself from electric shocks.
  2. Locate the Fuse Box

    The fuse box, also known as the consumer unit, is usually located in a convenient place, such as the basement, garage, or utility room. Once you have found it, ensure you have enough space to work safely.

  3. Switch off the Power

    Before touching anything inside the fuse box, it is crucial to turn off the power supply. Locate the main switch or circuit breaker and flip it to the "off" position.

  4. Identify the Problem Fuse

    Inspect the fuses to identify which one has blown. In most cases, a blown fuse can be identified by a darkened or broken filament within the fuse. This will indicate that the fuse has burned out.

  5. Remove the Blown Fuse

    Using a fuse puller or a pair of needle-nose pliers, gently grip the blown fuse and carefully pull it out of the socket. Be sure to grip the fuse body and avoid touching any metal parts.

  6. Insert the Replacement Fuse

    Take the new fuse, double-check that it has the same amperage rating as the blown one, and insert it into the empty socket. Ensure it is securely fitted and properly aligned.

  7. Restore Power

    Once the new fuse is in place, you can restore power by flipping the main switch or circuit breaker back to the "on" position. Test the affected electrical circuit to ensure it is functioning correctly.

When to Call a Professional Electrician

While changing a fuse is generally a straightforward task, there are situations where it is best to seek the assistance of a professional electrician:

  • If you are unsure about the cause of the blown fuse or suspect a more significant electrical issue.
  • If you are experiencing frequent fuse blowouts, as this may indicate an underlying electrical problem.
  • If you encounter any difficulties or uncertainties during the fuse replacement process.


Learning how to change a fuse is a valuable skill that can empower you to handle minor electrical issues efficiently. By following the step-by-step guide provided by, you can safely replace blown fuses and restore functionality to your electrical circuits. Remember, if you encounter any challenges or have concerns about your electrical system, do not hesitate to contact our professional electricians for assistance. Stay safe and enjoy the benefits of a well-maintained electrical system!