How to Change a Fuse in a Fuse Box

Dec 19, 2023

Welcome to, where we specialize in providing high-quality lighting fixtures and equipment. Not only are we a leading supplier in the industry, but we also have a team of expert electricians who are here to share their knowledge and help you with your electrical needs. In this article, we will guide you through the process of safely changing a fuse in a fuse box, ensuring that you can do it confidently and without any hassle.

Understanding the Importance of a Functional Fuse Box

Before we dive into the steps for changing a fuse, it is essential to understand why having a functional fuse box is crucial for any residential or commercial property. A fuse box, also known as a consumer unit, is responsible for protecting your building's electrical circuits from overloading, which can lead to electrical fires and other hazards. Fuses act as the first line of defense, interrupting the electrical circuit when a fault occurs, preventing further damage or accidents.

Gathering the Necessary Tools and Equipment

To start the fuse changing process, you will need a few tools and equipment readily available. These include:

  • Safety goggles
  • Rubber gloves
  • Flashlight
  • Fuse puller (if provided, otherwise use long-nose pliers)
  • Replacement fuses

Step-by-Step Guide for Changing a Fuse

Follow these steps to safely change a fuse in your fuse box:

Step 1: Safety First

Before touching the fuse box, ensure that you are wearing safety goggles and rubber gloves. These will protect you from accidental electrical shocks.

Step 2: Locate the Fuse Box

Identify the location of your fuse box in your property. This is usually in a well-ventilated area, such as a utility room or basement.

Step 3: Find the Faulty Fuse

Inspect the fuses in the fuse box. A faulty fuse can be identified by inspecting its filament, which will be broken or burnt out. Additionally, the transparent part of the fuse might appear discolored.

Step 4: Turn Off Power Supply

Before replacing a fuse, you must turn off the power supply to the specific circuit associated with the faulty fuse. This will prevent any potential electrical accidents.

Step 5: Remove the Faulty Fuse

Using a fuse puller or long-nose pliers, gently grip the faulty fuse and pull it straight out. Be careful not to touch any other parts of the fuse box while doing this.

Step 6: Insert the Replacement Fuse

Take the replacement fuse of the same amperage rating and carefully insert it into the vacant slot left by the faulty fuse. Ensure it is secure and properly aligned.

Step 7: Power On

With the replacement fuse in place, turn the power supply for that specific circuit back on. Test the electrical appliance or circuit to confirm that the issue has been resolved.

Tips and Considerations for Fuse Replacement

To ensure a successful fuse replacement, here are a few additional tips and considerations:

  • Always use a replacement fuse with the same amperage as the faulty one. Using a higher or lower amperage fuse can create electrical hazards.
  • If you are unsure of the appropriate replacement fuse, consult a qualified electrician.
  • If the fuse blows repeatedly or if you notice any other electrical issues, it is recommended to contact a certified electrician to inspect and fix the problem.


Changing a fuse in a fuse box is a relatively simple task if done correctly and safely. We hope this guide from has provided you with the necessary knowledge and steps to undertake the fuse replacement process confidently. Remember to always prioritize safety while working with electricity, and don't hesitate to seek professional assistance if needed. Browse our wide range of lighting fixtures and equipment at to enhance your property's aesthetics and functionality.

how to change a fuse in a fuse box