How to Change a Fuse Box to a Breaker Box? – Step-by-step Guide


Written by

Thomas Carter



Marcos E. Williamson

how to change a fuse box to a breaker box

When it comes to electrical systems in your home, safety is always a top priority. If you have an old fuse box, you may want to upgrade to a modern breaker box.

In this blog post on how to change a fuse box to a breaker box, we will guide you through the steps and provide other relevant information for a smooth transition.

Replace Fuse Box With Breaker Box: a Step-by-step Guide


What to prepare

Before starting the replacement process, it is important to gather the necessary tools and equipment. This includes a new breaker box and breakers, wire strippers, and a screwdriver.

Safety precautions & their importance

You must also shut off the power to the house or building. This can be done by turning off the main fuse in the old electrical fuse box. Also, do not forget to wear protective gear such as gloves and safety glasses.

When it comes to changing a fuse box, safety should always be the top priority. Not only can working with electricity put you at serious risk of injury or electrocution, but improper handling of electrical wires can also cause damage to your property or result in a lethal fire.

Part 1: Removing the old fuse box

Step 1: Disconnecting the Power Supply to the Fuse Box


Once the power has been shut off, the power supply to the old fuse box must be disconnected. This can be done by removing the wires at the meter connected to it.

Step 2: Removing the Fuses


Next, detach the cover of the fuse box installation to access the fuses. Disconnect all the fuses in the box, starting with the main one.

Step 3: Removing the Old Wires


Now, inside the fuse panel wiring, all the wires must be disconnected. You can do this by using wire strippers and cutting the wires.

Step 4: Removing the Old Fuse Box


Unscrew the electrical box from the wall. Make sure there are no wire clamps or conduit connections left in the main fuse boxes.

Part 2: Installing the new breaker box

Step 1: Choose the Right Location for the New Breaker Box


When choosing a location for the new breaker box, it is essential to pick a dry, easily accessible area that is close to the meter base. The box should be located at a height that is easily reachable and should be secured in place.

Step 2: Mount the New Breaker Box


Once the location has been chosen, the new breaker box can be mounted to the wall with screws and mounting brackets. Make sure the box is level and securely attached to the wall. You can drill new holes if necessary.

Step 3: Connect the New Wires


Finally, the new wires can be connected to the new breaker box. This can be done by stripping the insulation from the wires and connecting them to the appropriate breaker.

It is crucial to double-check your work to ensure that installed wires are run correctly in modern fuse box.

Make sure the main neutral, ground, and hot wires are in their appropriate locations (the ground and neutral wire to one bus bar each and the black wires attached to the main connectors in the panel).

You do not want to leave any loose connections as this can cause electrical fires.

Once the new wires are connected, the power can be turned back on and the new breaker box can be tested.

Part 3: Testing the new breaker box

Step 1: Turning on the Power


Make sure that all the breakers are in the “OFF” position. Then, turn on the main breaker and wait for a few seconds. Next, turn on each circuit breaker, one after another.

Step 2: Testing the Breakers


To test the breakers, turn each one on and off a few times. This will help you to identify any breakers that might be faulty or not working correctly. If you find a faulty breaker, replace it immediately.

Fuse Box vs. Breaker Box


What is a Fuse Box?

A fuse box is an electrical system that uses fuses to protect circuits in a home or building. It is common in older residences and buildings.

What is a Breaker Box?

A breaker box is an electrical distribution system that uses circuit breakers to protect circuits in a home or building. Breaker boxes are commonly used in modern homes and buildings as they are more efficient and easier to maintain than fuse boxes.

Advantages of a breaker box over a fuse box

Breaker boxes provide a number of benefits over fuse boxes.

  • Breakers can be reset and reused, while fuses must be replaced.
  • Breakers can provide ground fault protection, which fuses are unable to offer.
  • Plus, breaker boxes are more reliable than fuse boxes as old style fuse box circuit breakers are more likely to overheat and cause fires.

Signs that you need to upgrade to a breaker box

If you are experiencing frequent blown fuses, flickering lights, or overheating appliances, it may be time to replace fusebox with a breaker box.

Also, if you are planning on adding new electrical circuits or high-demand appliances, a breaker box may be necessary to handle the added load (for example, switching from a 30 amp or 60 amp fuse box to 100 amp breaker box).

Reasons a fuse would blow

Some of the electrical faults that cause a fuse to blow are: overloads, short circuit, and damaged wiring or outlets. Fuses may also blow if they are not rated for the appliance you use or are too old to remain functional.

Diy Vs. Hiring a Professional: Which is Better When Going From a Fuse to Breaker Box?

1. DIY


DIY conversion from a fuse box to a breaker box is a viable option for those who are handy with tools and have some electrical knowledge.

You can purchase a breaker box and wiring for a reasonable price. The cost of materials for a DIY conversion depends on the size of your home and the type of breaker box you choose, but one can expect to spend up to 2,000 dollars for the panel and wiring for a conversion kit.

2. Hiring a professional


Hiring a professional electrician to convert your fuse box to a breaker box is the recommended option. A licensed electrician has the experience and expertise to install the breaker box correctly, ensuring that your home is up to code and that the electrical system is safe and efficient.

Hiring a professional electrician can be more costly though, requiring about $1,000 to $4,500.

3. Pros & cons of each

DIY conversion may seem like a cost-effective option, but it can be dangerous if you do not have the necessary knowledge and expertise.

On the other hand, hiring a professional electrician may be more expensive, but it guarantees that your electrical system is up to code and that your home is safe.

Tips & Considerations


1. Choosing the right breaker box for your home

There are a variety of breaker boxes to choose from, including main and sub-panel breaker boxes.

Main breaker boxes are designed to handle the main power supply to a home, while sub-panel boxes are used as an addition to the main breaker box for more circuits.

When choosing a panel, consider the size of your home, the electrical load, and the number of circuits you will need.

It is important to choose a breaker box with enough slots for the circuits you require, and to match the box size to the electrical load. Doing so is crucial to ensure safety and prevent electrical fires.

2. Thinking about adding circuits and outlets

Adding circuits and outlets may be necessary for high-demand appliances such as air conditioning units, electric stoves, and entertainment systems. It can also make your home safer by reducing the risk of overloading a circuit or using extension cords.

When planning for new circuits and outlets, it is important to consider the electrical load and the placement of the new outlets. Obtain the necessary permits and hire a licensed electrician to perform the work.

3. Thinking about the cost

The cost of switching to a breaker box can vary depending on several factors, such as the size of your home, the number of circuits needed, and the type of breaker box you choose. Additional costs may include permits, labor, and materials.

To minimize expenses, consider getting quotes from multiple electricians to compare prices. Additionally, you can save money by choosing a panel with more spaces than you need now to allow for future expansion.

Frequently Asked Questions


Can I replace a fuse box with a breaker box myself?

Unless you can acquire the necessary permit and feel confident an inspector will find your work adequate, it is recommended that you hire a professional electrician to ensure that the job is done safely and correctly.

If you are not experienced in electrical wiring, you could put yourself and your home at risk if you attempt the project yourself.

How do I know if my electrical panel needs to be upgraded?

If you are not sure whether your electrical panel needs an upgrade, there are some telltale signs to look out for:

  • You have been experiencing frequent power surges or circuit breaker trips.
  • Your panel is old and outdated.
  • There are strange smells emanating from your electrical devices or sockets.

How long does it take to replace a fuse box with a breaker box?

Replacing a fuse box with a breaker box usually takes around 4-8 hours. However, the exact time it takes to complete the replacement can vary depending on the size and complexity of the project.

Factors such as the number of circuits that need rewiring, the accessibility of the installation site, and any unforeseen electrical issues can all affect the duration of the replacement.


While a fuse box might have been sufficient years ago, modern homes have a much greater demand for electricity due to a wider variety of appliances and electronics.

Upgrading your electrical system can provide a more reliable and safer source of electricity for your home. Using the steps and tips in this blog post on how to change a fuse box to a breaker box, you can complete the task with ease!

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