How to Wire a Fuse Box How to Wire a Fuse Box

What You'll Need
New Fuse Box
New Fuses
Electrical Tools with Grounded Sheathing
Voltage Meter

The fuse box in your home is there for protection against power surges and potentially life threatening fires. When there is an overload in the system, caused by a short or some other electrical power surge, the fuse will blow instead of letting the power flow continue on to an electrical device. When the fuse blows it shuts down the power to that section. Installing a fuse box is something that should be done only if you are comfortable around electricity and wiring. 

Step 1: Determine Amperage Load

Before you can buy a new fuse box you will need to determine the actual amperage load is needed for your home. Work with an electrician, or a city utilities worker to figure this out. It is important to know this number as there are different levels of fuse box that you can purchase.

Once you know the amount of load your home is under, then add extra for future additions. You may also be able to find the amperage level on the inside of the current fuse box if it is not too old. 

Step 2: Purchase Correct Fuse Box

Knowing your current, and future, amperage load will help you choose the correct fuse box. Choose the correct box based on need rather than cost. 

Step 3: Disconnect Power From Main Meter

To get started with wiring a new fuse box you want to make sure that the power is first disconnected. Disconnect the power from the main power meter so there will be no cause of any surprises. Check all the rooms to make sure that the power is definitely off.

Step 4: Remove Fuses

Remove all of the fuses in the current box. This will not only make the box lighter when you remove it, but will also ensure that you do not have any problems with broken fuses if you drop it.

Step 5: Disconnect Wires

You will find that after you remove the fuses you will see that there are several wires that connect to each one of the terminals. Use a screwdriver and loosen the retaining screw of each one. Remove each wire and mark them so you will know where to install on new box. Use some tape and wrap it around a wire. Write the section of the home with a marker on it for ease of reading.

Step 6: Remove Fuse Box

Use a screwdriver and remove the fuse box from its location on the wall. Make sure that there isn't any moisture behind it, or any other type of debris. 

Step 7: Install and Wire New Fuse Box

Set the new fuse box in the location and attach it to the wall. Use the same wires that you removed from the old box to connect to their individual terminals. Read each label, and carefully wrap the exposed wire on the retaining screw. Tighten the screw and be careful not to fray the wires or break any of the ends. 

Step 8: Install New Fuses

To complete the wiring of your fuse box, install the new fuses and connect the main power. 

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