A fuse box has a sole purpose of offering protection from power surges and fires. The fuse in the fuse box blows when there is an overage of power in the system caused by a power surge. This protects the electrical device receiving power from the fuse box because the fuse box stops the surge and doesn't allow it to reach the device. Electrical experience is recommended when wiring a fuse box.
Calculate the needed amperage load
The level of power needed determines how big of a fuse box is needed.
Purchase the fuse box
Based on the electrical need, purchase the appropriate sized fuse box from a local hardware store.
Disconnect power to the fuse box
Disconnect power to the fuse box from the main breaker to prevent any injuries while working.
Disconnect and mark the wires of the fuse box
Once the fuses are removed, remove the wires found underneath and mark each one individually for reference. There's a retaining screw on each fuse which can be removed with a screwdriver.
Remove the old fuse box
Using a screwdriver, remove the fuse box from the wall.
Install the new fuse box
Screw the new fuse box into place. Use the same wires from the old fuse box and connect them into place using the labels. Wrap the wires around the retaining screw and tighten into place.
Install new fuses and reconnect power
Place the new fuses into their proper place, and restore power to the fuse box.