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How To Fix a Blown Fuse - Easy & Effective Steps

Updated: Dec 3, 2023

A blown fuse is not something to sweat over. It's just a cue for a quick fix-it session. Knowing your way around the fuse box is smart. Before trouble strikes, get to know what fuses your house uses.

This know-how is your ticket to tackling that pesky fuse issue solo, with confidence and safety.


Keep it straightforward: study your home's electrical heart, stock up on the right fuse types, and you are set to switch that fuse without a hitch.

What Does a Fuse Do

Fuses are like the safety guards of your apartment's electrical system.

They shut off power if there is trouble. When too much electricity tries to go through, like when a bunch of appliances are on at once, the fuse heats up and "blows" to stop the flow and prevent danger—that is called an electrical overload.

If an appliance has something wrong inside, like a loose wire, it can also blow a fuse. That's because it messes with the electrical balance. And there is a thing called a short circuit.

It is serious and can happen if wires that are not supposed to touch each other do. This can be a fire risk, so if fuses keep blowing, it is important to check your appliances or get an electrician to help out.

How to Fix a Blown Fuse - Step by Step

1. Unplug Electrical Appliances

When you are in the dark because of a power cut, figure out which rooms are without light—test by flipping switches. Turn off lights and unplug gadgets in those spots. Why? So when power's back, you avoid another fuse blowout. Simple steps keep the lights on and your home safe.

2. Turn The Power Off

Before you start fiddling with the fuse box, the big switch in your electrical panel needs to go off. Safety first, right? Cutting power here stops electricity from dancing through those wires while you work.

3. Find The Fuse Box

When you need to replace a fuse, knowing where your fuse box is becomes key. In homes built before 1965, that is where you will find them.

For newer or updated homes, look for a circuit breaker box instead. Both types are normally located in places like the garage, the basement, or a utility area. They are essential for managing your home's electricity safely.

4. Identify the Broken Fuse

To determine which fuse is blown, look for a fuse showing damage. Fuses have wires that melt to break the circuit if the current gets too high, preventing fires. The damaged fuse might have a melted wire or a discolored glass cover. This is the one you need to replace to fix the circuit.

5. Replace the Fuse

If you need to change a fuse, ensure the new one has the same number of amps as the old one. Just bring the old fuse to the store to find a matching one. To install it, unscrew the old fuse and screw in the new one.

6. Test Your New Setup

After you have checked your fuse box and everything looks okay:

  1. Switch the main power on.

  2. Watch to see that everything is working fine.

  3. Slowly start connecting your necessary devices, being careful not to put too much on the circuit that just gave you trouble. If that same fuse cuts out again, it's probably a good idea to call in an electrician.

Do Fuse Boxes Need to Be Replaced

Do you have an old fuse box at home? It is likely aged over half a century! With time, these fuses can wear out.

They might even hike the risk of fires or damage to your gadgets and wires. To nip these hazards in the bud, consider switching to a modern circuit breaker panel.

This move can make your home safer since breaker boxes are more reliable when a fuse is blown, making it easier to reset the system and restore power.

Signs Your Fuse Has Blown Out

To check if a fuse is blown in your house, you will need to look at it closely. Find the fuse—it is shaped like a little tube with a see-through part in the center.

Inside this part, there should be a thin wire that is unbroken. If the wire is split, or if the glass looks dark, like it has been burned, the fuse has blown.

This means it has stopped the electricity because something went wrong.

And if there is a burnt smell near your fuse box, it is a sure sign you need to call an emergency electrician for your home to fix it.

How Do You Prevent Fuses from Blowing Again

Overloaded Circuit

A circuit gets overloaded when too many gadgets suck up power at once. To fix it, spread your appliances around the house to different plugs.

If that does not cut it, you might need a new breaker box. To soften the hit to your wallet, check out government discounts for making your home more energy-smart.

Short Circuit

When electricity in your house goes the wrong way, it is like a river overflowing. This is called a short circuit. It can mean a problem with the wires, like a burnt fuse.

It is severe, and you need someone who knows about electricity, a certified electrician, to take a look and fix it safely.

Faulty Appliance

When a household device starts acting up, it might suck up more power than usual. This can cause a fuse to blow as a safety move, stopping too much heat and averting possible fires.

Fixing or swapping out the faulty machine is the way to solve this electrical hiccup.


Can you fix a fuse yourself?

Yes, if you are handy and follow safety protocols, you can replace a blown fuse yourself. It is crucial to switch off the main power first.

Can fuses be repaired?

Fuses are designed as one-time protection, so they cannot be repaired. Once they blow, they must be replaced.

How do you know if you blew a fuse?

You will know you blew a fuse if your appliances or lights in one area stop working. Checking your fuse box for a discolored or cloudy fuse will confirm it.

Is it safe to touch a fuse?

It is safe to touch a fuse if the main power supply is turned off, but always exercise caution and use a fuse puller or insulated gloves for extra safety.


Fixing a blown fuse is a straightforward task that can restore power and keep you safe. Always turn off the main power supply before you start, and handle fuses carefully.

With a new fuse, you can light up your space again without hassle.

Have you ever tackled a fuse replacement at home? Share your experience with us!

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