All of us have been forced to learn some electrical work throughout our lives, whether to fix a light switch or change a fuse. If you have never changed a blown fuse, it might be confusing to look at the fuse box since you don’t know what is on the board, how it functions and what happens if you remove it. Learn more about fuse boxes in this post about fixing a blown fuse.
What are the solutions for a blown fuse box?
The first thing you need to do when your power goes out is check out the fuse box to assess any possible damages. Some electrical accidents can burn a fuse board by overloading all circuits at once.
If you see all the fuses seem intact, and the main switch has popped out, you have blown a fuse; it’s time to find out which fuses have been damaged in the incident and replace them with a new one. Unlike circuit breakers, fuses cannot be used again after reaching their failsafe scenario since the thin wire inside the bulb is fried. That is how you can tell which fuse has been subjected to overload since the glass covering will probably be darkened by tar.
The damage you see in the fuse could have meant much worse if it wasn’t contained in the fuse board. In essence, fuse boards are made to prevent the overload from happening indoor and include damage to your home’s electrical circuitry.
If you have a circuit board instead of a switchboard, dealing with an overload is as simple as switching a light on. But with fuses, you need to change the fuse physically to allow the current through the board. The replacement fuse can’t be any other size and model other than the previously blown one, or else you might have issues with the overall amperage of your fuse board.
How can I upgrade my fuse box?
It’s very dangerous to meddle with a fuse box if you don’t know what you’re doing in there. Any attempt at wiring a fuse box must be performed by a registered and experienced electrician, who can calculate the overall amperage of the board and make sure it fits the consumption demands of your house.
How do I know if I have to change my fuse box?
If your house’s electrical circuits have not been altered for the past decade, you are probably still using an outdated fuse box instead of a consumer unit. Fuse boxes are more prone to electrical incidents, are very difficult to maintain and upgrade, and have more limitations than consumer units with circuit breakers and different circuits. Wiring a fuse board is an exponentially more difficult task than adding new circuits to a consumer unit.
How do I change the old fuse with a new one?
- Before you can change an old fuse, switch off the main power
If you have turned the power again after the fuse blew, you have made a mistake. Before touching the board or fuses any further, turn off the main power switch. If possible, unplug major electrical devices from their outlets as well.
- Locate the damaged fuse or fuses
Using a flashlight, examine all the fuses on the board. Knowing which fuses correspond to different parts of your home makes this process significantly easier. If there are fix more than one blown fuse, you may have a more severe problem in your electrical network that a simple fuse change cannot.
- Find a similar fuse with the same amperage
This is an important step, as mistakes in the amperage can disrupt the function of your fuse. If the fuse has a lower resistance than the one, it is replaced; the chances are overload is significant. Fuses are designed to fit a particular circuit, and changing the fuse without rewiring the fuse board won’t work.
- Carefully screw in the new fuse
Make sure you screw in the fuse and twist it in the right direction. The fuse will connect the two power terminals, and once it is installed, you can turn the main power on again. It’s time to close the fuse box lid.
Eventually, you will have to replace your old fuse box with a new consumer unit, as regulations and requirements in electrical safety checks are updated. If you return the unit now, the prices may be significantly lower. With the introduction of new mandates, the demand for new consumer units will surely increase. Which leads to a hike in prices and the related services.
Safety reminders for fuse box maintenance
Chances of electrocution when handling electrical repairs are always there, but the voltage may significantly increase with fuse boxes and cause deadly accidents.
- Install RCD or residual current devices to ensure the safety of the fuse box itself
- Do not meddle with loose wires in the box. Call an electrician if the fuse box is too complex.
- Any electrical sparks or fires in the fuse box mean it is out of your expertise to handle it and need professional care.
Wiring a fuse board is a more complex task than a standard fuse change, and it requires extensive electrical expertise and tools that are usually unfamiliar for homeowners.