by Liz Gonzales
It can be challenging to test a fuse if you don’t know how to do it. With so many electric and electronic items that need to be checked, it is crucial to understand how to use a multimeter. There will be no need to call an electrician for simple tasks such as a blown fuse. The article will show you the steps involved to test a fuse with a multimeter despite the fuse type.
When testing a fuse using a multimeter, you should check these things to detect a good fuse and blown one:
A fuse is a device that serves as a failsafe if an electric circuit overloads. Fuses are in almost all the home appliances and the breaker box. They protect machines and users from fire, overheating, and overloading, leading to severe and permanent damage.
They are divided by the current they are used with, i.e., AC and DC fuse. Some are used one time only, while others are reusable. They include:
These fuses are found underneath the driving wheel, near the stereo and window raising system of a vehicle. They are also known as High Rupturing Capacity Fuses (HRC). They can withstand high current at a time. If the current is not removed in time, the fuse blows out and protects the car from damage. The fuses are designed from metal, glass, and ceramics.
HRC fuse handles up to 32 voltage of direct current. You can easily spot the fuse because of its bright color. Because of their low reaction time and affordability, the fuses are excellent choices for many car manufacturers.
he fuse is made of glass or ceramics and is cylindrical. It withstands a specific amount of current before breaking down. It is fixed between two caps on each side, and it is space inside. When it overheats, the wire inside it melts, disconnecting currency from flowing to the other side hence breaking the circuit.
It is categorized into 2 types; time delay and general-purpose fuse. They are mostly found in stereos, TV, kitchen appliances, and a multimeter, among other devices.
These types of fuses are found inside the fuse boxes and handle very high currencies. The power fuses are made of durable material and come in various shapes and sizes. It tends in case thunder hits an electric pole in around home and currency reaches your house. It will protect you and your house from the currency.
A multimeter is a device that measures both DC and AC voltage and also power flow and electrical resistance. When testing a fuse, you can use an ohmmeter responsible for testing resistance and an ammeter to check the electricity flow.
However, a multimeter is a combination of ammeter and ohmmeter; hence can analyze resistance flow in the circuit and an appropriate amount of electricity to pass through the component.
Voltage: is the force provided by an energy source that allows current to flow. It is used interchangeably with “potential difference,” but they are different.
Amperage: is the electric current, and it is measured in amps or amperes and is mainly used by electricians.
What causes a Fuse to Blow:
As stated above, a fuse protects the circuit from a higher current than a circuit can handle. There are various causes that can lead a fuse to blow. They include
The first thing is to turn off running electricity in the house before testing if a fuse is in good or imperfect condition. Now remove the fuse carefully by pulling it straight.
Turn the multimeter on and set it on OHMS for resistance measurement before testing the fuse. Make sure you check out the negative and positive leads and check out the readings—the figure shown needs to be close to the one displayed after testing the fuse.
Next, place the lead on the fuse ends and look at the screen. You can place any lead either on the positive or negative side because the fuse has more than a distinct wire.
If you are running the multimeter for ohm’s measurement, the reading should correspond to the one displayed when you tested the leads. It will not show any reading on the multimeter for a fuse blown, depending on the multimeter type and brand.
When testing a fuse using a digital multimeter, you should set it for continuity measurement and check as it continuously beeps while holding the leads on the fuse ends. The fuse will not have an issue if it beeps continuously since the circuit is complete. But if it doesn’t beep continuously, your fuse has blown and needs to be replaced.
Before using a multimeter to test the fuse, ensure it is working properly before holding the two leads together. It is also essential to check the number of circuits being generated. In case the energy is too much, as displayed on the multimeter, you should use a resistor to lower the power output.
Of course, yes to test a fuse without removing it through continuity or voltage or checks.
It can be possible but under certain uncommon situations.
Knowing how to use a multimeter test a fuse, you be safer in your home. You will be able to test if the circuits are in good condition. From now henceforth, you need to be confident to use a multimeter while testing to tell whether or not your fuse is damaged or not.
Purchase a digital multimeter and enjoy testing the fuse with ease.
About Liz Gonzales
Liz lives in a suburb in New York city.
Both of her parents are the art professors at Sate University of New York.
As such, Liz grew up with all kinds of art objects, portraits, and books laying around the home.
Liz met up with Linea through another friend in some kind of online art forum. There great minds sparkled to take their passions onto the next level @ linea.io.