Fuse test multimeter

If you think a fuse in your car has blown, you should use a multimeter to check it before you replace it.

Glass fuses have a low breaking capacity. It's easy to see when they're blown: the glass will be discolored and the filament broken. Replace yours today! Ceramic fuses are high or low breaking capacity and can be used in many applications. Ceramic color can vary from a very light beige to dark gray. Add content to this section using the sidebar.

Fuse test multimeter

Last Updated: September 7, Fact Checked. This article was co-authored by Ricardo Mitchell. Ricardo has over 10 years of electrical and construction experience and his partners have over 30 years of relevant experience. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 1,, times. Sometimes these fuses require testing to check that they are still in good working order. Testing fuses can be done using a multimeter, and doing so is both fast and easy to learn. Before you test a fuse with a multimeter, turn off the equipment and remove the fuse by pulling it straight out of its slot. Turn the meter to ohms, then touch the positive and negative leads together and check the reading. Next, put one lead on each end of the fuse and check the reading. If the reading is close to the one you got when you touched the positive and negative leads, the fuse is fine. Did this summary help you? Yes No. Skip to Content.

They'll be able to help you out and make sure that everything is done properly. Your multimeter should read very close to 0.

Same day shipment. Product experts available. Customers rate us: 4. A fuse is an electrical device that breaks a circuit under conditions of short circuits or current surges. The fuse contains a metal filament that burns when the fuse blows during a current overload.

We will get into the detail on how we will test the fuses shortly. But, before we get into that please read the table of contents below. However it is worth noting and understanding the different kinds of fuses, how they work and what typically cause them to fail. This understanding will help you in keeping your fuses healthy, and better equip you to test them effectively with a multimeter to diagnose any faults. There are so many different types, so I will touch on the most popular you will come across when testing with a multimeter. These types of fuses are typical in standard electrical circuit fuse boards.

Fuse test multimeter

Electrical circuits are peculiar in the sense that its the smallest components within them that play the biggest roles. The fuse is one of these small components, serving as a self-sacrifice that prevents unexpected power surges from rendering the entire circuit useless. Is a device within your home or car not receiving power? Do you suspect that the problem is from the fuse box? Fuses are simple components designed to protect electrical circuits from power surges or overloads. The current a fuse may hold is known as its ampere rating, which goes from as low as 10A up to A. The most common type of fuse found in various electrical devices is the cartridge fuse, which is cylindrically shaped, usually transparent, and comes with two metal tabs at both ends. The metal string is located inside it, connects these two tabs, and burns out from excess current to prevent electrical flow between them. Set the multimeter to the Ohm range to measure resistance, place the negative and positive multimeter probes on each end of the fuse, and wait for a reading of zero 0 or a value close to zero, which means it is good. The first step is to take the fuse out of the electrical circuit it is in.

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Sign Up. Put one lead on each end of the fuse and look at the display. Luckily, replacing a fuse is a relatively easy process. Last Updated: September 7, Fact Checked. By using this site, you agree to its use of cookies. However, some fuses will create that blackened stain after only slightly overheating, and that may have even been the result of an unnoticed incident weeks or months earlier. Remove the blown fuse. Reader Success Stories. You should see a diagram that shows you which fuse goes where. How to. Simply set your multimeter to the correct settings, place the probes on the correct terminals, and observe the reading. We're glad this was helpful. The size of the fuse also affects how much current can flow through it before it blows.

Last Updated: September 7, Fact Checked. This article was co-authored by Ricardo Mitchell. Ricardo has over 10 years of electrical and construction experience and his partners have over 30 years of relevant experience.

To remove the fuse , simply pull it straight out of the slot. Previously, most vehicles also contained small glass cartridge fuses. Replace the fuse if it is bad. How to. Support wikiHow Yes No. If the reading is close to the one you got when you touched the positive and negative leads, the fuse is fine. Touch one tip to the top metal and one tip to the metal threaded sidings. It is easier to test fuses than it is to test other electrical equipment. Another way to tell if a fuse is bad is to use a multimeter to test it for continuity. Household installations these days shouldn't really be protected by just fuses. If the translucent area is blackened, it is usually because the fuse has burned out. Remove the fuse from the fuse box. Listen for the multimeter to beep continuously as you hold the probes against the fuse. We like testing our fuses with a multimeter.