Test fuse with multimeter

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More results A simple fuse test is one of the easiest ways to troubleshoot equipment. You can do it at home, and all it requires is a multimeter—sometimes not even that. Essentially a safety device, fuses protect against overcurrent caused by a fault, overloaded circuit, damaged wiring, loose screws, etc. The wire within the fuse will melt and break the circuit, turning off power to the device.

Test fuse with 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.

An automotive fuse is a special fuse type used in vehicles. Regarding car fuses, test fuse with multimeter, most cars use a colored 'blade' type fuse, and looking at the top of the fuse in situ in the fuse box will show that the metal strip that runs test fuse with multimeter the visible top of the fuse will either be intact fuse good or broken fuse blown. A good fuse has a connector that connects from one end of the fuse to another, as seen in Figure 2 left and Figure 3.

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.

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. There are primarily two types that are used. What is interesting about these types of fuses is that they are correlated with a specific type of socket. The rejection base type fuse The Type S can only work with a socket of the similar current rating as the fuse. So for example, if you use a 20A Type S fuse, you will only be able to connect it with a 20A socket.

Test fuse with multimeter

To test a fuse with a multimeter, you need to set the meter to measure continuity or resistance. Then, touch the probes of the multimeter to the two ends of the fuse and check the reading on the meter. If the fuse is intact, the multimeter will show a low resistance or beep to indicate continuity. If the fuse is blown, the multimeter shows high resistance or no continuity.

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Thanks Helpful 3 Not Helpful 2. Touch one tip to the top metal and one tip to the metal threaded sidings. Fuses are really just wires that are designed not to last, but their purpose is to prevent damage to more valuable electrical equipment or prevent fires especially in homes caused by power surges. Ceramic color can vary from a very light beige to dark gray. If the translucent area is blackened, it is usually because the fuse has burned out. Your multimeter should read very close to 0. By continuing to use our site, you agree to our cookie policy. More success stories Hide success stories. They are made clear so that you can see if the wire remains intact. Contact us with questions! Ceramic fuses. Not Helpful 23 Helpful Make sure the device, equipment, or vehicle is turned off before the fuse is removed. In such cases, the best option is to check the fuse using a multimeter.

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How to. Learn why people trust wikiHow. Co-authors: In addition, most car parts can only be tested at repair shops, and to do so will usually cost quite a lot of money. Same day shipment. This article has been viewed 1,, times. Subscribe Keep up with sales, new products, and more! Figure 2: A good cartridge fuse with fuse wire intact left and a blown cartridge fuse right. Dawid Malan Mar 14, It's easy to see when they're blown: the glass will be discolored and the filament broken. Suspicious Contains spam, fake content or potential malware. Food Prep.