Test fuse with multimeter

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!

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. The good news is testing for a bad fuse is pretty straightforward.

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. Did this summary help you? Yes No. Skip to Content. Edit this Article.

The rating ensures that the current can pass through the wiring safely. Most of these fluses have small windows on top to visually inspect the internal wire.

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. There are primarily two types that are used.

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. A fuse is a safety component that prevents the circuit from overcurrent. It has a thin metal wire or strip made of a material with a low melting point, such as tin or copper.

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Thanks a lot. You will no longer be able to: See blocked member's posts Mention this member in posts Invite this member to groups Message this member Add this member as a connection Please note: This action will also remove this member from your connections and send a report to the site admin. Thanks Helpful 3 Not Helpful 2. Did this article help you? Filter by categories Clear Results Beverage. In the case of automotive fuses, touch the probes to the fuse leads exposed metal parts. Fuses are not polarized, so it doesn't matter which tip touches which end. Food Prep. We have a basic multimeter here. Co-authors: There are several varieties of fuses, but their differences are primarily in appearance. You are here:. Tips and Warnings. A blown fuse is shown in Figure 2 right.

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Your multimeter should read very close to 0. National Institutes of Health Go to source The blade fuse is a common type of automotive fuse that has come into use in the last years. Although it is easy to inspect glass fuses for continuity, most fuses are solid and cannot be inspected visually. Previous Next. This article explores how to check a fuse visually and also how to use a multimeter to determine if the fuse is fit for use in an electric circuit. Then put the probes on either side of the fuse and check if the reading is similar. Even with a new fuse, it is wise to check if the connecting wire within is free of damage. Submit a Tip All tip submissions are carefully reviewed before being published. When a fuse is broken, it reads the circuit is not complete, so it reads an open line. Eloy Pol Mar 24, Did this article help you? As pictured above, if the metal tips are separate, your multimeter should be reading 1.