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

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. It is necessary to test a fuse to confirm it is in good condition and can protect an electric circuit or device from catching fire. 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. A fuse is an electrical component designed to protect power lines, cables, and equipment from excessive temperature and power surges by safely opening a circuit when an abnormally high current flows through it. A fuse contains a metal element designed to carry only a limited electrical current. When an overload or short circuit occurs, the high current heats the fuse element creating a gap within the fuse, as seen in Figure 2 right. The gap breaks the current flow through the fuse and the entire circuit, preventing fire. It is necessary to replace a fuse once it has blown.

The fuse contains a metal filament that burns when the fuse blows during a current overload.

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.

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.

Fuse test multimeter

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.

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Related Articles. Make sure to get a fuse that is rated for the same amperage as the one that blew. Most of these fluses have small windows on top to visually inspect the internal wire. Article Summary X Before you test a fuse with a multimeter, turn off the equipment and remove the fuse by pulling it straight out of its slot. How to test a coil with a multimeter. 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. One way is to simply look at the fuse itself; if it appears to be burnt out or damaged in any way, then it is probably no longer working. Simply set your multimeter to the correct settings, place the probes on the correct terminals, and observe the reading. 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. Thanks a lot. We chose to move the dial to M. Thanks Helpful 4 Not Helpful 8. Great stuff, many thanks. Sign up for wikiHow's weekly email newsletter Subscribe You're all set!

Last Updated: September 7, Fact Checked.

Thank you for your feedback. Figure 3: Good automotive fuse with fuse wire intact. If the fuses are all still working, there is likely a more serious problem and it may be time to call on an expert. Conclusion: In conclusion, testing a fuse with a multimeter is a straightforward process. Multimeters measure AC and DC voltage, electrical resistance, and the flow of current. If the reading is close to the one you got when you touched the positive and negative leads, the fuse is fine. Same day shipment. Previous Next. More success stories Hide success stories. When testing resistance in a circuit, the meter will transmit a small quantity of electricity from its own battery and then measure the amount that passes through the circuit or object. Related Articles. Add your deal, information or promotional text. Replace yours today! If the wire is broken or the glass is black, the fuse is blown. Did this article help you?