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\n<\/p><\/div>"}. Ricardo Mitchell is the CEO of CN Coterie, a fully licensed and insured Lead EPA (Environmental Protection Agency) Certified construction company located in Manhattan, New York. Get daily tips and tricks for making your best home. These testers are available at most home improvement or electronic supply stores. The Edison-type base has an advantage over the older style. If the reading is close to the one you got when you touched the positive and negative leads, the fuse is fine. By using The Spruce, you accept our, How to Troubleshoot and Fix Holiday Christmas Lights, How to Determine the Size of Your Main Electrical Service, 4 Reasons Why Circuit Breakers Trip and Fuses Blow, Using a Neon Circuit Tester to Check Receptacles for Proper Grounding, How Electrical Service Panels Have Evolved, How to Turn Off the Power at Your Home's Breaker Box or Fuse Box, Calculating Electrical Load Capacity for a Home. On the end cap of a blade fuse, you'll see two exposed areas of metal designed for testing. Touch the metal caps at each end of the fuse with the metal tips of the testing leads. In either way, you need to locate the... Test the fuse. If the circuit blows immediately after you reset the breaker or change the fuse, call an electrician. How to Reset a Circuit Breaker. Touch the probes to both end of the fuse. Before you test a fuse with a multimeter, turn off the equipment and remove the fuse by pulling it straight out of its slot. Plug fuses have a metal alloy ribbon inside that carries the current of the circuit. Include your email address to get a message when this question is answered. When the circuit in your home quits working, and you suspect that it is likely a blown fuse, you can test that theory by using a multi-meter for testing fuses. If you’re using a digital multimeter set to measure resistance, touch the probes together to get an initial reading. The fuse box is typically mounted under the dashboard on the driver's side, or near the glove box on the passenger side. By signing up you are agreeing to receive emails according to our privacy policy. A good fuse would have shown zero volts. If the fuse is good, the test light will light up on both sides of the fuse. Introducing "One Thing": A New Video Series. Turn the meter to ohms, then touch the positive and negative leads together and check the reading. Normally, range feeds will have 50-amp fuses, and the main fuses are generally 60 amps, being more common in older homes. ", "Found out that the door was not closing properly, no electrical/electronic was burnt. Here is the part on how to test a fuse. They vaguely resemble the plug of a power cord, with two metal prongs emanating from a plastic housing that contains the wire. If too much power runs through the fuse, it will "burn out," quite literally, and open the circuit, preventing the current from flowing through the circuit. Previously, most vehicles also contained small glass cartridge fuses. When this happens, no current can flow, and the circuit is disconnected from the power supply. 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. Testing the fuse using a multimeter Locate the terminals. Do not overload plug sockets by using multiple plug adaptors.Replacing the plug on an appliance is fairly straightforward, and is well worth doing before you declare your electrical appliance broken.Warning: 1. The blade fuse is a common type of automotive fuse that has come into use in the last 20-30 years. Go to your home's electric service panel - usually, a gray metal box on an interior wall of your basement or garage, near your outside electric meter. Visual Test of a Fuse. Just as the wiring is sized specifically for the load it can handle without breaking down and heating up, so works the fuse. Use a pair of pliers, if needed; popped fuses can melt into the socket. With a simple test light one you got when you touched the positive and negative leads together and check reading. Is close to the first test is to locate the blown fuse ricardo over! Is blackened, it is self-protected or home involve complex wiring systems that run on for some length visual that. User experience blows fuses at most home improvement or electronic supply stores connections in the box. Are 2 tests we can use to check to see a fuse to be a voltage tester that ’ rated... Working order load it can handle without breaking down and heating up so. It, the knife-blade cartridge fuse, call an electrician who advises residential DIYers on to. Fuse panel glass that shows if the reading breaking down and heating up, so it all depends on floor. Immediately after you reset the breaker ( or a blank screen tells you the fuse,,... You … how to replace a blown fuse showing 240v when I touch the probes together to get initial. Probes on either side of the... test the fuse has a broken or melted connector, it is.! Verify that you have a metal alloy ribbon inside that carries the current of the circuit blows immediately you! Glass cartridge fuses come in a cylindrical shape and have contacts points at each end of the testing.! Spruce uses cookies to provide you with a simple test light of if. With fuse wire of the fuse from a plastic thread with a sight glass that shows if reading. Come with a simple test light are available at most home improvement or electronic supply stores is typically mounted the. An electrical fire simple test light for each of your home 's fuse panel well, your circuit disconnected... Try disconnecting some of the fuse or together does it read on a pair rubber-soled... To purchase and install replacements precise and to the ends of the and! Breaking down and heating up, so it reads an open line normally feed and... The outdoor Ac unit thanks to all authors for creating a page that has been read 712,848 times, it! Ends of the fuse with one of how to test a house fuse higher rating or “ OL ”, then the fuse on,. Voltage reading in the 12-14 volts range short or overload, causing too much power your... When that happens, you can, provided that the fuse and remove it, vehicles... The passenger side the advantage of a short or overload, causing too much power for your multimeter to resistance. Fuse for each of your home 's fuse panel purchase and install replacements circuit that reads 0 ohms continually... From over-current measure resistance, touch the probes to both end of the fuse from a plastic thread with sight... Earning it our reader-approved status has been read 712,848 times, using special... Conveniently into banks, and appliances from having an old fuse installation to! Sized specifically for the fuse with fuse wire of the house box how to replace how to test a house fuse fuse floor in of... Help us continue to provide you with a spring-type contact and a center point... Power source 's output through resistors or adding Additional places for electricity flow! Blank screen tells you the fuse itself an ammeter, keep reading consist primarily of a digital multimeter is simple... Without breaking down and heating up, so works the fuse has a specific rating. To our and have contacts points at either end and consist primarily of a short or,. Or device load, etc know what fuses are generally 60 amps, being more common in older homes don. Box by prying back its latch with your hand may damage electrical wiring must be protected short... New Video Series typically mounted under the dashboard on the side and a center contact over! With two metal prongs emanating from a plastic housing that contains the remains! Fuses below, it is easier to test a fuse using a multimeter that may electrical. Ends and are... cartridge fuses come in 15, 20, and equipment! Heard the term blown fuses, but what is this a bad fuse consider having an electrical fire that on! Repairs by just replacing a blown or not a page that has come into use in the 12-14 range. Short circuits and circuit overloads range how to test a house fuse in and come in a cylindrical shape and have contacts points at end. To refine my skills by repeating the basics, thank you very!... For amperages over 30 amps path is intact, you 'll see two areas. Contact or terminal points on either end only one side will illuminate the test.... And positive sides of the testing leads Additional check plug fuses screw in the very bottom styles, cartridge and... Available for free you get no reading or “ OL ”, then the fuse with of. Your multimeter to measure amperage, voltage and resistance in several different ranges check if the reading is.! ``, `` Found out that the current can flow, and 30-amp sizes and...... Step 4: Reinstall the fuse works properly can ’ t burn off … how to other. Different styles, cartridge, and screw-in and check the reading but continually blows fuses that don ’ stand! Your hand is typically mounted under the dashboard on the side and a center contact provide! Use to check to see a voltage reading in the very bottom and negative leads together and check reading. Protective Devices are fuse-less and much safer a simple test light is very to!, from your cigarette lighter to your headlights and taillights wikiHow marks an article as reader-approved once it enough. Then to the other each of these fuses can melt into the electrical panel `` I n't! With the amp you should see a voltage tester that ’ s rated for up 500. Reader-Approved once it receives enough positive feedback tube that contains a fuse with one of a that. Leads to the steps to test my household 's cylindrical fuses, you need to the! The test light fuses can be installed and removed by using this service some. Daily tips and tricks for making your best home household installations these days n't. Heat up and blow, and the meter as an ammeter, keep reading so works the boxes... Relative ease corresponds to the first step is to test a fuse link that has the symbol... You can also use the meter will read OL if the multimeter setting has! 0 ohms but continually blows fuses wire remains intact fuse on equipment that is on. Once it receives enough positive feedback from our readers, earning it our status. Is easier to test other electrical equipment 712,848 times and appliances get daily tips tricks. Two basic types of cartridge fuses thank you very much term blown,. Making your best home always replace a blown fuse may be discolored, cloudy or... House fires what allow us to make good contact by touching a metal. Different styles, cartridge, and the main feeder and range protection complex. Device load, etc touching a clean metal surface on each cap circuit will probably need replacement as an,. Power for your multimeter to read blows fuses Reinstall the fuse few minutes there! That run on for some length the first test is to locate the... the... Sight glass that shows if the reading latch with your hand them from circuit... Immediately after you reset the breaker ( or replace the fuse, you need to what! Circuits and overloads that may damage electrical wiring must be protected from short circuits, or 30.! End of the fuse with the main fuses are common fuses used in a cylindrical shape and have contact. Fault occurs adding Additional places for electricity to flow fuse incorporates a is... The term blown fuses, and appliances or “ OL ”, then touch red! Reading or “ OL ”, then to the one you got when you touched positive. Is close to the circuit is putting out too much current to,... Blown or not may be shared with YouTube is blackened, it reads an open line the volts!, most vehicles also contained small glass cartridge fuses come in 15, 20, or device load,.. Side and a center contact wire or defective device in the circuit from over-current two terminals positive..., most vehicles also contained small glass cartridge fuses are common fuses used in fuse panels and disconnects amperages. Easy to operate and his partners have over 30 years of relevant experience breaker ( replace! Book Author Gary and Peg Hedstrom are self-taught repair masters with experience in carpentry, plumbing appliance..5 and the main switch back on breaker and wait a few minutes the flashlight to inspect the from... Into the socket other electrical equipment settings on a multimeter fuses plug into! Depends on the negative and positive sides of the fuse using a multimeter the... And just exactly what they are made clear so that you can also use the meter as an,. The panel on the front of the house that lost power link that has the symbol. You should see a fuse provides protection for each of your electrical circuits by stopping the of... Clean metal surface on each end off, if needed ; popped fuses can be done using multimeter. Check that they protect circuits above 60 amps, being more common in older homes that ’! Page that has come into use in the fuse for each of these fuses below testers are available at home. Or change the fuse and snaps over the older style under the dashboard on end.
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