How To Know When A Ceramic Fuse Is Blown

If too much current flows through a circuit a fuse is designed.

How to know when a ceramic fuse is blown.

If the fuse seems stuck use pliers for this. With all that a fuse does it s important to know if you are using the correct one for the appliance or fixture that has blown its fuse. If you re using a digital multimeter set to measure resistance touch the probes together to get an initial reading. To do this use a voltmeter ohmmeter.

Listen for the multimeter to beep continuously as you hold the probes against the fuse. A homeowner can determine if a glass fuse in blown by performing a visual inspection and looking for a break in the thin wire and a brown discoloration in the center of the fuse. You need to test whether the ceramic fuse has blown. Testing a ceramic fuse is the only way to tell if the fuse has blown.

If you don t hear any noise coming from the meter then the fuse is blown and should be replaced. If you have glass fuse you can easily see if fuse is burned or not for ceramic types you will need continuity checker multimeter ohmmeter for continuity checker put fuse on black and red lead and if you hear beep than your fuse is ok if theres no beep fuse is burned for multimeter ohmmeter set multimeter to ohm setting closest to 1ω and put one lead on each end of the fuse and look at the. Testing a ceramic fuse is the only way to tell if the fuse has blown. A ceramic fuse however shows no damage upon visual inspection.

Thomas j peterson photographer s choice rf gettyimages. This is necessary for ceramic fuses since they don t develop a blackened appearance like blown glass fuses. Many electronic devices use fuses to limit the amount of current that goes through a circuit. Make sure not to induce too much pressure or you might harm the conducting surface of the fuse.