How To Tell If A Ceramic Fuse Is Blown Without A Multimeter

Testing a ceramic fuse is the only way to tell if the fuse has blown.

How to tell if a ceramic fuse is blown without a multimeter.

It will show scorch marks and the filament will be melted. Testing without a muultimeter. 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. If you re using a digital multimeter set to measure resistance touch the probes together to get an initial reading.

Make sure not to induce too much pressure or you might harm the conducting surface of the fuse. To check a ceramic fuse use an ohmmeter or continuity tester. This is necessary for ceramic fuses since they don t develop a blackened appearance like blown glass fuses. With an ohmmeter or multimeter you should see a reading close to zero ohms if the fuse is intact or infinite if it s blown.

They are easily identifiable. The fuse is dead if the display shows the value 1 or no sound is heard. Listen for the multimeter to beep continuously as you hold the probes against the fuse. To test a fuse without multimeter take a flashlight equipped with a flat battery.

Some fuses are fitted with control pellets that self destruct when they are blown. To do this use a voltmeter ohmmeter. A ceramic fuse however shows no damage upon visual inspection. Unscrew the bulb and get the.

You need to test whether the ceramic fuse has blown. If you don t hear any noise coming from the meter then the fuse is blown and should be replaced.