Checking A Ceramic Fuse

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Checking a ceramic fuse.

This is necessary for ceramic fuses since they don t develop a blackened appearance like blown glass fuses. Multimeters read both volts and ohms. Turn off the power supply to the appliance or other electrical device if the device is hard wired. Turn off the power supply to the appliance or other electrical device if the device is hard wired.

Ceramic fuses act as a safety device that interrupts the electrical power supply when electrical overloads or surges occur. If you want to check a sample fuse from a batch to ensure it will blow when subjected to an overload you ll have to set up a more elaborate test rig. How to test a ceramic fuse step 1. Turn the meter on and set it to measure continuity.

Turn the dial on the multimeter so it points to the continuity. Testing a ceramic fuse is the only way to tell if the fuse has blown. How to test a ceramic fuse turn off the power supply to the appliance or other electrical device if the device is hard wired. If you are using a multimeter.

Set an ohmmeter or multimeter dial to zero. Use the testing probes of the voltmeter to test the metallic ends of the fuse. Testing the fuse 1. Set an ohmmeter or multimeter dial to zero.

If the appliance has a plug unplug the power cord. Touch one end of the. Set your multimeter to ohms lowest range if manual ranging and check the resistance is close to 0 0 ohms. Put one lead on each end of the.

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. Set your multimeter to continuity and check that it beeps when connected to the fuse. If a continuity tester indicates continuity when you touch its lead to the ends of the fuse it s good. How to check a fuse by testing it with a multimeter.

Turn the equipment off and remove the fuse. Make sure the device equipment or vehicle is turned off before the fuse. Touch one end of the fuse terminal with the black test probe and the other end of the fuse terminal with the red test probe. The voltmeter suggests the resistance of the fuse.