How to Test a Ceramic Fuse
- 1). Turn off the power supply to the appliance or other electrical device if the device is hard-wired. If the appliance has a plug, unplug the power cord.
- 2). Set an ohmmeter or multimeter dial to zero. Multimeters read both volts and ohms. If you are using a multimeter, set the multimeter to the ohm setting.
- 3). 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.
- 4). Read the ohmmeter display. If the display shows the needle at zero or the digital display shows zero, the fuse is in good working condition. Any other reading above zero indicates the fuse is no longer working and has blown.
