How Many Ohms Should a Good Fuse Read? Understanding Fuse Resistance

Learn how to test a fuse using an ohmmeter and what resistance reading indicates a good or blown fuse.

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A good fuse should read close to zero ohms on an ohmmeter or multimeter. A very low resistance measurement indicates that the fuse is intact and allowing current to pass through. If the fuse reads as an open circuit or infinite resistance, it is blown and needs to be replaced. Proper functioning of fuses ensures the safety and protection of your electrical devices.

FAQs & Answers

  1. What does it mean if a fuse reads zero ohms? A zero or close to zero ohm reading means the fuse is good and allowing electrical current to flow through it.
  2. How can I tell if a fuse is blown using a multimeter? If the multimeter shows infinite resistance or an open circuit, the fuse is blown and needs replacement.
  3. Why is it important to test fuse resistance? Testing fuse resistance ensures the fuse is functioning properly to protect electrical devices from damage.

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