Table of Contents
Can you test fuses with a multimeter?
To test if the fuse is blown, we require a multimeter. Once configured, a multimeter can measure the resistance of the fuse element. Resistance is measured in Ohms ‘Ω’.
How big of a fuse do I need?
Find the size of fuse by multiplying the amps required by the device (2) by 1.5. 2×1.25 = 2.5 then we will round up to the nearest fuse size (in multiples of 5 amps) which would call for a 5 amp fuse. Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart.
What are fuse ratings?
The fuse’s ampere rating is the amount of current that the fuse will allow through before beginning to operate. Both ratings are determined through testing.
How many watts can a 300 amp fuse handle?
At 12v, 300 amps (energy to blow the fuse) is 3600 watts.
Can you use a multimeter to test fuses?
If you’re using a digital multimeter set to measure resistance, touch the probes together to get an initial reading. Then put the probes on either side of the fuse and check if the reading is similar. If it is, then the fuse works properly. If you get no reading or “OL”, then the fuse has blown.
What fuses can I use to replace a fluke multimeter?
The following fuses are proper replacements for Fluke multimeters and electrical testers. Fuse replacement for Fluke testers including the Fluke 1507 and Fluke 1503.
How many amps does a fuse need to be tested?
Fluke uses fuses with a minimum interrupt rating of 10,000 and 17,000 amps in their testers. If you take a CAT III 1000 V meter with the test leads in the amps jacks, you will have a series resistance of approximately 0.1 ohms (0.01 for the shunt, 0.04 for the test leads and 0.05 for the fuse and circuit board conductors) between the leads.
Why choose the correct fuse for your tester?
There are many reasons why choosing the correct fuse for your tester has the potential to be a life or death situation. The following fuses are proper replacements for Fluke multimeters and electrical testers.
What is the minimum interrupt current of a fuse?
This high current is specified as “minimum interrupt current.” Fluke uses fuses with a minimum interrupt rating of 10,000 and 17,000 amps in their testers.