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Remove the power then remove the fuse. With an ohmmeter put the leads on both ends and read the meter. If it shows "zero" then the fuse is good and can conduct electricity. If it shows anything else than the fuse is defective and needs to be replaced.

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8y ago
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8y ago

Any fuse is checked for continuity to make sure that it is still operational. This is done with an ohm meter or a continuity tester. If there is a reading on the ohm meter or a beep on the continuity tester then the fuse is good. If there is no reading on the ohm meter, or nothing heard on the continuity tester then the fuse is open and needs to be replaced.

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Q: How do you check a double 30 amp fuse?
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