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Compass Marine How To | all galleries >> Compass Marine How To Articles >> Fusing Voltage Drop > 30A Fuse - 5A Load
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30A Fuse - 5A Load

30A Fuse - 5A Load

This is the same set up now with a 30A fuse and just a 0.019V drop....

The smallest wire in this case is the short section of the 12GA fuse holder. It has a max ampacity of 45A...

The key take away here is that using the largest fuse that is well within the safe range for the wire results in the least voltage drop in your system wiring.

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Craig 10-Mar-2015 02:44
Great job!

Have you ever considered performing these tests with 32 volt AG type automotive fuses, contrasting the results against typical 250 volt AG type fuses found in stores? Many people stop reading/thinking for themselves as soon as they see the amperage rating...