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Old 04-05-2016, 11:32 AM   #1
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City: Pensacola, FL
Vessel Name: Sea Triscuit
Vessel Model: Transtar 50'
Join Date: Dec 2015
Posts: 202
Overcurrent protection


I would like to install overcurrent protection for the two house banks. 4awg wire was used with a temperature rating of 105c, but the wiring for the banks is bundled. It is my understanding from reading Nigel Calder that an 80amp breaker of fuse would be appropriate on each circuit as they run in the engine space, but then multiply by .7 because they are bundled so ~56 or rounded up to 60a. Calder states that the fuse or breaker should not be right with the batteries due to fumes and corrosion. However, it seems to me that the easiest way would be to put a fuse right on the battery terminal and then run the cable from it. What is the correct way to handle this?

Thanks for the help! This forum has already been an incredible wealth of information!

What about these MRBF Terminal Fuse Blocks combined with 60a fuses?
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