What Are the Different Types and Sizes of Fuses on My Boat?
March 4, 2021 · 6 min · 16K views
What this video covers
Selecting the correct fuse for a marine electrical circuit requires consulting the specific manufacturer’s manual for each appliance, such as a VHF radio, water pump, or inverter.1:18 No universal cheat sheet exists for fuse sizing.1:12 Fuses and thermal circuit breakers serve as the designated weak link in a circuit, designed to protect both the appliance and the supply wire from overcurrent.5:10 Common fuse types include ATO/ATC blade fuses, MaxiFuses, Class T fuses often used for inverters, and ANL fuses frequently found on high-draw equipment like bow thrusters.3:31 Thermal circuit breakers offer a resettable option for circuits like windlasses that may trip during normal operation.2:42 Never increase a fuse’s amperage rating to stop it from tripping; a recurring trip indicates a fault in the circuit or an undersized wire.4:09 Always size the fuse based on the wire’s ampacity and the manufacturer’s exact amperage requirements.5:19 Carrying a comprehensive kit of spare fuses ensures readiness for failures at sea.5:45
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