Ryan, Select the fuse for the wire, not for the load.
I would put a 150 A - 200 A fuse on the starter wire (it is probably a 4 ga or better). Btw, these fuses can easily work through some higher current (even 50% higher) for a short while, so possibly a 100 A fuse would be fine. On the house side, especially, if you never going to use it for starting the motor, you could get away with a 20 A fuse. On my boat I have a dual fuse attachment on the battery - one 200 A for the big red wire (4 ga) and a 15 A for the other wires (one coming from the solar system, the other to the loads that don't go through the A/B switch (e.g. bilge pump). Something like this: https://www.bluesea.com/products/2151/Dual_MRBF_Terminal_Fuse_Block_-_30_to_ 300A It works great, provided you have enough room above the battery (it needs about a 1/2 inch extra on top) Marek Ottawa, ON -----Original Message----- From: CnC-List [mailto:[email protected]] On Behalf Of Ryan Doyle via CnC-List Sent: Saturday, June 04, 2016 09:33 To: [email protected] Cc: Ryan Doyle <[email protected]> Subject: Stus-List Battery Terminal Fuses Hey guys, My 1976 30mki did not come with fuses at the battery terminals and I would like to add them. I have a simple system with two batteries - one starting and one house. My house loads if I'm running the autopilot and I have every blower and fan and led light on and add up to 12.3 amps. I have a new blue sea breaker panel and all new 14 ga wires throughout. However, I have no idea what size fuse to put on the terminal of my starting batt. The motor is an atomic 4. Anyone know? Thanks, Ryan _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated! _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
