--- Quote from: Mojo Jojo on September 09, 2014, 11:49:27 PM ---Never done marine electronics but fuse everything added on a car. Lawrence Mark 4 dsi 12v 7a batterie , what size inline fuse ? I was thinking 10 amp. All input appreciated.
--- End quote ---
I use 5. You need to think about what the safe rating of your wires is. The recommended "Maximum amps for power transmission' for 14 gauge wire is like 5.9A.
-Allen
Martial Mathers:
Humminbird lists a 1 amp fuse for my fishfinder. That's probably sufficient for most other FF models. The power cable it came with looked like 22AWG which is only rated for maximum 3.7 amps. I'm still plexed by what happened. In theory a device should never draw more current than it needs. A device that requires less than 1 amp, shouldn't pull enough current to turn red hot, and melt the PVC casing off its wires (even if the connectors get damp). This is a factory plug that runs from the head unit straight to the battery. There is no way to mess it up. Reverse polarity is the only possible error, and there's a diode to counter that. I've already PM'd Smokeyangler; I'm very curious if his unit that burned up is also a Humminbird.
Mojo Jojo:
I have some 2.5 amp I will start with if it blows I will put in a 5 amp and always carry spares. Thanks for the info.
Dirk1730:
--- Quote from: polepole on September 10, 2014, 12:19:07 AM --- --- Quote from: Mojo Jojo on September 09, 2014, 11:49:27 PM ---Never done marine electronics but fuse everything added on a car. Lawrence Mark 4 dsi 12v 7a batterie , what size inline fuse ? I was thinking 10 amp. All input appreciated.
--- End quote ---
I use 5. You need to think about what the safe rating of your wires is. The recommended "Maximum amps for power transmission' for 14 gauge wire is like 5.9A.
-Allen
--- End quote --- How do you keep your fuse from oxidizing going out in the salt and all. Everytime I put one in it lasts one or two days of fishing on the salt. Then in frustration I take it out.
Dr. Steelhead Catcher:
Dirk1730.....This style fuse holder will prevent oxidation http://www.wiringproducts.com/atm-mini-waterproof-fuse-holder-16-ga-wire.html You can find these at most auto parts stores too.