(28-05-15, 09:39 PM)anutz link Wrote:"A 15A fuse for this application may well be incorrect," - Absolutely !! - VERY likely incorrect & probably dangerous !!!
"the wires, depending on their gauge will have a specific amperage they can carry and a specific fuse will be needed to protect them from over current situations..." - >>>Spot on
"Depending on the device it MIGHT already have its own fuse built in?" - but that won't protect the wires between it and the battery !!!
The fuse will only protect what is after it, hence why it should be kept as close as possible to the battery. :book
The example anutz gives you can just about see a fuse holder behind the main box with a red wire either side of it, about 5" from the ring terminal for the battery.
Rating wise I would only expect a 1amp or at the most 2amp fuse, but it depends on the device, how many outputs, etc