This is a 350A Class T main battery fuse. It powered, among other things, a windlass and bow thruster.


Someone thought it was OK to install the smallest loaded wire and terminal on the BOTTOM and then stack the HIGH AMP loads on top of it.. This is a REALLY, REALLY, REALLY BAD IDEA!!


DO NOT DO THIS!!!!


The highest amp loaded terminals/wires ALWAYS go on the bottom and smaller loads stacked in order on top to a max of FOUR TERMINALS PER STUD!


The bottom line here is that this almost started a boat fire. The fuse holder itself was physically MELTED.. Please remember that high resistance can start fires well before a fuse or breaker trips..


This fuse holder had FIVE wires on it with the heaviest load on top of the four smaller wires.... "DANGER WILL ROBINSON"....