[Miles Offshore]

The main difference is that marine grade wire comes tinned the whole length of the wire where regular wire/auto-store/wally world wire of the same type is not and will corrode much faster(almost immediatly if your boat stays in the water like mine. The tinned wire will also solder much better for those who like to solder there connections,although I dont like to solder my connections as they can break easier with jolts/jarring etc. as opposed to properly crimped,liquid electrical taped , etc. I didnt stay at a holiday inn express but I did hang out at a 7-11 !