I have a 50 amp 250 volt shore power cable from my 42 foot boat. When I'm around I live on board the boat and the cable is at the pier. I keep the cable above the water with fishing line and velcro on the dock, but one day the switch went off and I smelled ozone. I was told not to waste the entire 75ft of cable and replace the end. I was concerned about this but this plug and cap came with full and detailed instructions. I cut my cable with a hacksaw and a good (very sharp) kitchen knife (I had a cut so be careful). I also cut the cable about 10 feet and found the insulation was wet. I came back about 5 feet and was bone dry. I also bought a case and cut it open to just fit the cable. Before pushing it forward I taped the cable with 3M 5200. I used industrial electrical silicone to seal the cable. Also apply dielectric grease to the connector. Works like a champ, goes straight into the cable master and triggers the switch perfectly. The improvements I've made should make this cable much better and last longer than the 8 years it lasted.