So I started playing with my tig the other day. I got to use it for about 20 minutes until I noticed a puddle of liquid on the floor. One of my hoses had a hole in it. When we pulled the sleeving we found that it was the power hose and it looked melted. Am I correct in thinking that the power hose on a tig carries liquid? I'm using a wp-20 torch. Maybe I let it cross the ground cable somehow and it arced through? I'm new to tig so it kind of surprised me.