Not that I know much about horses, farming or electric to of which I am having problems at this juncture. See what happened is that I had to move all my tree equipment off my property so I found a horse farm up the road that rented me half a tennis court, the other half was strewn with manure and over grown trees. I have been there about 2 years and have cleared the rest of the tennis court pad ( even cut the net poles down). Yesterday I cleaned out the hay barn. Lots of rats. They have been letting me use the property at my disposal for my little tree company and I have been doing maintenance work to which there is a lot considering the place is about let gone to hell. EVERYTHING is messed up. I call it "farmy" I just got suckered into replacing the water heater in the stall barn and its going just like I thought... I mean just trying to get to the old heater you have to cross large rats, thick cobwebs under the silo into the darkness where there is only one way out. But the electric has me stumped. The old heater seemed to run on a 2 wire 220 line but the heater they gave me is a little tankless heater that needs 10/2 with ground all the way back to its own 30 amp breaker. I was wondering if there was a way to do that with the old 220 line. Truth is the place is a wreck, the hole the old heater is in a man shouldn't go unless he was going to kill everything else that was living in there. The owner is trying to do it cheap. I was thinking she would get me something that would fit right in. I think she paid 100 bucks for this tankless water heater that says its good for a bathroom sink. Why something that small would need its own dedicated 30 amp line I don't know. I would be scare it would melt if it reall got that hot. I never even heard of a 2 wire 220 line. I have been trying to clear the old hay and cobwebs to see if they cut the ground where I can't readily see.