The truth is, your tractor nor you will get shocked since you are insulated by the rubber tires. Even if you did, it is not enough amperage to make a spark although the voltage might be 5000v or more, it is not enough amps to do you any damage although it does tingle a bit when you touch one. It really isnt the amount of damage that the fence does to animals rather the unexpected jolt that makes them not want to touch it more than once. I had my 5 month old German Shepherd pup run into one a few days ago and he would not come near the white cord to come back across the fence. I had to go over, pick him up and carry him back across. Now thanks to his full grown next door neighbor running mate, he knows how to duck under it. Man that neighbor dog is teaching him all kinds of bad thinks like how to open doors @3months old, how to cool off in the pond complete with mud top to bottom, how to chase chickens (he has caught a couple but not damaged them so far) and how to make believe dog fight which they do all the time.