I always just used the back of my hand to tap it, it's not like your hooked up to Ole Sparky.
We had a fencer call a "Bulldozer" and it would put a grown man down , I think Ole Sparky would be a joy compared to that fencer.
Last year, the first time I checked this new fencer, it shocked me thru my tennis shoes. Usually tennis shoes will insulate me, at least with the fencers we had before. Not this one. The label says it's good for 100 miles of fence.
All I know... the dang thing will hurt you.
