Is it the amps or the power?
It's the connection more than anything. Touch a 120V wire slightly with the end of your finger and you get next to nothing. Grip it with both hands and you get dead.
It took me years before I would do the finger test. I had seen it done many times but never had the guts to try it. About 10 years ago on a resi remodel I finally stepped up. Using a finger and thumb on the calloused ends you can't feel a thing. When you press down you can feel the 60 cycle buzz. The harder you press to more you feel it.