The wrist cable is attached to my wrist. I am right handed, but had to do most of this left handed so that I could take the photographs with my right hand. When connecting the wrist cable, wet your wrist (lick it) at the contact point to ensure good grounding.

If your ground is good, you do not need to worry about getting a shock. However, do not handle mains powered equipment while grounded like this. Battery powered drills and screwdrivers cannot give you a dangerous shock.