Want a HORROR STORY?? When I was first beginning, I did run a ground wire through the baseboard, through the adjoining wall and into the space containing the water heater and the connections to the bathroom. My plan was to use a clamp for the ground to the cold water pipe.
So, I found a pipe and clamped the wire. Job done . . . Driving away, I mentally reviewed the work and to my horror, I realized I had NOT connected the ground to the water pipe . . . (wait for it) ...
I had grounded to the gas line!
Squealing my u-turn and breaking every traffic law, I raced back to the house before the people could use the receptacle. They were oblivious to my terror ... I changed the connection and got out of there. Lesson learned: DOUBLE CHECK all electrical work before, during and after.