Sometimes on simple inspections we get those “made my day” moments. It’s a mountain home that was originally a detached garage built well over 50 years ago. It was converted into an apartment, then spun off as a one bedroom mini-home.
There is a two conductor gray extension cord plugged into a power strip used for the computer and accessories. The other end of the extension cord was cut off and the wires bonded to the copper supply pipe coming in from the water well. I confirmed that the cord was “hot” with my non-contact current sniffer.
My two theories are that the seller thought he was heating the pipe to prevent freezing or he thought he was grounding the power strip.
In any event, how in the world does this work? How can this possibly not short out? Can there be enough impedance in the copper pipe to make this work? Bizarrely amazing!
This kind of thing makes our biz fun.