"Joseph Gwinn" wrote: clip) This would be easy to check with a voltmeter.
And to prevent by
running a ground wire from showerhead to drain pipe.
^^^^^^^^^^^^^^^^^^^^^
I wouldn't hesitate to run a ground wire as a temporary fix, but how do we
know it will carry only 4 or 5 mils? It will carry current 24/7--I would
try to figure out how line voltage is getting to the shower head, and fix
that.