Frank DuVal
Senior Member
- Occupation
- Electrical Contractor, Electrical Engineer
Yes, I do agree a tub full of mercury that not connected to a ground will not conduct, but when the water is running, then there is a path.When I say nothing is conductive, I'm referring to the tub and pipes. It doesn't matter if the tub is full of salt water, it still won't trip the GFCI.
However, if the tub is made of a conductive material, and the water spigot/controls* are bolted to the tub, then there is a water connection all the time. Plastic tub, nope. Shower, water is connecting through dots or maybe streams, depends on shower head , to people. Or when they operate the controls.
* I have not run into non metallic shower or tub controls. Yes, most of the kit laundry tubs are non-metallic controls.