| Ok, this shower uses electricity to heat the water as it flows? Was the wiring replaced, or just connected to a new, more powerful heater? Is the wire exposed anywhere you could read on it what size it is? I am not even sure if you call cable suitable for 20 amps 12 gauge. Maybe best to go to fundamentals. Can you feel the wire anywhere? If it gets warm, it is too small for the heater. If it doesn't get warm, likely it has nothing to do with the problem.
Does the drain disappear under the same floor as the wiring? Perhaps something was smeared on the drain pipe that gets warm during a shower. |