There is often a big difference between theory and practice.
In theory, this shower is unacceptable as regards security.
The regulations generally require a minimum distance between a water source and an electrical connection in a bathroom.
There is also the problem of current leakage to ground through water pipes.
But there is no electric leakage by the water flowing from the shower because water flow became drops in a few centimeters unless you puts your hand directly on the water outlet.
Current is limited by water resistance to a low level.
In practice, millions of such showers are used in Brazil and no electrocution has never been recorded.
Indeed, in practice, several factors contribute to the lack of real danger.
- in Brazil, the water tubes are PVC and thus insulating.
- The shower is located above the person. If the person had an electric shock in his hand, the natural muscle contraction that happens when current flow causes contraction of the arm muscles, thus opening the circuit.
- Power switch can't be actuated in working condition. You must choose the temperature before you use the shower.
- The shower is made completely with insulating material.
So, yes, it's dangerous in theory, but in practice it is an inexpensive solution that works well and does not cause accidents ...
This is an excellent example of the brilliant Brazilian side who do not just just theory, but look for practical solutions.
-