Hello!
The RCD switch operates with a leakage current in the range of 0.5 to 1IΔn. If the switch does not operate within this interval during the test, the driver is disqualified. It is therefore clear that its task is not to limit the shock current, but the duration of the shock.
As for the title question:
Quote: ...when the dryer falls into the bathtub. I have a question: will we feel an unpleasant impulse before the switch trips? One electrician told me that it was, and another that this time was so short that the brain would not have time to "register" it.
then the situation should be considered in two ways.
In the first case, when the metal bathtub is covered with equipotential bonding, the operation of the (functional) switch will turn off the voltage. However, it cannot be said that a person staying in a bathtub will not experience shock current flowing through his body.
In the second case, when the bathtub is made of non-conductive materials, or even metal, but is not covered by equipotential bonding because there are no foreign conductive parts in the bathroom, i.e. the bathtub is actually at free potential, the switch will not trip, but there is no risk of electric shock. This is not the case because a bathtub isolated from the earth potential does not allow any part of the current to "escape" into it.
However, of course, under no circumstances should you experiment.
The conclusions to be drawn are obvious. You should try as much as possible to eliminate sockets from bathrooms and, of course, washing machines that have already settled there.
The bathroom was the place where the most serious accidents occurred due to environmental conditions. Today, when the technologies used in construction allow for the complete elimination of the earth's potential from one room, it can become one of the safest places in the apartment.
Let's not change our attachment to the bad tradition of this trend.
