The resistance of the burning shower is a problem that affects many people every day! Who has never had problems with the resistance of the shower burning? In this article we will talk about how an electrical resistance works and why the shower resistance can burn , come on guys!
Electric shower: Resistance
In case you don’t know, what makes the water in the electric shower hot when bathing is precisely the resistance of the shower. Resistance is responsible for transforming electrical energy into thermal energy, that is, this thermal energy is the heat that is used to heat water.
The resistance works as if it were a controlled short circuit, where the resistance that is in contact with the water absorbs all the energy of this short and turns into heat, heating the water that absorbs all this heat while cooling the resistance.
But what happens if there is no water in the shower? We did a test here in the Electric World by connecting a shower resistor out of the water. In the image below you can see that when the shower resistance is turned on in these conditions it instantly heats up, and as there is no water to absorb all the thermal energy that is being generated, the material of the resistance heats up so much that it breaks, it may even catch fire.
Electric shower: Burning resistance
This explanation that we have just given is just what people call burning the shower. So the resistance literally burns, but then, what are the reasons why the shower resistance keeps burning? Is it just the lack of contact with water? There are some possibilities for that and we will show you now.
Shower resistance burning: Low water volume.
To increase the temperature of the shower water, it is common for people to close the valve almost completely to reduce the volume of water. If you didn’t already know, the less water, the faster it will heat up.
However, if the water volume is too low and the diaphragm that turns the shower on and off through the water volume is locking or drying out, the resistance may burn if any part of it is exposed outside the water.
Shower resistance burning: Spire touching
In the image above you can see that the shower resistance is formed by several turns! When one turn of the resistance touches the other, it ends up modifying the entire resistance, causing that point to heat up much more than the rest of the resistance. In these conditions, not even the water is able to absorb all the heat generated and this in the future can lead to the rupture of the electrical resistance of the shower.
The tip to avoid this problem is to always check the turns of the electrical resistance before installing the shower. If you notice that one or more turns are touching, you need to separate them before making the connection.
Shower resistance burning: Temperature change
Changing the temperature of the shower while it is on can also cause the resistance to burn. This happens because when changing the temperature with the shower on, there is a sparking and formation of small arcs in the shower pole, a condition that in the long run wears out the resistance.
The correct and also safest thing is to change the temperature with the shower turned off. In electronic showers you can change the temperature with the shower on. This is one of the advantages of electronic showers that we have already shown in another article here in the world of electrical, it is worth checking out!
Shower Resistance Burning: Air in Hydraulic Tab
The accumulation of air in the water pipe can also burn the resistance of the shower, but how so? Air pressure can cause the shower to turn on without the water reaching the reservoir.
In these cases the resistance heats without water which causes the resistance to burn almost immediately. It is important to observe when opening the register if the water is slow to flow, this test should be done with the shower disconnected from the electricity or at cold temperature.
Shower resistance burning: Parallel marks
The parallel resistance brands are always cheaper than the original shower brands, because the brands always use worse quality materials or do not do all the quality processes to guarantee the safety and good service life of the electrical resistance. It is always recommended to use resistors manufactured by the original markings of the showers, because otherwise it may even catch fire and put the user at risk.
Electric shower explodes?
A lot of people make reports of an electric shower that exploded, but I have never particularly seen a case like this and I find it very unlikely that a shower could explode. To answer this question, we did a test to see if the shower explodes, if you want to know the answer, just access the video below that also shows in practice all the resistance burning conditions that we talked about in this article.
These are the main reasons that can cause the shower resistance to burn! Whenever installing a shower or changing the resistance, it is worth checking each of these details to ensure a longer shower life, in addition to the safety of all users.
I hope you enjoyed this article, share these important tips with your friends and family, and if you have any questions or suggestions, leave them in the comments and we will respond.