⚡ Descuentos en cursos en video - Lleva tu aprendizaje técnico al siguiente nivel y aprovecha precios especiales antes de que termine la oferta.
🔥 Aprovechar oferta ahora 🔥
Household Electricity
Thermal / differential selection in department
2
hace 5 años
hace 5 años
Good afternoon dear, I comment that I want to modify the kitchen of my apartment which will have many appliances of high consumption, and also install an AA of 4500 Refrigerators in the dining room, but currently the only board that I have in the apartment arrive 4mm cables to the that a 25A differential circuit breaker and two 10A thermal circuits (1 for sockets and 1 for luminaires) are connected as all the components are SASSIN brand WTF? and they are already 10 years old, my idea is to replace them with all Siemens and make a small sectional table in the kitchen / laundry room because all the devices do not fit in the main one. In the following image I detail my idea and I would like you to tell me if it is OK or if you see any fault, my main limitation is that the kitchen / laundry is going to consume a band of amperes but the problem is that the cable that reaches the deto is 4mm so my limitation is there, I know that each branch of each board would be able to support the 25A but I know that if they support them at the same time the 4mm cable of the input would not support it since it is supposedly banked until 28A but given the high consumption that I will have in the kitchen / laundry room it seems to me that it will be insufficient if I decrease the thermal from 25 to 20 or 16 for the kitchen branch, what do you think? Thanks and regards Mauricio.
62.202
hace 5 años
There are a couple of things you have to say:
Regarding the 4 mm2 cable ...
1) How many meters do you have from the meter to the dashboard in your department?
2) How many years ago is it placed?
3) How much is the therma placed at the starting point of said cable?
Regarding consumption ...
4) specifically what power do you need or how many amps would a band of amps be for you?
Comment
2
hace 5 años
hello elektomaq thanks for replying. I detail what you ask me.
1) 25 meters
2) since 2008
3) I did not have access to the board where the ppal thermal is because it is in the garage and I have no key but I guess it is 32A.
4) 45 Amps maximum with everything running at once.
2
hace 5 años
Well, sup de depto = 60m2, the 45A is with everything on at the same time, which I supposedly never expect to happen, grill of the gas oven on, microwave, washing machine, dryer, electric kettle, coffee maker, dishwasher, iron, minipimer , Aire acond, I know that 45A is a lively one but I think it's easy to get if you start putting all those consumptions, if you want I can copy the excel table that I put together, but I understand that that consumption is if everything is working at the same time impossible. The thermal general give me some time and I get that value since I must enter the garage, thanks!
2
hace 5 años
Hello Alexis, it is logical what you say and I save a differential that is not cheap, the issue is that by the section of the cable I can not put more than one of 25 for the entire apartment or that limits me to consume approximately less than 15 amperes in the kitchen so that there are about 10 available for the air, sockets and lights of the apartment and it seems little 15A for the kitchen since if I turn on 3 or 4 artifacts at once it would already be in that value, that's why I wanted to unfold but not I'm sure it's right. as soon as I have the value of the thermal input ppal board I pass them. Thanks a lot!!!!
62.202
hace 5 años
The number of lines that feed a board does not define the amount of differentials contained in it, although there should be a single differential on that board, that would not be the reason, then we will comment on that ... meanwhile, if you have to buy , do not do it yet since the selection of the devices would not be entirely correct
7
hace 5 años
Mauri the differential does not protect the cable and it is always recommended that it be greater than the thermal ... so it will not work to the limit in case the thermal cuts. I would put a single differential for everything 40A next to the voltage protector. Then, if the thermals are suitable for the cable sections, the entire circuit will be well protected.
Regards!
2
hace 5 años
Hello dear, I commented that I still do not buy anything because this improvement and modification of the kitchen I plan to do later. I only bought the thermal for the 4500Frig AA that installed yesterday, a Siemens of 16A. the air consumes 7.50A but recommends a thermal of 1.5 that value so that of 10A was small. otherwise I have no hurry and I want the selection to be well sized. Thanks Alexis for your comment is correct what you tell me the 40A will be the circuit breaker to use and only on the entrance board and I remove the one I had planned to use in the kitchen
2
hace 5 años
Good morning dear. after so many laps I could see the thermal and differential on the low silver board. the thermal is 20A and the dif is the same as the one I have in the apartment, that is, 25A but with a 300mA trip while the one in the apartment is 30mA. greetings and I await your comments Elektomaq.
62.202
hace 5 años
hace 5 años
Ok ..... the big problem you will have on the main board (ground floor) where the thermal of 20 will not support the simultaneous load that you may have at certain times, this is of great importance due to the inaccessible of that area
you should increase the capacity of that thermal, but there arises another problem, if you increase it to 25 hold on a little more but the risk of acting due to overload continues, you would have to place 32A but for this, you must change the conductors that go up to your department at 6 mm2 and both differentials at 40A
the rest would be correct except for the voltage protector that you must place after the differential
Cheers
2
hace 5 años
Perfect, I am going to communicate with the consortium electrician to propose the replacement of the elements of the ppal tablet and the cables, because I am sure that they will not let me put my hand, you are correct that this ground floor thermal can not fail because I have no way to enable it if it is operated without disturbing someone, it is not clear from a technical point of view why the voltage protector goes after the differential, just that, the rest I understand and agree and thank you very much for your help. Cheers!
62.202
hace 5 años
Because the first thing that should exist on the board is a header switch with total cutting capacity, the differential meets that characteristic, the voltage protector does not
On the other hand, I suggest you exclude the lighting protector from lighting so that it does not leave you in the dark when you act
The first is regulatory. The second is a practical suggestion
Reparaciones similares solucionadas
¡Aprende a reparar con estos cursos YoReparo!
Curso Reparación de Fuentes Conmutadas de PC y Equipos Electrónicos
Maximiliano Resch
$ 40 USD
$ 20 USD
¿Tienes una mejor respuesta a este tema? ¿Quieres hacerle una pregunta a nuestra comunidad y sus expertos?
Regístrate gratis
Ad