Thermal and Circuit Breaker
In Argentina no more simple thermals are used, that is why the doubles are identified, for example, 2 x 20A, which means two twins with 20 amps. The configuration that you mention is recommended for connection (lowering in pillar) of 4 mm, that is to say, it is correct in your case, thus you put cable of 2.5 mm in the circuit takes.
2x20A is bipolar of 20A. 2 is the number of poles, it is the same
in yes the shots are good, I do not know if I would put 20A in TUG (general use shots) since usually they are made 1 or 2 circuits TUG but with thermal of 16A
One thing to keep in mind, is that the thermals do not protect consumptions (washing machine, microwave, lights, etc.). So, to know if this is ok you have to take into account 2 fundamental things:
Most importantly, the thermal gauge (1, 2, 3, 6, 10, 15, 16, 20, 25, 32, 40, 50, 63, 80, 100, 120A) is less than the ampacity of the cable. For example the ampac
ampacity of 2.5mm2 is 21A, the of 4mm2 is 28A. Like 21A <20A you can put the thermals quietly. The second reason is that the caliber is accepted under regulation, but this is something more technical and regulatory, does not mean that it loses value but what really protects is that you make good selection of thermics. A greeting to nastor and the consultant
Hi Agustin, your reasoning is very considerate, but put yourself in the place of the boy recently received; and in general lines is correct the choice of thermal protection, but considering that it has 4 mm cable for its circuit of sockets. If you stay in the forum, surely in a couple of months you will be cleared your doubts.
regards
Many thanks nastor and agustinp, sorry for the doubts honestly did not know that they were actually called 2x20A since one is commonly talked about 20A. Then I will do that I will go down the meter with cable of 4mm to a general thermometer of 25A, I will pass through the circuit breaker of 40A and of the I will take out two thermals one of 10 A for the lighting wiring with section 1.5 mm and another one of 20 for the sockets with 4mm section
hello, colleagues, I love to explain to others some doubt, I will not have problem. I know he's just received and I know he's going to value any explanation. Maybe he did not know that since in the techniques usually it is taught more turning and welding than electrical installations (or at least it was my case)
Gredmil: 2x20A or 20A bipolar means exactly the same thing. A thermolar four-phase, three-phase, is no more than 4 thermal unipolar mechanically joined so that if one pole jump all jump. That's why we say 4x32A (one-pole 32A) 1x6A (unipolar 6A) or 3x100 (three-pole
Gredmil, do not go crazy with the thermals, you can put 6 mm cable to make sure there is no voltage drop in that section, and you can heat 32 A, or you can place a smaller one if you know you will not use it limit. In your case you can place 2 x 25 A. Overdementizing the cables does not necessarily entail oversizing their protections. Consult your doubts if I do not explain myself.
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