How is everyone doing? I ask you a question that has me in total doubt ... I want to make the cable run from the main board (general) to the sectional board that is inside the house ... The general board is on the corresponding pillar of the meter and from there the cables would go down and go below the ground until you go up to the sectional board making a total of 7 meters ... It happens that there is still the floor with its corresponding fill and subfloor. That's why the idea is to pass the cable now so as not to break the floor in the future ... But to give you more security, I thought about going through the semi-heavy gray 20mm pipes The question is ... which cable to use: 4mm unipolar common cable ... for all 3 types, phase, neutral, ground inside the pipe? OR 4mm tripolar subway ..? loose? o Inside the pipe? out of that, from a 25A thermomagnetic to a 40A or 25A circuit breaker ??? the cable should be 4 mm right? either for the entrance from the meter to the general thermal as for the arrival to the circuit breaker of the sectional board ...? The sectional board has the following thermal ... Differential circuit breaker of 40A or 25A (I still don't know well) (any recommendations ??) 20A thermomagnetic for shots .. 10A lights thermomagnetic Thermo-magnetic 10A quincho .. All ideas and recommendations are well received ... Thank you as always ...

Hi argfedex That is a job that is done only once. I would put reinforced pipe and sintenax cable or similar three-pole. The pipe is thicker better, you never know if in the future you would have to reinforce the lines. The descent of the company to the pillar is 1 "1/2. A detail, as you still have to do the subfloor, would put a row of bricks on the pipe, to mark the area and protect it Regards