Hello, again with my doubts, in my house at the end I made 2 boards, one in low planya and one in high (apart from the pillar). My question is: in the section of the ground floor I have a differential and a thermal circuit, 3 circuits, I also go to the top floor board with a thermal circuit that connects with the thermal circuits of the 3 circuits upstairs. Can I go to the thermal that goes to the top board from the differential below to not put 2 Differentials, one above and one below? Or if or if I have to leave the main thermal down to another differential up? Thank you!

friend, you can do what you explain without problems, the only thing you should keep in mind that the capacity of the thermomagnetic is according to the section of the wires that feed it, for example if the entrance to the board is 2.5 mm the key it cannot be greater than 16 amper, this is to protect the conductors against a short circuit