Good morning, first of all I want to thank you for all the help you offer, I'm from Misiones, Argentina. I tell you my situation: the pseudo-electrician who did the installation in my house did many things wrong and therefore we are rethinking the installation and the sectional board. The connection of the house is three-phase, the electrician had planned a phase for the air (it is a future forecast since since the house is fresh and for the moment we are not going to put them), the electric oven, the electric water heater, the water pump (the house has a well); another phase for the shots (all); and the third phase for the luminaire (all). Reviewing the forum and learning I realize that the phases are not well balanced, so we planned to redefine them (among other things that had to be rethought). The particular problem of this query is that for everything that is kitchen and laundry there is a single cable pipe, where a 4 mm cable (phase for the oven taking), two 2.5 mm cables pass (the luminaire phase of the laundry and the socket phase), two other 2.5 mm cables (the neutrals of the luminaire and sockets, there is no neutral exclusive for the oven socket cable), and a ground wire. To maintain this configuration but that it is correct I would need to pass at least one more cable (the neutral for the oven, so the 3 circuits each have their bipolar thermal), so I was thinking that instead of putting a circuit to the exclusive oven socket, and another one for the rest of the kitchen and laundry sockets (refrigerator, washing machine, microwave), make a single circuit where all the sockets (the oven plus the rest) are with 4 mm cables and 20A thermal. Since this circuit would be quite loaded, I planned to feed it with one of the phases that I would not share with the rest. Another question is about the distribution of the phases (since I am limited by the installation of pre-existing pipes), so that they are balanced, but I don't know whether to put it here or open another topic in the forum. Thank you in advance for your answers.