How to assemble a three-phase shield in order to let it into the house, bathhouse and garage in one phase?

Roman asks:
Now the house is connected to a single-phase network! The conditions for three-phase input are obtained! How to assemble a street shield, if you need to put one phase into the house, the second into the bathhouse, and the third into the garage (while it is not there and this phase is not planned to be used yet)!
The answer to the question:
Hello! So put it together - one machine to the house, one to the bathhouse, one to the garage. Connect the cables to the house, garage and bathhouse as follows: phase wires to the machine, and neutral and ground conductors to the buses. In the buildings themselves, in the introductory board, make wiring (distribution) among consumers and divide them into
groups. The main thing is to calculate all the wires correctly in cross section. More details about three-phase switchboards we considered in the article https://our.electricianexp.com/en/instrukciya-po-sborke-trexfaznogo-elektroshhita.html
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