Why can not I connect one phase to the kiosk, but I need a three-phase input?
Hello, we want to connect the stall to the power supply, the electric grid company sent the scheme of the photo I will attach. So I can’t understand, it seems to be written there as a counter 3 phase direct-flow. Why 3 phase in the stall, if there will be used 220V? Power is up to 15 kW. You can give a decryption of which meter to buy and an approximate connection scheme for a small stall, where there will be only sockets and lights. The current is a maximum of 25 amperes, I can’t understand why it is impossible to put single-phase there?
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Hello! Because, apparently, you are organizing a three-phase input, you can connect each of the refrigerators in your stall to a separate phase. In addition, TKP 45-4.04-149-2009 says:
9.13 Electrical networks of residential buildings should be based on the following:
- with a design load at the entrance to the apartment up to 12 kW, it is recommended to use a single-phase input, with a design load of more than 12 kW, as a rule, a three-phase input;
But this is a very controversial statement, which is no longer found in related electrical regulatory documents.