I'm in the real estate business. When a merchant installed a three-phase transformer meter, it mistakenly connected two phases of the line, resulting in the meter always sensing only one phase.

Of course it's unreasonable. There are at least 1: 10 transformers. You can do this calculation. Two meters is normal. Only by connecting the wrong line, you can subtract the previous ammeter bottom from the ammeter bottom and multiply it by the transformer ratio, which is the electricity bill he uses. There are two wrong connections, even if those two are normal. The ratio there is multiplied by your normal ratio.