Excuse me, I installed current transformers in three electrical inlet properties, and then I installed a transformer in my facade! In this case, will there be an error in the meter reading?

There must be. Look at the transformation ratio. The distance of the line. But these can all be forgotten.

But the reality is definitely a big error, because the meter reading time is different. Depending on the electricity consumption, I don't know when the property copied the watch. There is an error between the watch copied in the morning and the watch copied by myself in the afternoon.