Hi,

To the ET200SP Energy meter correctly works, it is necessary that current and voltage information would be measures in the right points.

A phase shift or a wire swapped could leave to read very “implausible” values.

Sometimes, however it is not easy to find where is the wrong wiring.

To help in this task, I place here, examples of “causes and consequences” of wrong wiring.

I thanks to Mr. Gabriel Gil, that built the theory part of this example.