Now it's time for the first field test. I assembled the 3d-printed case (with some tape) and installed the current transformers in my mains input. (Fortunately, there were 4 free wires on a cat cable that brings DSL to my modem/router)
![](https://cdn.hackaday.io/images/1024941577814127239.jpg)
After that, I was able to check the values transmitted to the smart home with a clamp amp meter.
![](https://cdn.hackaday.io/images/3962551577815421009.jpg)
-> field test passed -> design and 3d print a better case (with DIN-rail mounting brackets)...
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