First of all, thank you for your informative pages about the electricity-based problems. We just got a fiber connection installed by a local provider and there seems to be some trouble with it. We wanted to reduce wireless connections and as a part of the project, I also built a wired network all over the house. When the cables are connected to a laptop, a tickling feeling comes to my forehead and hands. The same thing happens to my wife. The local provider nor the electrician has not been able to help. We haven't had such issues with the 4G-routed / Wifi.
The fiber and network routers are installed in another building and then we have a RJ-45 connection to our house. Currently, we have CAT 6 UTP cables but these can be changed to shielded ones. Also, the network cables are partially installed next to the power cables which might be an issue.
We have a meter in use (Cornet ED88TPlus) and have done some measurements, but I could only find a fault in the VOIP system that was a part of the delivery. It actually gives high EMF rates to the cables but switching VOIP off does not remove the symptoms.
Could the ground loop isolator ( https://www.electrahealth.com/Ethernet_Ground_Loop_Isolator.html ) fix the issue or do you have some other guidelines where to seek next?
With Best Regards Mika / Finland
Customer support service by UserEcho