DMNCS wrote: ↑03 May 2025, 16:22
dervu wrote: ↑03 May 2025, 15:52
Neutral is always grounded at some point in TN-C. It is not as good grounding a separate wire, but still it should be bonded at sockets at least in bathroom and kitchen for safety purposes.
That doesn't explain why it would work and then stop working, unless this kind of installation does not handle things good enough anymore.
So the problem isn't necessarily the TN-C? I mean - TN-C systems are not the root cause of the issue we have, there are other contributing factors is what you're trying to say? The only thing I haven't tried yet (after trying almost everything and replacing the entire PC) is getting another PC case, this one was pretty cheap and it's possible that the case itself is on floating ground, but I doubt that honestly.
I see that you are pretty active in this forum and very well informed, if you have any suggestions for me, I'd be more than happy to read them.
Sure, TN-C is worse than TNCS or TNS, but it doesn't mean it's source of all the problems. Only way to find out is to track if there is some kind of interference simply by disabling things in apartment, building, area, which will be hard on your own.
All depends on how bad it is and how good your existing electrical system is at handling given type and mount of interference. Depending on where source is. That is why it's so hard to track it down, sometimes even impossible if it's outside of your property and it doesn't fall into any law protecting from such frequencies.
It's not EMI related subforum so I don't want to write too much on it, so my little advice is to simply check your hardware in another place, if you want to rule it out, possibly with someone who doesn't experience such issues.
