Checking your socket for grounding: how to find out whether your connection is earthed
How can you tell whether your socket is properly grounded? Earth contact, socket tester, older buildings and RCD – how to check the connection for grounding products safely.
Grounding (earthing) simply explained: what is behind it?
What does grounding or earthing mean, how does the connection via the wall socket work and what does research say? A factual introduction.