@Roland W @floydR Attaching ground wires to water pipes, yes, I've seen this in many houses. Although it works I'm quite sure it's illegal in Italy, I'll check it. That's because people got electric shock touching the pipes. If they don't create the ground connection for the building I suppose I'll have to do without
This morning I did some measurements, just to see what's going on, strange numbers come up! Nothing is switched on (no TV, no washing machine, nothing), a part from the fridge, my notebook, a lamp, a couple of cell chargers and three Liitokalas LOL. Monitoring says I'm consuming around 1A, multimeter says 238V.
| Hot - Ground | Neutral - Ground |
Lab, multiplug extension connected to another multiplug extension | 9V | 7V |
Lab, wall plug | 86V | 1V |
Bathroom, wall plug | 120V | 105V |
Kitchen, wall plug (open space) | 140V | 85V |
Balcony, wall plug where I'll connect Offgrid Inverter (open space, about 10mt / 32ft distant from kitchen) | 140V | 85V |