When ever I touch the earthed part of an appliance with a sensitive area of skin (the underside of my wrist) I can feel a slight tingle of electricity, similar to putting a 9v battery on your tongue.
This only happens if I am downstairs, in bare feet, standing on the quarry tiled floor.
The problem is less if I unplug everything in the house. plugging in a few power supplies (mobile, router etc) that sit on the floor, makes the problem worse.
There is a connected earth rod into the ground by the side of the house.
Any ideas? (and yes I know the problem is dangerous and needs sorting:-) )
Adrian Smith