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
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
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:-) )