Dave Plowman (News) wrote:

Sounds like a broken earth, and the RF suppression in at least one
appliance was dumping volts onto the rest after that socket - which
probably was at such a low current as not to be lethal. However, the ring
should have an earth from both ends - or is it a radial circuit?

I got a similar "tingle" from the washing machine a few years ago, a
3-neon socket tester showed no earth, the problem turned to be a poor
connection at the screw terminal of the socket, rather than a lack of
earth provided by the ring itself. It looked like water had found it's
way into the surface mounted pattress at some point, not too uncommon in
a kitchen I suppose.

I should have fitted an RCD at that point rather than only gettng round
to it last week I suppose.

Several years earlier I got a jolt from a thinwire ethernet LAN where a
company had imported their PCs from a European sister company, but
instead of replacing the shuko-IEC leads with 3pin-IEC ones had used
3pin-schuko adapters without earth, obviously neither end of the
10base2 had been earthed! We left them to it ...

My skin is an effective fault detector, but perhaps not the safest option!