Electrical Shock – Causes of Electric Shocks from Tap Water When Washing Machine is On

electricalukwashing-machine

My washing machine is placed in my kitchen and whenever it is switched on and working (washing), I get very mild “tingles” from the kitchen's tap water.
I'm in the UK, and I've checked that the wall socket is earthed and the machine's plug is also earthed. I'm not using any extension cables.
What else can I check before calling an electrician? If possible I'd like to fix this problem myself.
Thanks!

EDIT 1: My house was built on the 70s.

EDIT 2: I asked an electrician to fix the problem and he said the following: two of the earth wires were in the correct position but one had no earthing sleeve on it and was pressing on the live wire. The third earth wire was not connected at all and there was a small voltage showing, but not enough to trip the switch. He re-routed all the wires and attached the loose earth wire and all is now fine!

Best Answer

This sounds like a pretty dangerous situation. There are some things you could check.

A. Look into if the earth grounding connection at your house is good solid connection without corrosion.

B. Try seeing if you get the same tingling effect when you run a different appliance plugged into the same outlet such as a blender or toaster.

C. Check if the outlets near your kitchen sink are protected with GFCI devices.