Yours is the water heater tank types, not the regular one.

You have current on the tap head - possible causes is you have some wiring work done and neutral and earth wiring got connected wrongly or wiring have issues. Better get a technician to check it ASAP.

Edit : Saw TS found the root cause at post #15. I replied immediately because of the severity of the issue. Glad that you found it.

This post has been edited by AbbyCom: Jul 21 2022, 11:09 AM