cleaning out sump yesterday and i have small cut on finger , tingling when in sump . Put finger in bucket of water siphoned out of sump , no tingeling. M I thought leakage (power) so turn off all switches still tingeling , went up stairs to tank with circulation pumps running and did finger test, nothing .went down stairs still there, thought may be earth problem unpluged all plugs but tingel still there .
Any idea of were its coming from ?
next stepp would be to remove all equ but this is larger job.