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Whenever we set up spas at the boat and home shows, everyone sticking their fingers in the water gets a static electricity discharge. Sounds like that's all it is.Term
So is this a HS thing? I've never heard of static charge from water. I thought static discharge was only in dry conditions. :-?
One meter probe on the Hot Tub's earth ground wire and then place the other probe in the water.
With out seeing the home and hot tub set up I would guess there is a problem in the homes wiring. Something is bleeding voltage to ground somewhere. I think its safe to rule out the hot tub as the culprit due to its GFCI connection. I would definitely get the electrician back to look at the homes wiring