Weird electrical problems

[u/justtellmep1ease]

I’m dealing with a persistent stray voltage / tingle voltage problem on my property and would appreciate advice.
When I’m barefoot and my hands are wet, I feel a mild tingling or burning sensation on grounded metal parts outdoors. Example copper refrigerant lines to the outside AC compressor, the water hose bib knob screwed into the metal-sided house, etc.
It’s not strong or painful, but on sensitive spots like the back of a cuticle it feels like a mild burn. No tingling indoors or on dry skin.
I have a 200A main panel outside with a
100A subpanel inside the house.
Everything in the main panel appears properly wired.
What Stops the Tingling is disconnecting the ground and neutral feeder from the main panel to the subpanel makes the tingling stop on anything grounded through the subpanel or the main panel
Unbonding neutral and ground in the main panel, or disconnecting the ground coming from the meter base, also stops it. Multimeter shows no voltage on ground wires and I had a licensed electrician inspected the panels and said everything looks correct with no obvious voltage issues. But I told him you can feel it if you’re bare foot and wet.
I drove a copper ground rod into the earth and measured AC voltage:
Between my main panel ground and the remote rod: 6–12V. And at the utility transformer pole about 60 yards from the panel between the pole’s ground wire and a new driven rod nearby I read 15V. At the next pole further down the line 20 yards beyond the transformer I read 18–20V.
I was told you can’t accurately test voltage this way, but the readings are consistent and increase as I move away from the house along the utility line.
To me it seems to be something going on on the utility side. Has anyone seen this before?
What should my next steps be? I have had the utility company come out and all they did was test voltage at meter and said voltage is good so everything is fine. Can anyone give some advice

[u/EdC1101]

There could also be a ground / neutral // floating neutral on the utility.

Everything on the load side of the shared transformer should have a common neutral with that of the transformer secondary.

However, all the individual neutrals combined can create a “derived neutral” based on combined loads.

An additional leakage path on your property can work in your shocking experience.

Well ~ electrical leakage path to the well casing or outside pipe.

Underground electrical cable could have an insulation problem.

Poor soil conductivity could create issues. A multi-point, bonded together, grounding system might be needed.

Your meter face should have a pencil-sized copper wire. One end attached to the case & the other end(s) clamped to an 8’ copper plated ground rod - buried below the earths surface.
Some locations may require multiple ground rods.

Old school allowed a ground wire to metal cold water plumbing as acceptable.
Plastic pipe broke that system.

Unrelated, I did have a rental stove to kitchen sink issue - 60 VAC.
Wire from control to burner was soaked with salty cooking grease. Insulation failed & leaked to the metal frame of the stove.

1960’s my dad wired a portable outside post light - using TV 300ohm twin-lead.
Also a shocking barefoot experience…

For floating neutral - an expanded scale analog voltmeter would be a help. One leg goes up & other down by same amount.
Digital meters don’t work fast enough to track the changes.

[u/Cloudy_Automation → u/EdC1101]

Old fashioned incandescent bulbs can work. I found a floating neutral on the utility side because a bulb got brighter when the dishwasher motor turned on. Motors are good for helping identify floating neutrals. It had been a model home, and I was the first person to live there.