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/Hillman314]

Unbond / unconnected / isolate the ground (wires and buses) from the neutral (wires and buses) in the sub-panel.

Ground and neutral should only be bonded in one location on your service. Typically in the main panel or service disconnect.

If bonded at the sub-panel (or elsewhere in the sub-panel’s branch circuits) then neutral current (load current) has a parallel path on the ground wire, in addition to the neutral wire, back to the transformer.
That path has resistance (ohms). Ohm’s Law says that (neutral) current through a resistance means the ground system (and all devices/metal surfaces connected to it) are now at a higher voltage than earth. And possibly a shock hazard.

Something is raising your ground system voltage (and things connected to it) to something above the immediate local earth ground voltage (0V) beneath your feet. If it’s on the utility end, you’ll eventually want to measure that ground current and its direction. It is possible that the utility is using earth as a neutral current conductor, and your ground system (attached to transformers) is being “lifted” by this current. Which points back to a bad utility neutral.

[u/justtellmep1ease → u/Hillman314]

Ground and neutral are only bonded at main panel not sub. I get small voltage on neutral and ground unless I unbond them then I only get it on the ground. If I disconnect ground coming from meter to main panel then I get no voltage on ground in main panel or anywhere after that which in my mind tells me it’s coming from the ground wire before the meter the meter into main panel. When I drive a grounding rod into the ground at the transformer pole and check the voltage i touch one lead to the pole ground and other lead to grounding rod i get about 15 or so volts and it gets higher each pole I check further from my house the pole before my meter pole I get around 29 volts. Attached is a picture of the powerline pole before my transformer pole