Good day, We had a fully functional hot tub in our garage (don't ask).
We moved it outside on to a patio of cement patio blocks.
I tapped off the sub panel in the garage that the tube used to be hooked to. I ran 80' of #6-4 wire out to another GFCI sub panel outside the house within sight of the tub.
When I energize the breakers they both pop
I have confirmed that the common and ground are only bonded in the main panel.
If I separate them in the main panel everything works but you can get bit if you touch the water while your barefooted.
I'm attaching a diagram of what I have wired.
I'm stumped, I need some ideas please.!