Scott2828:
Welcome to ECN, first
As to your question, the "AC" ground should not have any potential, if the installation is NEC compliant.
As to the neon transformer that 'bit' you, IMHO should not exceed the rated 30Ma. One of the other guys here (Scott35) may have better info.
That all said, your profile says you are a 'sign apprentice'......why did your foreman or boss allow you to get your body into a 'live' neon enclosure???
Neon signage deserves a LOT of respect; hence the required enclosures, conduit, etc on the high voltage GTO.
BTW: Good luck & a speedy recovery
John
