I have been around HV enough to be wary of it. It does not act like your typical 480v stuff.
It will reach out and touch you.
It will recharge the line you just shut down to nearly the same voltage it was at before you drained it.
Make sure you have the best gear available and take it slow.
Personnally, I'd hire GE or a local engineering firm with HV experience to send out a service tech.
