Stop in for a cup of coffee

Back in the Carnival days, we might have setup in a empty field. And for electricity had to run generators. We had a trailer with a transformer in it, that was set up to operate on 20K volts. We would park the trailer under the hi tension lines, and hook onto the bare wires with jumper cables!! Running into the transformer, free 24 hour power for our trailers. Worked like a charm...Never got shocked or even felt anything, BUT I used shockproof gloves...Electricity is so benign , till it is not...
I know the stop light was 3 phase but wonder what kind of voltage I was I’m guessing at least 220/240