Not me, but I remember about 21 years ago, a theatre carpenter was wiring up a 220 outlet for a turntable, and he somehow got the idea that you put both hots on one terminal, and the neutral on the other.. he turned on the breaker (20a), and the 400a main went 'thud', and the building went black. The police responded when the alarm went off, thinking the box office was being robbed..
