I can't think of a specific incident like that,
but I do know
that our University uses a non-standard order of phases, and
that all the electrical contractors who come on site get a
lecture about it, for obvious reasons!
What's a "standard order of phases"? I know if you inadvertently
swap any two you potentially end up spinning the other way. For
some things this matters and for other it doesn't.
I can only assume I'm missing something obvious ...
Antonio
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Antonio Carlini arcarlini(a)iee.org