Re: 240v 60Hz...
"That's a funny spec... I don't think that's standard for anyone.
Most of the world uses 220-230v, and IIRC, 50Hz is more common than 60Hz.
The USA being the big 60Hz fan, although I'd have thought they'd be terrified of the idea of the 240 volts."
I think the Americans have some weird thing they do when they want to wire up a cooker or other high usage device to the mains. It's some cross wiring between 2 phases at that junction box. Seemed a bit of a kludge to me but apparently it's what they use when they don't want full 3ph but do want high power.
Like maybe a small server farm?