In the US I can guarantee there is not a 415V transformer 'nearby'. You would have the standard 480V and as a wye connection that produces 270V between each leg and neutral.
Yeah, maybe one in a million, but not impossible...
If you are looking at space in an industrial park, or an industrial condo, you might have a better chance of finding more options. If you find a place with 480V, there might be options to adjust the voltage a bit by hooking up to different taps on the transformer, but I don't think there are typically options to go all the way down to 415 from there, so not low enough for Bitmain miners.
You can also install your own transformer.