240, 1ph also has 120v to ground on each leg... If not for the phase shift, they would be the same.
I wish our normal residential power here in the US was 208, 3ph, rather than 240v, 1ph. It would allow us to be a tad more efficient.
Unlike Europe, where their 240v is one leg of 380 to ground, with our 480 to ground we have 277v. Our 240v 1ph is a center-tapped leg of a delta transformer, which is not legal in a lot of countries.
Around the mid-west, especial in rural areas, we have a lot of 460v delta power as well, which is even worse. From a safety and noise filtering standpoint anyway.
My point is, depending on where your product is going, you should probably have a test rig with the proper transformer configuration to be able to ensure safety, filtering and functionality.