Hello to you, Nathan, and welcome to the OEM forum.
A couple of things to point out if you haven’t picked them up already - OEM is UK-based (Wales to be precise) so everything we do tends to have a bias towards the UK electricity supply system. But that only means that a few things aren’t perfectly tailored to your system, and they won’t present much of a problem. We have very many users in the US.
We’ve tried to give an outline of the differences between your system and ours (in the ‘Learn’ section), and that was put together with a great deal of input from @Bill.Thomson, who is an Electronics Technician living in Oklahoma. His professional experience and knowledge should be invaluable to you.
That experience isn’t the first, unfortunately. Some years ago we helped another customer recover a significant sum from his electricity provider too: SCT-013-000 very confused! - #34 by ybizeul.
If you’re in any doubt about anything, do ask. It’s far better to ask early on than head off down the wrong route.