The power requirement was stated as being 2500W (it still is on the website). The input rating is specced at 90-264VAC. Clearly a 15A/120V circuit (2 of them) would be sufficient to run this device and people have made purchasing decisions based on this.
Now Spondoolies has announced that the power spec has changed to 3000W. It was never 3000W; it was 2500W up to this point. Two 15A/120V circuits are no longer sufficient to run it; they cannot sustain 3000W.
The power supplies they announced that they'll use are Emerson and Murata. Emerson is 1500W max at the wall. Murata is a little over 1600W max at the wall. Since the units were designed with 2 power supplies, you do the math.
I'm not sure you understand what I am saying. The maximum possible power draw of a power supply is irrelevant. What is relevant is that the SP30 has been advertised as requiring 2500W. Now it turns out it needs 3000W. It is the difference between being able run one, and not. People with access to 220V should be fine, but those limited to 120V won't be. And 220V was never stated to be a requirement; not in the product specs on the Spondoolies website.
If you are under the impression that Spondoolies customers should rely on bitcointalk.org, rather than
http://www.spondoolies-tech.com/, you are mistaken.