You're adding apples and oranges and getting a fruit salad...

You can't add up the output of the PSU, 60V or so DC, add it to the spindle (AC power) and get an answer that makes any sense! Actual input current to the PSU will not be more than about 2A, and the spindle will only draw 2.2KW/8A when it is working really flat out, which means pretty much never. The problem is usually that when the PSU switches on, it takes a big inrush current until capacitors are charged and sometimes this trips breakers. However, I don't think that your machine is going to be anywhere near the limit, and most people run machines like this off a single 13A socket with no problems, so don't worry too much about it.

The 1.5kW air-cooled spindle will probably be quite a bit quieter than a standard router, but not as quiet as a water-cooled version.