You'll have to build a massive rack for it to need more than a regular household 10-15A AC circuit to plug in to! :)
-- justarandomgeek
Or just have a metric fuckton of gear! The current setup I have DID require more amperage, so I had to get an electrician in to add a pair of 20A circuits. Not only that, I also picked up a cheap clamp ammeter/multimeter (Harbor Freight FTW) so that I can clamp it onto the power feed on each rack to work out a total and, once that's done, to figure out how to load the total 50A in here so that it's nice and balanced (power-wise, not balanced power which is a whole 'nother can of worms!) and free of ground loops. If you run several racks of gear, having one of those clamp ammeters is a MUST.