A fully loaded C7000 chassis could draw between 12,000 and 15,000 watts. This is not a residential or office load, it is a commercial data center load using dedicated branch wiring.This also means a very significant heat load. I would suggest that you consult with a data center specialist who can properly size all the circuits, the UPS and air conditioning.
Specs that you need are:
Quickspecs: http://www8.hp.com/h20195/v2/GetPDF.aspx/c04128339.pdf
Installation: http://www.hp.com/ctg/Manual/c00698286.pdf
