I recently purchased a used computer server on Ebay and it shipped with a 20amp power cord (one of the prongs is horizontal). However, a sticker on the back of the unit states that the unit is 100-127 V, 11.0 A. Given the 11.0 A rating, is it safe to plug this unit into a 15 amp circuit? Also, the power supply is rated at 900 Watts. Given the high power demand, would it be prudent to place this device on its own circuit? Again, this dedicated circuit could be rated at either 15 or 20 amps, correct? Thanks for your help.

If Conduit is run(not romex), I would pull a pair of #12's to Electrical Panel, and install a 20 Amp Receptacle.