I'm getting ready to move some equipment to a data center and they are asking for a maximum power draw that my equipment would have so that they can install the appropriate circuit breakers for my server rack. Though they gave me a general equation to use to estimate the maximum watts for each unit, my math just doesn't seem to match what Dell has on some of their tech specs pages.

The equation they gave me was "volts X amps = watts". That in mind I calculated that a Dell PowerConnect 5448 should have a maximum wattage of 375 watts at 208 volts and 1.8 amps.

This though doesn't match what Dell states about the power supply on their tech specs page for the unit. The maximum should be "75 watts"? Can someone tell me what the correct maximum is and how to math it out myself?