On Mon, 27 Feb 2012, Luke S. Crawford wrote:
I mean, this is at data centers that can handle north of 10Kw of load
per rack. It just seems weird to me that I should get 5 20a 120v
circuits rather than a smaller number of 3 phase.
Am I missing something? or are data centers charging you the least
for the power that costs them the most (in terms of efficency) -
I guess it could be that the weirdness of having 'different' power is
a bigger deal than any efficency gains; I have not, in fact, quantified
these efficency gains, they could be quite small.
The answer is, because they can, sadly. And yes, it's really silly of them.
You do get a small efficiency by running your PC at 208V, and they get a
bigger efficiency gain by supplying you power at 208V instead of 120V as
well
as the reduced cost for the wiring. They may be using it as a
disincentive because
at 208V on the same circuit you could potentially use up twice as much
power in a given
rack and they don't have a cooling infrastructure to handle it.
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