| Re: Energy saving better than alternative energy. |
|
 |
|
 |
|
 |
|
 |
Group: uk.transport · Group Profile
Author: John WrightJohn Wright Date: Sep 11, 2008 10:05
Conor wrote:
> In article <1in2bss.1kza1lu104zslsN%%%%steve%%@ malloc.co.uk>, Steve Firth
> says... >> Conor hotmail.com> wrote:
>>>>> In article <1in1uc1.1cr20pc1ijmtd1N%%%%steve%%@ malloc.co.uk>, Steve Firth
>>> says...
>>> >>>>> Where did the 400V come from, the magical voltage pixie?
>>>> Thanks for confirming that you've never worked in a DC.
>>>>
>>> Who said I did? I merely stated I'd installed some kit in one.
>>> Admittedly, it was about 5 years ago.
>> Even five years ago, 400V between rows was standard. It comes as a free
>> gift from the three-phase fairy.
>>
> Don't know of much IT kit which is 3 phase.
All IT stuff runs on low(ish) voltage DC these days, so whatever the
power supply takes from the mains determines whether it will be 3 phase
or not. Since most IT stuff is less than a large number of kW it will
almost always be single phase.
The highest voltage you will find in any IT stuff is around 15 volts DC.
--
John Wright
"What would happen if you eliminated the autism genes from the gene pool?
You would have a bunch of people standing around in a cave, chatting and
socialising and not getting anything done!" - Professor Temple Grandin
| 
