VAX Cluster on Ebay in OK (was Re: More DEC equipment spottedin Kansas City)

From: Charles H. Dickman <chd_1_at_nktelco.net>
Date: Mon May 3 22:06:49 2004

Dwight K. Elvey wrote:

>>From: "Jay West" <jwest_at_classiccmp.org>
>>
>>
>>
>>>Why
>>>should they make computers that are so heavy?
>>>
>>>
>>Or the corrolary to that... why should they make computers that require 220
>>3-phase!
>>
>>J
>>
>>
>
>Most 3 phase is 208, not 220.
>Dwight
>
>
>
>
208 is really a 240 volt 3 phase system measured in a star
configuration. That is, measured phase to phase you get 240 volts, but
phase to neutral you get 208. Typically you don't want any neutral
current, so it is balanced around the phases in a delta configuration.

I have not looked at any 3 phase power supplies for computers, but I
would bet they are 240 volt 4 wire and don't bother with the neutral at
all, just 3 phases and a ground.

-chuck
Received on Mon May 03 2004 - 22:06:49 BST