Date   : Sun, 30 Oct 2005 13:56:11 -0000
From   : "David Hunt" <dm.hunt@...>
Subject: Re: Computer Museum gets cash from Gates

> -----Original Message-----
> From: Majordomo List Manager [mailto:majordomo@...] On Behalf Of
> Jonathan Graham Harston
> Sent: 30 October 2005 00:25
> To: bbc-micro@...
> Subject: [BBC-Micro] Re: Computer Museum gets cash from Gates
> 
> > Message-ID: <435D1844.2060106@...>
> 
> Jules Richardson <julesrichardsonuk@...> wrote:
> > Jonathan Graham Harston wrote:
> > > How much space do you need?
> >
> > We're aiming for somewhere around 12,000sqft - 10,000 for exhibition
> 
> That's about a magnitude more than I have access to.
> 
> > space / public archives, and 2000 as workshop / stores. (ideally already
> > with 3-phase power, we're rather over the limit of what we can do with
> > domestic mains! :)
> 
> Have you thought of using a phase tripler? Either a hunking great
> capacitor and inductor to advance and retard the phase, or a
> single phase motor driving a three-phase generator.
> 
> --
> J.G.Harston - jgh@... - mdfs.net/User/JGH
> There are three food groups: brown, green and ice cream.

A phase tripler will not increase the available power, it will merely
distribute the available power (minus overheads) over three phases. 

There is a hint in the "over the limit with domestic mains", perhaps the
quest is for more power.

A basic three phase installation I had installed a few years ago was 200A x
3, it's main recipient is a three phase motor, but the single phases can be
routed to different circuits for single phase operation as per usual. The
total sustained power is rated at 140kW - probably not enough to run Blue
Gene...

Mind you, at over 20kW - must be a fun electricity bill...

Dave ;)