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List:       classiccmp
Subject:    Re: Electric And AC Sizing For New Building Housing PDP-8s and PDP-11s
From:       Paul Koning <paulkoning () comcast ! net>
Date:       2014-06-19 0:39:39
Message-ID: 8DCF1C8E-63C8-4CC4-AEA0-5D9F7A69CD03 () comcast ! net
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On Jun 18, 2014, at 4:44 PM, Sean Caron <scaron@umich.edu> wrote:

> Hi Todd,
> 
> Do you need three-phase? Depending on where you are, you may have a hard
> time talking your PoCo into running three-phase to a private residence. If
> you have a lot of three-phase gear, might be better to rent some old
> industrial space or something ;) You also have the option of phase
> converters and MG sets like the home machine shop folks but those can get
> pricey.

Rotary converters are effective but pricy.  Solid state variable frequency motor \
controllers (basic ones) are a lot more economical.  They will do for a few kW of \
3-phase power.  They will also serve if you need a different frequency — not usually \
a consideration but it matters if you have an old Cyber, or possibly some military \
surplus gear.

	paul


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