SURVEY: Powering big iron in your home.

From: Robert Schaefer <rschaefe_at_gcfn.org>
Date: Tue Jun 4 19:25:19 2002

----- Original Message -----
From: "Gunther Schadow" <gunther_at_aurora.regenstrief.org>
To: <cctalk_at_classiccmp.org>
Sent: Tuesday, June 04, 2002 07:48 PM
Subject: SURVEY: Powering big iron in your home.

<big snip>

> I'm really interested in hearing how others with minis do it. (If you
> don't have a mini yourself but want to teach the dangers of electricity
> and the demands of the NEC, please hold off for 10 days, O.K.?) Any
> good or bad example is welcome.

Ok, but your ten days start now... ^_^

I have a converted VAX 6320 in the basement, along with a TU81+. Both are
connected via twistlock cord ends on the original cords to dedicated
circuits. Currently (pun intended) it's just two pieces of 10/3 romex, but
eventually it'll be THHN in raceway, after I finalize the locations. The
wiring to the VAX is protected by a 2 pole 20A breaker, and the TU81+ by a
single pole 30A. The immediate plans include a 15A circuit to plug the new
rack into, and longer-term plans include a ~100A subpanel with an isolation
transformer. My company is currently in the process of decommissioning a
20KW 480/277V generator. If I can rewire that to 208/120V it might just end
up comming home with me to live. That and a small UPS will make me totally
independant of the power grid!

Oh, hang on... The RA92 is plugged in to the top of the two externally
available IEC plugs, just above the power cord, and fused at 10A. Perhaps
Field Circus was out of 10A fuses, and it was replaced with an
identical-sized 2A fuse? :)

>
> regards,
> -Gunther

Bob
Received on Tue Jun 04 2002 - 19:25:19 BST