Power cabling advice?

From: William Donzelli <aw288_at_osfn.org>
Date: Tue Jul 29 21:03:00 2003

> However... it just ocurred to me that even though I did that, I
> still have some sort of a "connection" through the main power
> lines (3x 500VAC _at_ 48A/ea) here, so, if an old 11/23 in a BA23
> goes smokey on me, it still could kill my (quite expensive)
> production network stuff through the power system.
>
> Does anyone have (serious) ideas on how to fix this (short of
> requesting three separated power lines from the utilities.. they
> have a hard time dealing with me as it is ;-)

I think you are overreating. Keep the vintage stuff on a seperate breaker
from the production stuff. If the PDP-11/23 "goes boom", the smaller
breaker will trip first, and the other breakers, including the main one,
will still be closed and happy. The other circuits and machines may notice
a small dip in the power for a fraction of a second, but they could
probably weather it.

UPSs, surge protectors and a big old Sola isolation/regulating transformer
would also be nice, but overkill.

William Donzelli
aw288_at_osfn.org
Received on Tue Jul 29 2003 - 21:03:00 BST