On 8/1/23 18:46, Nicholas Geovanis wrote:
On Tue, Aug 1, 2023, 1:09 PM gene heskett <ghesk...@shentel.net
<mailto:ghesk...@shentel.net>> wrote:
On 8/1/23 11:03, Nicholas Geovanis wrote:
> On Tue, Aug 1, 2023, 2:40 AM Michael Kjörling
<2695bd53d...@ewoof.net <mailto:2695bd53d...@ewoof.net>
> <mailto:2695bd53d...@ewoof.net <mailto:2695bd53d...@ewoof.net>>>
wrote:
>
> On 31 Jul 2023 15:21 -0400, from songb...@anthive.com
<mailto:songb...@anthive.com>
> <mailto:songb...@anthive.com <mailto:songb...@anthive.com>>
(songbird):
> > i do not run things for long when the power goes out
> > but the capacity for my needs is plenty and then i shut
> > down in an orderly fashion. most of the time i shut down
> > the computer system and unplug the power cord and the
> > network cables and antenna cables if there is a storm
> > coming through - just out of the idea that i don't really
> > want things to get fried.
>
I replaced the original 60 amp service in 2008 with a 200, and brought
this grandfathered 2970 house service up to code, doing all the
internal
work myself. I have a big ups running everything but the lights and
printers in this room, got rid of the copper telephone because the
cable
was 70 years old, 50 pair paper insulated cable they would not keep
working for a week at a time, so after 5 months of that I voted with my
wallet and hooked all that up to the cable system. I must have done
something right, I have not even blown a ccfl light bulb since and it
all runs 24/7/365.25.
In your case then, you may need to pay attention to transients in your
cabling plant. Everytime a large motor starts, revs or stops, those
transients are hitting your cabling. My recollection is that you have
machine tools in addition to electronics and climate control. Even more
so then. Also grounding for your electrical system has to be proven
over-adequate. And any possible ground-loops need to be found and
remediated.
This is true also, but I am a C.E.T. and learned decades ago that
electrical grounds ack the NEC are specced from their experience based
on what works, and to wire logical circuits with a single bolt star
ground. I do appreciate the concern, Nic. Call it evangelizing,
whatever, but it does need an occasional sermon to the non-electrical
types out there. I've long ago quit counting the number of electrical
problems I have corrected, created by folks carrying Journeymen cards in
their billfold. And STILL can't tell the diff between the Neutral and
the static ground. I've long since given up trying to teach them about
multiphase power. Most know enough to interchange any two wires feeding
a 3 phase motor if it runs backwards. The "Why"+ it runs backwards is
above their pay grade.
> It's worth mentioning that with a good UPS you get
power-conditioning,
> not just filtering and over/under-voltage protection. That can
extend
> the lifetime of any electric motor or other device using the
conditioned
> power. The UPS emits a controlled waveform beyond what your
utility can
> provide.
>
> And numerous datacenters have begun using DC-powered racks. Less
power
> loss in the individual transformers and motors in each racked
server,
> less heat to be expelled.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
