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Re: OT: Protecting electrical equipment; was: Recommendations for a UPS?

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On 8/1/23 18:46, Nicholas Geovanis wrote:
> On Tue, Aug 1, 2023, 1:09 PM gene heskett <gheskett@shentel.net 
> <mailto:gheskett@shentel.net>> wrote:
> 
>     On 8/1/23 11:03, Nicholas Geovanis wrote:
>      > On Tue, Aug 1, 2023, 2:40 AM Michael Kjörling
>     <2695bd53d63c@ewoof.net <mailto:2695bd53d63c@ewoof.net>
>      > <mailto:2695bd53d63c@ewoof.net <mailto:2695bd53d63c@ewoof.net>>>
>     wrote:
>      >
>      >     On 31 Jul 2023 15:21 -0400, from songbird@anthive.com
>     <mailto:songbird@anthive.com>
>      >     <mailto:songbird@anthive.com <mailto:songbird@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/>

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Recommendations for a UPS? Tom Browder <tom.browder@gmail.com> - 2023-07-31 19:30 +0200
  OT: Re: Recommendations for a UPS? john doe <johndoe65534@mail.com> - 2023-07-31 19:40 +0200
    Re: OT: Re: Recommendations for a UPS? Tom Browder <tom.browder@gmail.com> - 2023-07-31 20:50 +0200
      Re: OT: Re: Recommendations for a UPS? john doe <johndoe65534@mail.com> - 2023-08-02 19:00 +0200
  Re: Recommendations for a UPS? "Russell L. Harris" <russell@rlharris.org> - 2023-07-31 19:50 +0200
    Re: OT: Recommendations for a UPS? Michael Kjörling <2695bd53d63c@ewoof.net> - 2023-07-31 20:30 +0200
  Re: Recommendations for a UPS? ghe2001 <ghe2001@protonmail.com> - 2023-07-31 20:00 +0200
  Re: Recommendations for a UPS? Roger Price <debian@rogerprice.org> - 2023-07-31 20:00 +0200
  Re: Recommendations for a UPS? Bret Busby <bret@busby.net> - 2023-07-31 20:10 +0200
  Re: Recommendations for a UPS? Jeffrey Walton <noloader@gmail.com> - 2023-07-31 20:50 +0200
    Re: Recommendations for a UPS? Bret Busby <bret@busby.net> - 2023-07-31 21:00 +0200
    Re: Recommendations for a UPS? Bret Busby <bret@busby.net> - 2023-07-31 21:00 +0200
  Re: Recommendations for a UPS? songbird <songbird@anthive.com> - 2023-07-31 21:30 +0200
    Re: OT: Protecting electrical equipment; was: Recommendations for a  UPS? Michael Kjörling <2695bd53d63c@ewoof.net> - 2023-08-01 09:50 +0200
      Re: OT: Protecting electrical equipment; was: Recommendations for a UPS? Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-08-01 17:10 +0200
        Re: OT: Protecting electrical equipment; was: Recommendations for a  UPS? gene heskett <gheskett@shentel.net> - 2023-08-01 20:10 +0200
          Re: OT: Protecting electrical equipment; was: Recommendations for a UPS? Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-08-02 00:50 +0200
            Re: OT: Protecting electrical equipment; was: Recommendations for a  UPS? gene heskett <gheskett@shentel.net> - 2023-08-02 19:10 +0200
  Re: Recommendations for a UPS? Charles Curley <charlescurley@charlescurley.com> - 2023-08-01 01:50 +0200
    Re: Recommendations for a UPS? "Roy J. Tellason, Sr." <roy@rtellason.com> - 2023-08-01 22:20 +0200
      Re: Recommendations for a UPS? Tom Browder <tom.browder@gmail.com> - 2023-08-01 23:10 +0200

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