nanog mailing list archives
Re: home router battery backup
From: Mark Tinka <mark@tinka.africa>
Date: Thu, 13 Jan 2022 17:22:50 +0200
On 1/13/22 17:15, Andy Ringsmuth wrote:
The power company said the rotating outages would be 30-45 minutes, which I do have UPS capacity to handle. But the rotating outage went close to 2 hours, exhausting my UPS capacity and getting to the point where I was more concerned about the temperature in the building.
Having had extensive experience with load shedding growing up this side of the world (sadly), the outage period announced by the power company may or may not include the time required to re-energize the affected areas.
So when they say 30 - 45 minutes, you should ask them if that includes or excludes the time allowance for re-energizing.
In South Africa, load shedding can be announced as 2hrs or 4hrs. However, the schedule will be printed as 2.5hrs or 4.5hrs, with those extra 30 minutes added to allow for engineers to re-energize neighborhoods.
Also, transformers and distribution switching gear is not designed to be operated in an on/off fashion. So things can go wrong when neighborhoods are re-energized, e.g., trips from downstream customer surge overloads, downstream transformers that trip and cascade, e.t.c.
Mark.
Current thread:
- RE: home router battery backup, (continued)
- RE: home router battery backup Ryland Kremeier (Jan 13)
- RE: home router battery backup Jay (Jan 13)
- Re: home router battery backup Aaron C. de Bruyn via NANOG (Jan 13)
- Re: home router battery backup Mark Tinka (Jan 13)
- Re: home router battery backup Michael Thomas (Jan 14)
- Re: home router battery backup Mark Tinka (Jan 14)
- Re: home router battery backup Mark Tinka (Jan 13)
- Re: home router battery backup Jordan Hazen (Jan 18)
- Re: home router battery backup Mark Tinka (Jan 13)
- Re: home router battery backup Andy Ringsmuth (Jan 13)
- Re: home router battery backup Mark Tinka (Jan 13)
- Re: home router battery backup Andy Ringsmuth (Jan 13)
- Re: home router battery backup Mark Tinka (Jan 13)
- Re: home router battery backup Michael Thomas (Jan 13)
- Re: home router battery backup Jeff Shultz (Jan 17)
- Re: home router battery backup Aaron C. de Bruyn via NANOG (Jan 17)
- Re: home router battery backup Grant Taylor via NANOG (Jan 17)
- Re: home router battery backup Jordan (Jan 18)
- Re: home router battery backup Michael Thomas (Jan 17)
- Re: home router battery backup Jeff Shultz (Jan 17)
- Re: home router battery backup Grant Taylor via NANOG (Jan 18)