Re: Grand Apagon - Electricity (not) in Spain

On 2025-05-07 15:17, Don Y wrote:

On 5/7/2025 5:30 AM, Carlos E.R. wrote:

On 2025-05-07 14:09, Don Y wrote:

On 5/7/2025 4:04 AM, Carlos E.R. wrote:

On 2025-05-06 23:52, Don Y wrote:

Your splitter boxes look to me like they might be powered.

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They do, but then I found an article that describes the system and it is optical, passive. GPON.

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The fallacy, of course, is that anything between you and where you
want to "go" that is NOT powered limits your reach.

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I couldn't test, my own UPS failed too soon.

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I suspect it would be hard to get a definitive answer.
Can you get out of the city?  "State"?  Country?  etc.
Without knowing the extent of an outage -- and the
reliance on power that exists for each step up the
ladder -- it would be hard to generalize your capabilities
from "simple tests".
>
Much like me having carrier doesn't tell me the extent of
my "reach", here.

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Well, the power outage was "total". :-D

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Yeah, but you don't know which services (up the chain) may
have their own *local*/private backup systems.  E.g., I doubt
your hospitals were without power (?)  The extent of backup
beyond that would be something you'd have to know, in advance.

 If the fibre goes direct to the exchange, they had backup power. However, if the distance is great and they have to reconstruct the signal with some kind of optical amplifier, then I don't know. The distance is about 2.5 Km.

 My mobile phone worked all the day, I could send and receive whatsapp messages.
 I have a small computer doing server things, and it tried to email me as soon as the UPS said it was running on battery. That email did not reach me till the power came back; this could be that the fibre went OOS, or that the UPS at my router went down instantly. I do not know.
 I'm considering replacing the UPS at my router. Some UPS "destroy" the battery too fast.