Why does the power come back on for a few seconds after the power goes out?
In: Technology
There are automated breakers on power lines that will retry a couple times
If a tree branch falls and briefly bridges the power lines then the breaker will trip removing power, but then a couple seconds later it’ll try again and let power back through, if it doesn’t trip again then you just see power blink and return. If there’s a sustained fault you may see power blink 3 times and then stay off
By quickly turning off and automatically retrying the power grid can make it through minor faults without getting damaged (the breaker protects it) and without needing someone to come out and flip the breaker if the fault quickly clears
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