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Thread: Power Outage During Storm

  1. #1
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    Power Outage During Storm

    What exactly happens during a lightning storm that causes the power to go out but usually comes back on in a few seconds to a minute?
    If you aim at nothing, you will hit it every time!

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    Quote Originally Posted by Little Bill View Post
    What exactly happens during a lightning storm that causes the power to go out but usually comes back on in a few seconds to a minute?
    Usually, a handy-dandy programmable self-resetting device called a recloser.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

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    So what makes the recloser shut off initially? Does it sense a surge?
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

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    Quote Originally Posted by LarryFine View Post
    Usually, a handy-dandy programmable self-resetting device called a recloser.
    At a substation?
    If you aim at nothing, you will hit it every time!

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    Quote Originally Posted by Little Bill View Post
    At a substation?

    I believe at the pole or transformer
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    Spark arresters (sp?) are on the power poles. Reclosers are at the substation.
    If you don't think too good, don't think too much.

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    Quote Originally Posted by ActionDave View Post
    Spark arresters (sp?) are on the power poles. Reclosers are at the substation.

    From Eaton https://www.eaton.com/content/dam/ea...td280027en.pdf

    Reclosers are used throughout the power distribution system,from the substation to residential utility poles. They range fromsmall reclosers (Figure 1) for use on singlephase power lines, tolarger three-phase reclosers (Figure 2) used in substations and onhigh-voltage power lines up to 38,000 volts
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



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    Reclosers are used throughout the power distribution system,from the substation to residential utility poles. They range fromsmall reclosers (Figure 1) for use on singlephase power lines, tolarger three-phase reclosers (Figure 2) used in substations and onhigh-voltage power lines up to 38,000 volts
    Interesting. It's the latter that I am aware of. My boss set one off one evening due to a misadventure at the municipal water treatment plant.
    If you don't think too good, don't think too much.

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    Quote Originally Posted by Little Bill View Post
    At a substation?
    They are at substations as well as various points throughout the distribution system.

    By placing them throughout the system, when a fault occurs that doesn't get cleared happens it isolates a section of the circuit rather than the entire circuit being down. Substations out here usually have one recloser per circuit leaving the substation. In rural areas the main trunk of the circuit may not have many reclosers on it, but will have one near the tap to each major branch off that main trunk.

    If you only had one at the source, every time something happens the entire circuit would be down and there would be that much more line to have to investigate to find the problem.
    I live for today, I'm just a day behind.

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    Quote Originally Posted by Little Bill View Post
    What exactly happens during a lightning storm that causes the power to go out but usually comes back on in a few seconds to a minute?
    Auto reclosing.


    And in some cases rewiring of the system after lockout (reclose attempts made and none of them held):


    https://www.youtube.com/watch?v=2VGs7FdrSIE

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