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| Author: | Cogito [ September 22nd, 2023, 4:00 pm ] |
| Post subject: | Re: Down time... |
SoundMods wrote: Roscoe Primrose wrote: brombo wrote: You found where the lightning struck. What is the white obelisk in front of the tree? The pedestal in front of the tree is where the cable transitions from hard line to RG11. What amazes me is that the tall trees didn't attract the strike. Lightning is going to what lightning wants -- what rules? Trees are wood, non-conductive material. |
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| Author: | Roscoe Primrose [ September 22nd, 2023, 4:05 pm ] |
| Post subject: | Re: Down time... |
SoundMods wrote: Roscoe Primrose wrote: brombo wrote: You found where the lightning struck. What is the white obelisk in front of the tree? The pedestal in front of the tree is where the cable transitions from hard line to RG11. What amazes me is that the tall trees didn't attract the strike. Lightning is going to what lightning wants -- what rules? Look at the tree behind the pedestal, it's missing the bark where the lightning traveled down the tree... |
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| Author: | brombo [ September 22nd, 2023, 4:26 pm ] |
| Post subject: | Re: Down time... |
If the cable transition box is plastic rather than metal (or even if it is metal) it would help to put a well grounded metal cage over it (use the grounding stakes used for TV antennas to ground the cage). |
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| Author: | ratbagp [ September 22nd, 2023, 4:40 pm ] |
| Post subject: | Re: Down time... |
Cogito wrote: Trees are wood, non-conductive material. Trees contain moisture. https://progressivetree.com/tree-struck-by-lightning/#:~:text=There%20are%202%20main%20reasons,around%20them%2C%20such%20as%20air. ray |
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| Author: | brombo [ September 22nd, 2023, 4:49 pm ] |
| Post subject: | Re: Down time... |
The following link shows what can happen when lightning hits the ground - https://en.wikipedia.org/wiki/Fulgurite |
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| Author: | tomp [ September 22nd, 2023, 5:06 pm ] |
| Post subject: | Re: Down time... |
brombo wrote: If the cable transition box is plastic rather than metal (or even if it is metal) it would help to put a well grounded metal cage over it (use the grounding stakes used for TV antennas to ground the cage). I'm not sure that would work if the mechanism of the destructive voltages is that they are induced into the wires leading into the house by the high lightning currents as they pass to ground. Stuarts suggestion of using surge protectors where the wire comes into the house is probably the best suggestion. Remember, if you get a direct lightning strike nothing is going to save your butt. |
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| Author: | SoundMods [ September 22nd, 2023, 7:03 pm ] |
| Post subject: | Re: Down time... |
The pedestal in front of the tree is where the cable transitions from hard line to RG11.[/quote] What amazes me is that the tall trees didn't attract the strike. Lightning is going to what lightning wants -- what rules? [/quote] Trees are wood, non-conductive material.[/quote] Do the math -- they're filled with water-based sap. That's why they explode when hit. The sap immediately becomes saturated steam -- then BOOM! |
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| Author: | Cogito [ September 29th, 2023, 1:49 pm ] |
| Post subject: | Re: Down time... |
ratbagp wrote: Cogito wrote: Trees are wood, non-conductive material. Trees contain moisture. https://progressivetree.com/tree-struck-by-lightning/#:~:text=There%20are%202%20main%20reasons,around%20them%2C%20such%20as%20air. ray May be I was not clear. The wood in trees is a poor conductor, a very poor conductor. From the link you posted.... a tree's water content and moisture are a better electricity conductor than the other elements around them, such as air. Only the outer most surfaces of the trucks carry nutrients to the branches and has little moisture. When the trees are soaked in rain, lightening travels along the bark, which is what happened in Roscoe's home. |
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