Thomas
Epic Contributor
- Joined
- Apr 6, 2000
- Messages
- 31,261
- Location
- Lebanon,NH.
- Tractor
- Kubota B2650HSD w/Frontloader & CC LTX1046 & Craftman T2200 lawn mower.
Dang
Glad every one okay.
Sorry to hear this. Lightning can be really scary. I've never seen a direct hit on my land, but I've been close enough to see the flash and only count to two before hearing it. I'm told the rule of thumb is that if you can count to five, you are in danger!!!
Client of mine in the city of Tyler was at work when a storm came through and her pine trees where struck. It cut a strip through the bark of tree up high, wound its way around, jumped to other trees and then hit her lawn. She came home to no electronics in her house. TV, computer, phone, appliances and just about everything else plugged into an outlet where all fried. A buddy of mine who is a Master Electrician came out and looked over the wiring. Half a dozen breakers where ruined, but he couldn't find any damaged wiring. He thinks the electricity traveled across the wet grass 50 feet to her natural gas pipe, and came into the house there. Then it found her ground wire, and entered her breaker box. The burn marks in the box are all off of the main ground wire.
Friends have said that they heard it hit almost a mile away.
I honestly had no idea that lightning would travel that far from a hit and cause so much damage.
The "lucky" part is that nobody was near the tree or shed when the strike occurred. From what I can tell - I've had three strikes here on the property. One I know of and two others. Long gouges up the tallest pines tell the story.
Then there was a FLASH of WHITE light the likes of which I had never seen before. :shocked::confused3:
Twas a flash of lightning that hit the Red Oak I would have been standing under splitting firewood. :shocked::shocked::shocked:
Bark blew a good 100 feet from the tree.
Not sure I would have survived if I had been splitting wood that day.
Later,
Dan
Strange as it sounds, your survival may of depended on how far apart you keep you feet when splitting wood, or which direction you are facing.
Let's say that when struck, the base of the tree became energized to 20,000 volts, 5' away the ground is 15,000 volts, 10' at 10,000 volts, etc..., that is for every foot away the tree, the difference in voltage on the ground is 1000V. (imagine concentric circles around the tree representing different voltage levels) In this example, if you have your feet 1' apart such that your standing across 1000 volts, the lightning will use you as a better conductor than the dirt, however if you turn 90 degrees, or have your feet together, your like a bird on a power line and may not get injured.
This is why cattle and horses are more susceptible from tree strikes, because their legs are so far apart that the voltage difference of the ground from their front legs to back is greater.
It may be more likely that instead of traveling through the ground for a mile and "raising" her ground (earth) voltage to a damaging level, that the lightning hit a power line a mile away and had a good power line (low resistance) conductor to enter her house through her utility service as it was "looking" for ground. It probably found the ground in her panelboard (thus) the marks, meanwhile it raised the voltage on her circuits to a level where it fried her breakers and electronics plugged into them. :2cents:
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