Posted by Janicholson on November 09, 2019 at 05:19:36 from (24.240.46.228):
In Reply to: Overhead Powerlines posted by stroby on November 09, 2019 at 04:51:42:
It takes a dramatic voltage to jump an inch. (in the area of 15,000 volts in dry air) Think of a spark plug wire to block distance. Most coils can make 20,000 and jump inside the cap at about 1/2 inch from the block. Once an arc is started the air, and exploded metal particles from the conductors create an ionized path that sustains the arc for far more distance than needed to start it. Most intermediate power lines carry between 3000 and 6000 volts AC (which is much higher peak voltage than that) ~6000 volts AC has a peak voltage of ~8555. So in reality clearing local lines that are allowed to be at ~16 feet above the road surface are pretty safe unless hit. Don't go there though, there be dragons. Jim
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Today's Featured Article - A Lifetime of David Brown Tractors - by Samuel Kennedy. I was born in 1950 and reared on my family�s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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