lightning protection for trees

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Your attachment link did not work, however, I have seen many large trees with lightening protection where I live. I live in Annapolis, MD. Just last week I went on a tour of the Naval Academy grounds. The tour guide, the USNA's staff landscape architect, explained to us their tree protection method. If you've never been there, the academy has a lot of old, nice, tall trees. In order to preserve them for future generations, they'ce installed 1" copper cable to the tips of the branches (top and sides). They can either attach a special end to attract the lightning, or fray the end of the copper wire to serve the same purpose. The cabnle is attached to the tree using copper connectors. When it reaches the ground, they run it out 10-12' to a copper rod. The rod extends 10-15' straight into the ground.
 
I have installed 6 or 8 LPS. It is a servise we provide but it is a hard sell very costly for the materials. Easy to install.
 
Help me out with the idea that the copper cable atracts the Lightening. I thought that the cable presents an electrical potential equal to the ground around the tree or house so the lightening "doesn't see" the top as a place to strike. Some say the cable is their to conduct the power to the ground but to handle that amperage of a bolt the cable would have to be many feet thick. You would hope that the people hiring an arborist would also be interested in a LP system for their trees. No harm in adding that to your list of services and partner up with an experinced lisenced electrican; heck you could ever get them to protect their house too.

See you at the top with Thor's hammer in my hand,
Dan House
 
It would depend on the type of soil in the ground.
Just grounding to the earth below the tree might change the potential enough to make it attract lightning.
In reality everything should be tied together to have the same potential, that means all the utilities as well as the tree should have a common ground.
There's more to it than meets the eye.
Every case is different and each one should be engineered separately.
 

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