Lightning Strike Protection

SIKSUKR · 06-23-2017, 01:26 PM

Quote:

Originally Posted by Biggd

How about a flag pole? I don't have this problem but maybe a 30' flag pole will take the hit and save the house. Just a thought, and you can be patriotic while protecting your home. My next door neighbor in Mass has a flag pole in his yard and that was struck by lighting a few years ago. '

Doubt it.Sounds like his house and immediate surroundings didn't show any signs of a strike.I'll bet it came under or along the ground.

Slickcraft · 06-23-2017, 02:57 PM

Sorry to hear about all the damage

Ok, a time varying electromagnetic field can induce current in a nearby conductor. That is how AC motors and transformers work. Even far away EM sources can induce small current hence we have broadcast radio, TV and cell phones. A current is induced in the receiving antenna, amplified and the information is recovered. Wireless communication as they say.

A lightning strike is a time varying EM field of huge proportions, very intense and capable on inducing a very large flow of current in any nearby conductors. A strike far away may send a surge down the power lines and cable lines and surge protectors may protect your electronics. What about a nearby strike?

A strike near your house can induce very large current in any conductive material. House wiring for electric or cable are good antennas and an underground dog fence is a perfect antenna as well as wiring to a driveway gate. This kind of surge does not come in via power lines but is induced or generated right within the local conductive wiring. Little or nothing can be done to stop it.

http://www.sto-p.com/pfp/pfp-iemf.htm

Alan

06-23-2017, 02:57 PM	#2
Slickcraft Senior Member Join Date: Mar 2008 Location: Welch Island and The Taylor Community Posts: 3,317 Thanks: 1,232 Thanked 2,103 Times in 960 Posts	Sorry to hear about all the damage Ok, a time varying electromagnetic field can induce current in a nearby conductor. That is how AC motors and transformers work. Even far away EM sources can induce small current hence we have broadcast radio, TV and cell phones. A current is induced in the receiving antenna, amplified and the information is recovered. Wireless communication as they say. A lightning strike is a time varying EM field of huge proportions, very intense and capable on inducing a very large flow of current in any nearby conductors. A strike far away may send a surge down the power lines and cable lines and surge protectors may protect your electronics. What about a nearby strike? A strike near your house can induce very large current in any conductive material. House wiring for electric or cable are good antennas and an underground dog fence is a perfect antenna as well as wiring to a driveway gate. This kind of surge does not come in via power lines but is induced or generated right within the local conductive wiring. Little or nothing can be done to stop it. http://www.sto-p.com/pfp/pfp-iemf.htm Alan Last edited by Slickcraft; 06-23-2017 at 05:09 PM.

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