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How to Install Whole-House Lightning Protection | Ask This Old House

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BathroomPlumbing and insulation
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“Meteorologist Jim Cantore discusses lightning with Ask This Old House host Kevin O’Connor. Then landscape contractor Roger Cook travels to central Florida to install a lightning protection system.
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Homeowners have a virtual truckload of questions for us on smaller projects, and we’re ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Install Whole-House Lightning Protection | Ask This Old House
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  5. This really is a controversial subject. I would never install lightning rods on my house. A charge of electricity in the clouds is looking for a path of least resistance to discharge. This is usually the earth. when you install a lighting rod you have just moved the earth potential to the top of your house actually making it more likely to get hit by lightning. The argument is ya but it carries the lightning to the ground. My question is do you really want that much power going through your house and hope that everything works correctly. In addition that much power can damage your electronics without even touching it just from the amount of energy in the air from the lightning. As a retired TV repair technician, I have seen the destruction it causes to electronics. It's just a bad idea that for the most part went out over 100 years ago.

  8. That coupler connecting the 2 grounds rods is a very poor high resistance connection. It will cetainly corrode over time and be useless. Also bringing lightning in the home and straping the very wire that carries high voltage and current against dry wood is probably not the best idea.

    The never mentioned anything about ground potential. Those ground rods per NEC have to be wired together with the electric panel ground or this set up will do more damage then good. I see several possible major issues with this setup.

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