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Originally Posted by Altavia
Very interesting, 16 homes over how many years?
Did these protected home have any induced damage from the EMP?
You probably have better data. But assuming 70,000 homes in the Villages, and 7 home strikes a year, risk is in the 1/10,000 range?
Appreciate the knowledge you are sharing.
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The data on the 16 homes with an LPS that believe they were hit is from 2007 to current. The homes all had surge protection to varying degrees. Some had no damage and some had some minor induced surge damage. Surge protection is not 100% and if the induced surge is large enough it can overwhelm the protection devices which is why a layered system gives you a better chance of surviving an significant event. What we have found is when a homeowner installs a lightning protection system they almost always spend the extra money to get Primary and Secondary surge protection. A reputable LPS installer will always evaluate your electrical system and recommend surge protection devices as needed even though they don't do that work.
As far as how many strikes per year in the Villages, Len has the latest data from the fire department and i'll ask him to post it. Its actually more than you would think because some strikes are mis-coded by the fire department and are listed as some other cause even though there were eye witnesses and other indications that the cause was lightning. Also with all the new building going on in the Villages, there are more habitable targets to hit where as before a strike might have been in an open field.