The bottom line is that if there's a way inside, lightning will find
> it. Don't forget the phone/DSL line, or for those with cable TV, that
> line as well.
Virtually all analyses done after a strike has done damage will show some
element of a properly designed and installed grounding system is not in place.
Don't forget that even if you have a whole house electrical or phone or
whatever protection in place, that will only take care of energy surges coming
from the outside lines into the house. There is a chance that your wiring
internal to the house can have energy induced into it of sufficient strength to
zap your stuff.
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