There are many myths about lightning and lightning protection systems. Here are just a few to help understand more about the destructive force of lightning.
Q. All modern buildings are "grounded" and don't
need lightning protection, right?
A.
No! This refers to the electrical service being grounded and is not
adequate to handle a lightning strike.
Q. If I put lightning protection on my house,
won't it will attract lightning to the air terminals?
A.
No! Lightning rods don't attract lightning to a structure, they merely
provide it a safe path to ground in the event of a strike.
Q. Will lightning rods prevent lightning from
striking?
A.
No, just as lightning rods will not attract lightning, they will not
prevent a strike either. Nothing can prevent a lightning strike from
occurring, but you can handle it safely with a properly installed
lightning protection system.
Q. I don't need lightning rods because only tall
buildings do / my neighbors houses are much taller than my house.
A.
No! Lower roof levels and structures are just as likely to be hit as
tall objects. Lightning zigs and zags in the air looking for the lowest
resistance path to ground and won't pick its target until within 150ft
of where it will strike.
Q. Do lightning rods really work?
A.
Yes! A properly protected building can withstand a multitude of
lightning strikes. Major buildings like the Sears Tower or Empire State
Building take dozens of strikes a year and they are still standing!