This is my personal opinion getting from basic information to protect equipment from lightning surge.
Home /External Lightning /Water AnalogyWater Analogy:Illustrate feature of lightning rod and behavior of lightning current using waterways and water gates.
Air termination catches lightning and lightning surge goes to the earth through down conductor.
A glass gets Pouring water and it flows to outside through glass axis. Depending upon amount of pouring water(amount of lightning) and diameter of glass axis(earth resistance), water level in the glass is different.(Earth potential)
Lightning current route is not expected and may cause of fire. External ligthing protection system makes route to go throuhg lightning current.
Again contents in this Web site is my Personal Opnion. I did my best for the contents of this site, but may have some mistakes. We applogize if such things happen. Please remember that we will Not Take Any Resposibilties, even if you take countermeasures for lighting surge following on this contents and have any damage directly on your equipment and/or some other seconday damages.Please do any lightning protection based on your own resposibilty.