Reply To: Lightningrod

The following link gives some information

http://www.cdc.gov/nasd/docs/d000001-d000100/d000007/d000007.html

One thing I do recall from a lecture I once went to on lightning rods was that it is not just the resistance of the path to ground that is important but, because the rate of rise of the lightning current is very high, the inductance of the path needs to be kept to a minimum. This means keeping the path as straight as possible and with all bends kept to maximum possible radius (sharp bends as one sometimes sees in lightning conductor installations are apparently very bad). The article I linked mentions a minimum radius of 8 inches.