Lightning protection for site/roadway poles-what works?

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Lot's of great info.:)
So in the OP they mention 35'-40' light poles, do they require any type of lightning protection or is this solely a design issue?
 
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I don't believe that a well grounded lightning rod on the top of a metal pole will have significantly different performance than a well grounded metal pole.
 
bphgravity said:
Annex B, section .3 in part states, ?Air terminals placed upon a structure do not substantially increase the probability of the structure being struck by lightning. If the downward progressing lightning leader is close to the structure, it will probably attach to that structure anyway. Thus, air terminals are designed to provide a preferential attachment point on structures that already provide a likely lightning attachment point. Once lightning connects to the air terminal, it is easier to control the lightning current and direct it to the earth, as opposed to it taking a random, uncontrolled (and usually damaging) path through the structure otherwise.?

So that is that?
Click to expand...

Just highlighted some points in your quote to indicate that is included in the Annnex, so it is not part of the standard, it is just a reference. The other highlighted weasel-words clearly indicate that even though it is information included as reference, there is still so much unsettled and uncertain that they can not be stated with certainty. The last sentence is the most telling and states an uncertainty followed up by a non-sequitur.

BTW if a nuclear chain reaction can be studied by supercomputer simulation, making nuclear tests unnecessary, you can bet your bubkes that so can lightning, but somebody still needs to put up the $'s to make it hapen. There is simply no payback, so scientist will find no financial support for this undoubtedly enormous undertaking.
 
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