Quote:
Originally Posted by villagetinker
I would like to see a discussion of lightning protection (sharp pointy objects) on your roof, versus the devices SECO uses at some of their substations, these look like a large Dandelion bloom. I worked in this industry and these are designed to DISSIPATE the charge and avoid the lightning strike. Sharpe pointed objects then at ATTRACT lightning strikes. These are applied to ATTRACT the strike to the protective wiring and away from the roof. May point is why not have the devices that dissipate the charge installed?
Looking forward to an interesting discussion.
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The national standard on lightning that has been adopted by many states and federal government entities only recognizes tradition lighting systems as addressed in NFPA-780, Standard for the Installation of Lightning Protection Systems, 2023 Edition. Non-standard systems based on early streamer, charge transfer, and dissipating array concepts are not recognized. As discussed in Dr. Martin Unman's book The Art and Science of Lightning Protection. there is no evidence that non-standard systems work as advertised.