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lightning

  1. NEC Code Forum
    According to NEC NFPA-30 Is lightning Air Terminals and lightning conductors required to be tied with building ground grid? What is the acceptable ground resistance for lightning protection per code?
  2. New Member Introductions
    For a typical gas station lightning protection system made of multiple Air terminals tied with copper lightning protection conductor on the top of Canopy down to ground rods buried in the ground what is NFPA-30 Hazardous substance facility design requirement. Should the lightning protection...
  3. Residential Electrical Forum
    Got a call from a customer who reported that lightning struck his house. The strike blew three feet off his brick chimney, tripped four breakers and all the GFCI's in the house and smoked a couple of TVs'. His wife was in the kitchen when it hit and said that sparks shot out of the...
  4. NEC Code Forum
    I am currently caught in between 2 difference schools of thoughts regarding if Lightning ground should be bonded to Building's bond, the scenarios are explained below and would like an explanation of basis why there are differing standards existing. I have just been appointed to oversee Fiber...
  5. Business, Marketing, and Sales
    Does anyone have any experience with Lightning protections systems. I'm looking beyond the point of service surge protections. I'm talking about rods and the big braided wire. I've been researching LPI and UL certification, but it all seems pretty cryptic. I realize it's a hard industry to...
  6. Residential Electrical Forum
    I was on a roof the other day hooking up the riser when I was struck by all of the lighting rods in the area. Some of them were pretty beat up and bent. Always a fan of new revenue streams, I've been searching for classes, books, certifications, etc and can't really find too much. Does anyone...
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