Blunt Rod: The King of Grounding
Thorough investigation performed by the University of Florida has debunked the effectiveness of nonconventional Early Streamer Emission (ESE) or Lightning Dissipation Array (LDA) approaches for lightning dissipation. The comprehensive testing proves there are no actual advantages to using ESE or LDA systems over the conventional Blunt End Franklin Rod approach.
Blunt Rod use is recognized as the only proven means of avoiding lightning damage by the NFPA 780 and IEC 62305 peer-reviewed lightning standards. Both the NFPA and IEC adhere to Blunt Rod practices for fire safety guidelines and offer no mention or reference to nonconventional ESE or LDA approaches.
In 1752, Franklin developed the Blunt rod technology and this method remains the only proven approach for fire safety due to lightning. This method works by providing a step leader jump off point, establishing the discharge path through the rod and down conductors into the Earth, where the charge is dissipated safely.
In recurrent testing during a period of seven years, Blunt Rod and LDA systems were evaluated. The findings reported show the Blunt tip rods as having an overwhelming strike occurrence rate at circumventing the lightning test discharge, allowing it to dissipate safely. In contrast, the LDA was incapable of efficiently circumventing the lightning strike.
In conclusion, the Blunt end Franklin rod remains the safest and most effective means of protecting structures from the risk of fire and damage due to lightning!!
Learn more in our white paper: Blunt Rod Whitepaper