Lightning Protection FAQ
Below are some of the most common questions and answers regarding lightning strikes and lightning protection.
cable to the ground. The National Fire Protection Association (NFPA) has maintained a strict standard for the installation of lightning rods for more than 100 years.
lighting bolt. Since these features are everywhere in our environment, we all need to understand the potential danger of lightning.
Thunder travels at the speed of sound, which is relatively much slower at ~760 miles per hour. So you can quickly figure how far you are from the lightning flash by timing the pause between seeing the flash and hearing the thunder. When you see the flash, begin counting the seconds. Every five seconds equals ~1 mile in distance. So if you count 10 seconds between seeing the flash and hearing the thunder, you are about 2 miles away from the strike.