Yes, interesting subject. I did a different approach with the new house. The main drain line for the roof water had to be in a trench and because of the elevation, it had to be DEEP so when the drain lines were put in I included two separate #4 copper lines. Total feet 200+. All station grounds are with copper strap from a common point in the basement to the operating position. Up 10 feet. All else is locally grounded with rods as necessary. I only point this out for those who are building a new home. THINK RADIO. Cheers, Mel K6KBE
--- On Mon, 9/10/12, VE3GNO Daniel <[email protected]> wrote: From: VE3GNO Daniel <[email protected]> Subject: Re: [Elecraft] Ground Rods To: "Gary Gregory" <[email protected]>, "Elecraft" <[email protected]> Date: Monday, September 10, 2012, 4:18 PM Hi Gary, Interesting discussion. Depends on what type of soil, but as a general rule for lightning is much better with multiple rods deep into dirt (9ft +) with spacing distance between rods equal or bigger than the rod length. I've seen grounding installed close around a concrete structure cracking the concrete base on a direct hit. Many hams are literally pushing a 3ft rod into dirt, inefficient, my opinion is to prepare the grounding before and salt it periodically. Here is a good document, is a must to be read for the ones with lightning activity. http://members.rennlist.org/warren/ground.pdf vy73 de VE3GNO Daniel ________________________________ From: Gary Gregory <[email protected]> To: Elecraft <[email protected]> Sent: Monday, September 10, 2012 6:30:52 PM Subject: [Elecraft] Ground Rods *Interesting discussion locally here in VK. Is there any advantage in having the Copper ground rod surrounded by concrete over having the rod driven 6 feet straight into the earth? Hope this doesn't get too far off topic or develop into a prolonged discussion but I realised I didn't know the answer if there is one. 73 * -- *Gary* *Start the day off slow, then taper off.........* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
