This article was posted 03/22/2006 and is most likely outdated.

The Use of Concrete-Enclosed Reinforcing Rods as Grounding Electrodes
 

 
Topic - Grounding and Bonding
Subject - The Use of Concrete-Enclosed Reinforcing Rods as Grounding Electrodes

March 22, 2006  

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The Use of Concrete-Enclosed Reinforcing Rods as Grounding Electrodes

 

The findings of Ufer that metal encased in concrete performs as an effective grounding electrode constitutes a major breakthrough in grounding technology. This has been recognized to the extent that copper wire embedded in the concrete footings of a structure is now an acceptable alternate to driven rods or pipe electrodes in the soil. This comes as a welcome relief from the condition of ineffective grounding by the use of water pipes due to insulated material or couplings and the antagonism of the proprietors of the water pipes.

 

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Comments
  • Your March 22nd. Topic-Grounding & Bonding raised an interesting question with me. Where does the word Ufer come from? I looked in my 1970 copy of the American Electricians Handbook and the 1999 version of the NEC and I can find no reference to the word Ufer. Can you explain the origination of the Ufer grounding system?

    Harald Loer
  • Reply from: ben jacks   
    "Coined namesake in honor of Herbert G. Ufer", engineer-inventor contracted by U.S. military during WWII for ammo bunker lightning strike protection. Google 'UFER' for a few good source references. (above quote taken from RESIDENTIAL NM WIRING with Grounding and Bonding...2005) Seen in THE ELECTRIC SHOP on JLC construction forum.


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