On Wed, 25 Jun 2008 22:10:07 -1000, Lee Wical wrote:
>Any comments on the UFER grounding system? Pros and cons?
1) It's simply another kind of ground electrode, and an excellent
way to get a low impedance connection to earth. In general, a Ufer
can provide a much lower impedance to earth than a typical ground
rod.
2) It should be designed and installed in such a manner that when a
lightning strike occurs, heating does not cause a structural
failure. In other words, be VERY careful when using structural
concrete as a Ufer ground.
To understand how a Ufer ground works, see a tutorial I wrote for
pro audio folks.
http://audiosystemsgroup.com/SurgeXPowerGround.pdf
73,
Jim Brown K9YC
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