[IRCA] was: Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Charles A Taylor
At 10:30 PM 7/13/2007 -0700, you wrote: Charles: You might want to do a Google for three point method and fall of potential. These are the two standard methods for measuring grounding resistance. You should easily find tutorials from manufacturers of testing equipment. EWE's are at or near the

Re: [IRCA] was: Measuring D-C resistance of ground rods to earth

2007-07-14 Thread Chuck Hutton
CAT: You can use the methods I mentioned regardless of frequency (60 Hz, MW, etc). It's up to you to provide the proper generator. I use this: http://www.beecavewoods.com/testequipment/sinewave.html . I like it because it's simple, parts are readily accessible, and best of all it puts out enough