The NEC does not require the GES to be less than 25 ohms to ground.
250.56 Resistance of Rod, Pipe, and Plate Electrodes.
A single electrode consisting of a rod, pipe, or plate that does not have a resistance to ground of 25 ohms or less shall be augmented by one additional electrode of any of the types specified by 250.52(A)(2) through (A)(7). Where multiple rod, pipe, or plate electrodes are installed to meet the requirements of this section, they shall not be less than 1.8 m (6 ft) apart.
All this says is if you have only one electrode of rod, pipe or plate that it must either have less than 25 ohms of resistance to ground or be aided by other electrodes.
Once you have two electrodes there is no resistance requirement.
If you put in two rods and the resistance to ground is 50, 100, or 200 ohms the NEC is satisfied.
[This message has been edited by iwire (edited 01-12-2006).]
