On Nov 16, 5:58*am, Meat Plow wrote:
On Sun, 15 Nov 2009 22:17:57 -0500, Tony Sivori
wrote:

PeterD wrote:

wrote:
So it seems to be a case of it has to work, but it doesn't work. Any
suggestions are welcome.

You may have high resistance soil, and need more than one ground rod.
Code typically calls for three, wired together.

I think you are probably right.

A quick Google shows that multiple ground rods are often necessary.
Although I found the NEC calls for multiple rods only when a single rod
installation exceeds it says 25 ohms. And it seems that every other
possible reason has been eliminated.

And good luck trying to clean up the generator output if you intend on
using a UPS in the circuit. My generator is 2500/3250 surge like
yours. And it is brushless. But there was nothing I could do to filter
the output well enough where my two 1000va APC UPS units would come
back off battery. Both are used in my A/V gear after a about with
nuisance outages of short duration but short enough to need to reset a
lot of things. Also I had two 9 foot copper ground rods, one on either
side of the house connected inside to my ham radio stuff. When hooked
to an APC multi outlet filter with a wiring fault indicator, the
indicator did not light while on generator power. So I guess in my
case the two rods were enough. And they sure reduced my noise level on
the HF bands, the main reason for their installation.

If clean power is a requirement, can't you add inside your
'distribution panel' a couple of multistage EMI filters? Then, for
the 2kHz to 150kHz band, do your own?

Sequence is GEN, EMI Filter, EMI Filter, Custom Filter, your stuff
of course, put the breakers and over voltage in there in the
appropriate place.

EMI filters have Y caps, so...