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Re: [IRCA] [NRC-AM] Ground Resistance
> In conclusion I would always recommend a 10 foot rod for a good
> ground (around 10 ohms in black dirt/clay, moist soils, higher
> in dry, sandy, rocky soils).
I made a tool to drive in ground rods. It's two parts. First is a 3 foot
length of 1.5" pipe. The second is an axle from a 1 ton truck that fits
nicely into the pipe. Once the ground rod is at a point where it's
difficult to hammer down, I slide the pipe about a foot over the rod. Then
I slide the axle down the pipe as hard as possible. What it does is act
like a guided 16 pound sledge hammer. The pipe keeps the axle from sliding
off. I've driven in a dozen or more rods with it. I think I've even broken
some deeply buried rocks or forced them aside. It really works well.
Craig Healy
Providence, RI
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