Hi Dave; I bought an Amprobe DGC 1000 for around $1100. It takes seconds to get a reading, without taking any connections loose or shutting off power. There are much cheaper units (3 point fall of potential type) to be had for under $500. They take more time, but also would be better for off grid measurements.
R. Walters On Sep 14, 2010, at 8:04 PM, Dave Palumbo wrote: > What Ray Walters said was the truth. Resistance to ground should be very low. > How many dollars is that tester you use Ray? We don’t own one. On the wish > list.
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