The FT6380 and FT6381 Clamp On Earth Tester make grounding resistance measurements simply by being clamped to multiple- grounded ground wires. No auxiliary grounding rod is needed, and there is no need to disconnect the ground wire from the grounding rod.
The instruments also provide AC current measurement functionality and can measure currents ranging from leakage current on the order of several mA to load currents of up to 60 A.
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